AudioVideo Systems - Electrical Diagnostics - Liberty

DIAGNOSTIC CODE INDEX

DTC                                                                 Description
B1401                          FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW
B1402                         FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B1403                         FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1405                        FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW
B1406                       FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B1407                       FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1409                            REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW
B140A                           REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B140B                           REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B140D                         REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW
B140E                         REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B140F                        REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1420                             AUDIO CASSETTE ERROR/INOPERABLE CASSETTE
B1421                                   AUDIO CD READ ERROR/INOPERABLE DISC
B1422                                 AUDIO DVD READ ERROR/INOPERABLE DISC
B1423                                    VES DVD READ ERROR/INOPERABLE DISC
B1424                                            IMPROPER DVD-WRONG REGION
B1429                                       RADIO DISPLAY HIGH TEMPERATURE
B142A                                           RADIO UNIT HIGH TEMPERATURE
B142C                                         VES VIDEO SCREEN DISCONNECTED
B142D                                         AUDIO ANTENNA NOT CONNECTED
B142E                                            GPS ANTENNA NOT CONNECTED
B142F                               SATELLITE RADIO ANTENNA NOT CONNECTED
B1460                CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE
B1461                           CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOW
B1462                          CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B1463                          CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1464            CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
B1465                CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE
B1466                           CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT LOW
B1467                          CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B1468                          CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1469            CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
B146A                CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

B146B                             CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW
B146C                             CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B146D                            CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B146E                CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
B146F                    CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE
B1470                             CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW
B1471                             CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B1472                            CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1473                CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
B1474                    CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE
B1475                             CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW
B1476                             CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B1477                            CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B1478                CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
B1479                    CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE
B147A                             CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW
B147B                             CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH
B147C                            CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B147D                CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER
B2222                                       SATELLITE RADIO RECEIVER INTERNAL
U0019                                            CAN INTERIOR BUS(+)/(-) CIRCUIT
U0020                                       CAN INTERIOR BUS OFF PERFORMANCE
U0151               LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER
U0154               LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE
U0184                                         LOST COMMUNICATION WITH RADIO
U0186                                LOST COMMUNICATION WITH AUDIO AMPLIFIER
U0195                                          LOST COMMUNICATION WITH SDAR
U0197                            LOST COMMUNICATION WITH HANDS FREE MODULE
U0199                          LOST COMMUNICATION WITH DRIVERS DOOR MODULE
U0200                       LOST COMMUNICATION WITH PASSENGER DOOR MODULE

AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSTICS

B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is LOW for more than three seconds.

Possible causes

(X201) LEFT FRONT SPEAKERS (+) CIRCUIT SHORTED TO GROUND
(X291) LEFT FRONT SPEAKERS (-) CIRCUIT SHORTED TO GROUND
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X201) LEFT FRONT SPEAKERS (+) CIRCUIT SHORTED TO GROUND

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Front Left Audio Speaker harness connector.

Measure the resistance between ground and the (X201) Left Front Speakers (+) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X201) Left Front Speakers (+) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X291) LEFT FRONT SPEAKERS (-) CIRCUIT SHORTED TO GROUND

Measure the resistance between ground and the (X291) Left Front Speakers (-) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X291) Left Front Speakers (-) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4. 4. SPEAKER

Connect the Radio harness connector.

With the Front Left Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Replace the Front Left Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible causes

(X201) LEFT FRONT SPEAKERS (+) CIRCUIT SHORTED TO VOLTAGE
(X291) LEFT FRONT SPEAKERS (-) CIRCUIT SHORTED TO VOLTAGE
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Radio DTCs.

Does the scan tool display active: B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Left Front Audio Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X201) Left Front Speakers (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X201) Left Front Speakers (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X291) LEFT FRONT SPEAKERS (-) CIRCUIT SHORTED TO VOLTAGE

Measure for voltage on the (X291) Left Front Speakers (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X291) Left Front Speakers (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the Radio in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Possible causes

(X201) LEFT FRONT SPEAKERS (+) CIRCUIT OPEN
(X291) LEFT FRONT SPEAKERS (-) CIRCUIT OPEN
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken

wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X201) LEFT FRONT SPEAKERS (+) CIRCUIT OPEN

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Front Left Audio Speaker harness connector.

Measure the resistance of the (X201) Left Front Speakers (+) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 3.

Repair the (X201) Left Front Speakers (+) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 3. (X291) LEFT FRONT SPEAKERS (-) CIRCUIT OPEN

Measure the resistance of the (X291) Left Front Speakers (-) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 4.

Repair the (X291) Left Front Speakers (-) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 4. SPEAKER

Connect the Radio harness connector.

With the Front Left Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Replace the Front Left Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is LOW for more than three seconds.

Possible causes

(X202) RIGHT FRONT SPEAKERS (+) CIRCUIT SHORTED TO GROUND
(X292) RIGHT FRONT SPEAKERS (-) CIRCUIT SHORTED TO GROUND
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X202) RIGHT FRONT SPEAKERS (+) CIRCUIT SHORTED TO GROUND

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Front Right Audio Speaker harness connector.

Measure the resistance between ground and the (X202) Right Front Speakers (+) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X202) Right Front Speakers (+) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X292) RIGHT FRONT SPEAKERS (-) CIRCUIT SHORTED TO GROUND

Measure the resistance between ground and the (X292) Right Front Speakers (-) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X292) Right Front Speakers (-) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4. 4. SPEAKER

Connect the Radio harness connector.

With the Front Right Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Replace the Front Right Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B1406-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible causes

(X202) RIGHT FRONT SPEAKERS (+) CIRCUIT SHORTED TO VOLTAGE
(X292) RIGHT FRONT SPEAKERS (-) CIRCUIT SHORTED TO VOLTAGE
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Radio DTCs.

Does the scan tool display active: B1406-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X202) RIGHT FRONT SPEAKERS (+) CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Right Front Audio Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X202) Right Front Speakers (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X202) Right Front Speakers (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X292) RIGHT FRONT SPEAKERS (-) CIRCUIT SHORTED TO VOLTAGE

Measure for voltage on the (X292) Right Front Speakers (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X292) Right Front Speakers (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the Radio in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Possible causes

(X202) RIGHT FRONT SPEAKERS (+) CIRCUIT OPEN
(X292) RIGHT FRONT SPEAKERS (-) CIRCUIT OPEN
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Front Right Audio Speaker harness connector.

Measure the resistance of the (X202) Right Front Speakers (+) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 3.

Repair the (X202) Right Front Speakers (+) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 3. (X292) RIGHT FRONT SPEAKERS (-) CIRCUIT OPEN

Measure the resistance of the (X292) Right Front Speakers (-) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 4.

Repair the (X292) Right Front Speakers (-) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 4. SPEAKER

Connect the Radio harness connector.

With the Front Right Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Replace the Front Right Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is LOW for more than three seconds.

Possible causes

(X205) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X295) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Rear Left Audio Speaker harness connector.

Measure the resistance between ground and the (X205) Left Rear Speaker (+) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X205) Left Rear Speaker (+) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X295) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND

Measure the resistance between ground and the (X295) Left Rear Speaker (-) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X295) Left Rear Speaker (-) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4. 4. SPEAKER

Connect the Radio harness connector.

With the Rear Left Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Replace the Rear Left Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible causes

(X205) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X295) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Radio DTCs.

Does the scan tool display active: B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X205) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Left Rear Audio Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X205) Left Rear Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X205) Left Rear Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X295) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE

Measure for voltage on the (X295) Left Rear Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X295) Left Rear Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the Radio in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Possible causes

(X205) LEFT REAR SPEAKER (+) CIRCUIT OPEN
(X295) LEFT REAR SPEAKER (-) CIRCUIT OPEN
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Rear Left Audio Speaker harness connector.

Measure the resistance of the (X205) Left Rear Speaker (+) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 3.

Repair the (X205) Left Rear Speaker (+) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 3. (X295) LEFT REAR SPEAKER (-) CIRCUIT OPEN

Measure the resistance of the (X295) Left Rear Speaker (-) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 4.

Repair the (X295) Left Rear Speaker (-) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 4. SPEAKER

Connect the Radio harness connector.

With the Rear Left Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Replace the Rear Left Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is LOW for more than three seconds.

Possible causes

(X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X296) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Rear Right Audio Speaker harness connector.

Measure the resistance between ground and the (X206) Right Rear Speaker (+) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X206) Right Rear Speaker (+) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X296) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND

Measure the resistance between ground and the (X296) Right Rear Speaker (-) circuit.

Is the resistance below 1000.0 ohms?

Yes

Repair the (X296) Right Rear Speaker (-) circuit for a short to ground condition. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4. 4. SPEAKER

Connect the Radio harness connector.

With the Rear Right Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Replace the Rear Right Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible causes

(X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X296) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Radio DTCs.

Does the scan tool display active: B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. (X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Right Rear Audio Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X206) Right Rear Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X206) Right Rear Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. (X296) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE

Measure for voltage on the (X296) Right Rear Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X296) Right Rear Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the Radio in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the radio on.

Set conditions

 Set Condition:  When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Possible causes

(X206) RIGHT REAR SPEAKER (+) CIRCUIT OPEN
(X296) RIGHT REAR SPEAKER (-) CIRCUIT OPEN
SPEAKER

1. INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, clear all Radio DTC's.

Turn the Radio on.

With the scan tool, read the DTC information.

Does the scan tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken

Turn the ignition off.

Disconnect the Radio harness connector.

Disconnect the Rear Right Audio Speaker harness connector.

Measure the resistance of the (X206) Right Rear Speaker (+) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 3.

Repair the (X206) Right Rear Speaker (+) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 3. (X296) RIGHT REAR SPEAKER (-) CIRCUIT OPEN

Measure the resistance of the (X296) Right Rear Speaker (-) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 4.

Repair the (X296) Right Rear Speaker (-) circuit for an open condition. Perform BODY VERIFICATION TEST - VER 1 . 4. SPEAKER

Connect the Radio harness connector.

With the Rear Right Audio Speaker still disconnected, turn the ignition on.

Turn the Radio on.

With the scan tool, clear all Radio DTC's.

With the scan tool, read the DTC information.

Does the scan tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Replace the Rear Right Audio Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Test Complete.

B1420-AUDIO CASSETTE ERROR/INOPERABLE CASSETTE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition on and the Radio Cassette player turned on.

Set conditions

 Set Condition:

The code will set when a damaged Cassette is placed in the Cassette Player.

Possible causes

CASSETTE READ FAILURE

Diagnostic test

RADIO

Replace the problem Cassette with a good, clean, undamaged, cassette. Turn the Radio cassette player on. With the scan tool, read DTC's. Does the scan tool display active: B1420-AUDIO CASSETTE ERROR/INOPERABLE CASSETTE?

Yes Eject the inoperative cassette and replace the Radio/Cassette Player in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B1421-AUDIO CD READ ERROR/INOPERABLE DISC

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition on and the radio CD player turned on.

Set conditions

 Set Condition:  The code will set if a CD that is not formatted as a music CD is installed in the radio CD player.

Possible causes

CD READ FAILURE

Diagnostic test

RADIO

Replace the problem CD with a good, clean, unscratched, music CD. Turn the radio CD player on. With the scan tool, read DTC's. Does the scan tool display: B1421 AUDIO CD READ ERROR/INOPERABLE DISC?

Yes Eject the inoperative CD and replace the CD in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B1422-AUDIO DVD READ ERROR/INOPERABLE DISC

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition on and the DVD player turned on.

Set conditions

 Set Condition:

The code will set if a DVD that is not formatted as a DVD is installed in the DVD player.

Possible causes

DVD READ FAILURE

Diagnostic test

DVD PLAYER

Replace the problem DVD with a good, clean, unscratched DVD. Turn the DVD player on. With the scan tool, read DTC's. Does the scan tool display active: B1422-AUDIO DVD READ ERROR/INOPERABLE DISC?

Yes Eject the inoperative DVD and replace the DVD in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B1423-VES DVD READ ERROR/INOPERABLE DISC

⚡ Wiring diagram: Body Control Modules Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition on and the DVD player turned on.

Set conditions

 Set Condition:

The code will set if a DVD that is not formatted as a DVD is installed in the DVD player.

Possible causes

DVD READ FAILURE

Diagnostic test

DVD PLAYER

Replace the problem DVD with a good, clean, unscratched DVD. Turn the DVD player on. With the scan tool, read DTC's. Does the scan tool display active: B1423-VES DVD READ ERROR/INOPERABLE DISC?

Yes Eject the inoperative DVD and replace the DVD in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B1424-IMPROPER DVD-WRONG REGION

⚡ Wiring diagram: Body Control Modules Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition on and the DVD player turned on.

Set conditions

 Set Condition:

The code will set if a DVD that is not formatted as a DVD is installed in the DVD player.

Possible causes

DVD READ FAILURE

Diagnostic test

DVD PLAYER

Replace the problem DVD with a good, clean, unscratched DVD. Turn the DVD player on. With the scan tool, read DTC's. Does the scan tool display active: B1424-IMPROPER DVD-WRONG REGION?

Yes Eject the inoperative DVD and replace the DVD in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B1429-RADIO DISPLAY HIGH TEMPERATURE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition and Radio on.

Set conditions

 Set Condition:

The code will set if the temperature inside the Radio is above +65°C ( +145°F )

Possible causes

HIGH TEMPERATURE FAILURE

Diagnostic test

VERIFY THAT DTC B1429-RADIO DISPLAY HIGH TEMPERATURE IS ACTIVE.

With the scan tool, clear all DTC's. Start the engine and allow the engine to reach normal operating temperature. If the vehicle has been in the hot sunlight or extreme cold, move the vehicle indoors and open the doors to allow the inside temperature to stabilize. The Radio should operate between -23°C and +65°C ( -10°F and +145°F ). With the scan tool, read DTC's. Does the scan tool display active: B1429-RADIO DISPLAY HIGH TEMPERATURE?

Yes Replace the Radio in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B142A-RADIO UNIT HIGH TEMPERATURE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the ignition and Radio on.

Set conditions

 Set Condition:

The code will set if the temperature inside the Radio is above +65°C ( +145°F )

Possible causes

HIGH TEMPERATURE FAILURE

Diagnostic test

VERIFY THAT DTC B142A-RADIO UNIT HIGH TEMPERATURE IS ACTIVE.

With the scan tool, erase the DTC's. Start the engine and allow the engine to reach normal operating temperature. If the vehicle has been in the hot sunlight or extreme cold, move the vehicle indoors and open the doors to allow the inside temperature to stabilize. The Radio should operate between -23°C and +65°C ( -10°F and +145°F ). With the scan tool, read DTC's. Does the scan tool display active: B142A-RADIO UNIT HIGH TEMPERATURE?

Yes Replace the Radio in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B142C-VES VIDEO SCREEN DISCONNECTED

⚡ Wiring diagram: Body Control Modules Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on and the Radio in Video mode.

Set conditions

 Set Condition:

With the Radio in Video mode, the Radio does not detect a VES Video Screen.

Possible causes

BAD VES VIDEO SCREEN CONNECTION
RADIO

Diagnostic test

TEST VES VIDEO SCREEN CONNECTION

Turn the ignition off. Disconnect the VES Video Screen connector. Inspect the VES Video Screen connection. Was the VES Video Screen connection clean and secure?

Yes Go To 2.

No Repair the VES Video Screen connection as needed. Perform BODY VERIFICATION TEST - VER 1 .

VES VIDEO SCREEN

Refer to the Audio System in the Service Information and test the VES Video Screen in accordance with the Service Procedure. Is the Antenna ok?

Yes Go To 3.

No Repair or replace the VES Video Screen in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

RADIO

NOTE

Reconnect all previously disconnected components.

NOTE

Move vehicle outside approximately 30ft (9.14m) from any structure.

Turn the ignition on. Turn the Radio on. With the scan tool, clear all DTC's, put the Radio in mode. With the scan tool, read DTC's. Does the scan tool display active: B142C-VES VIDEO SCREEN DISCONNECTED?

Yes Replace the Radio in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B142D-AUDIO ANTENNA NOT CONNECTED

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on and the Radio in seek mode.

Set conditions

 Set Condition:

With the Radio in seek mode for two loops around the band. The Radio does not detect an Antenna connection or does not receive a Radio station signal.

Possible causes

BAD ANTENNA CONNECTION
RADIO

Diagnostic test

TEST ANTENNA

Turn the ignition off. Disconnect the Radio Antenna connector. Inspect the Radio Antenna connection. Was the Antenna connection clean and secure?

Yes Go To 2.

No Repair the Antenna connection as needed. Perform BODY VERIFICATION TEST - VER 1 .

ANTENNA

Refer to the Audio System in the Service Information and test the antenna in accordance with the Service Procedure. Is the Antenna ok?

Yes Go To 3.

No Repair or replace the Antenna assembly in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

RADIO

NOTE

Reconnect all previously disconnected components.

NOTE

Move vehicle outside approximately 30ft (9.14m) from any structure.

Turn the ignition on. Turn the Radio on. With the scan tool, clear all DTC's, put the Radio in seek up and down mode for 2 loops around the band cycle before proceeding. With the scan tool, read DTC's. Does the scan tool display active: B142D-AUDIO ANTENNA NOT CONNECTED?

Yes Replace the Radio in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B142E-GPS ANTENNA NOT CONNECTED

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on and the Radio in Navigation mode.

Set conditions

 Set Condition:

With the Radio in Navigation mode. The Radio does not detect an Antenna connection or does not receive a Navigation (GPS) signal.

Possible causes

BAD ANTENNA CONNECTION
RADIO
ANTENNA

Diagnostic test

TEST ANTENNA

Turn the ignition off. Disconnect the GPS Antenna connector. Inspect the GPS Antenna connection. Was the Antenna connection clean and secure?

Yes Go To 2.

No Repair the Antenna connection as needed. Perform BODY VERIFICATION TEST - VER 1 .

ANTENNA

Refer to the Audio System in the Service Information and test the antenna in accordance with the Service Procedure. Is the Antenna ok?

Yes Go To 3.

No Repair or replace the Antenna assembly in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

RADIO

NOTE

Reconnect all previously disconnected components.

NOTE

Move vehicle outside approximately 30ft (9.14m) from any structure.

Turn the ignition and Radio on. With the scan tool, clear all DTC's and operate the Navigation system. With the scan tool, read DTC's. Does the scan tool display active: B142E-GPS ANTENNA NOT CONNECTED?

Yes Replace the Radio in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B142F-SATELLITE RADIO ANTENNA NOT CONNECTED

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on and the Satellite Radio in seek mode.

Set conditions

 Set Condition:  With the radio in seek mode for two loops around the band. The radio does not detect an antenna

connection or does not receive a radio satellite signal.

Possible causes

BAD ANTENNA CONNECTION
SATELLITE RADIO RECEIVER

Diagnostic test

TEST ANTENNA

Turn the ignition off. Disconnect the Satellite Radio Antenna connector. Inspect the Satellite Radio Antenna connection. Was the Antenna connection clean and secure?

Yes Go To 2.

No Repair the Antenna connection as needed. Perform BODY VERIFICATION TEST - VER 1 .

SATELLITE RADIO ANTENNA

Refer to the Audio System in the service information and test the antenna in accordance with the service procedure. Is the Antenna ok?

Yes Go To 3.

No Repair or replace the Antenna assembly as necessary. Perform BODY VERIFICATION TEST - VER 1 .

SATELLITE RADIO RECEIVER

NOTE

Reconnect all previously disconnected components.

NOTE

Move vehicle outside approximately 30ft (9.144m) from any structure.

Turn the ignition and radio on. With the scan tool, erase the audio DTC's, put the satellite radio in seek up and down mode for 2 loops around the band cycle before proceeding. With the scan tool, read the audio DTC's. Did this DTC reset?

Yes Replace the Satellite Radio Receiver in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

No Test Complete.

B1430 SATELLITE RADIO ANTENNA INTERNAL PERFORMANCE

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The Satellite Radio Antenna detects a software checksum test failure.

Possible causes

SATELLITE RADIO ANTENNA

Diagnostic test

REPLACE THE SATELLITE RADIO ANTENNA

When this code is set, the Satellite Radio Antenna must be replaced. Repair Replace the Satellite Radio Antenna in accordance with the Service Information. Refer to STANDARD PROCEDURE . Refer to STANDARD PROCEDURE .

B1460-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

Possible causes

AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1460-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

Perform BODY VERIFICATION TEST - VER 1 .

B1461-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a shorted to ground condition on the speaker output circuit.

Possible causes

(X201) AMPLIFIED LEFT FRONT I/P SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X291) AMPLIFIED LEFT FRONT I/P SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT FRONT I/P SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1461-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

2. CHECK THE (X201) AMPLIFIED LEFT FRONT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Circuit

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Left I/P Speaker harness connector.

Measure the resistance between ground and the (X201) Amplified Left Front I/P Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X201) Amplified Left Front I/P Speaker (+) circuit for a short to ground.

Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X291) AMPLIFIED LEFT FRONT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between ground and the (X291) Amplified Left Front I/P Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X291) Amplified Left Front I/P Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4. 4. CHECK OPERATION OF THE AMPLIFIED LEFT FRONT I/P SPEAKER

Ground

Reconnect and reinstall the Left Front I/P Speaker.

Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground.

Is the resistance below 10K ohms?

Yes

Replace the Left Front I/P Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Replace the Amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B1462-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 2

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a short to battery condition on the output circuit.

Possible causes

(X201) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X291) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1462-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FOR VOLTAGE ON THE (X201) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Amplified Left I/P Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X201) Amplified Left I/P Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X201) Amplified Left I/P Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK FOR VOLTAGE ON THE (X291) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT

Measure for voltage on the (X291) Amplified Left I/P Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X291) Amplified Left I/P Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1463-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Amplifier BUS wake-up. Amplifier reset with scan tool.

Set conditions

 Set Condition:  The amplifier detects an open condition on the speaker output circuit.

Possible causes

(X201) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT OPEN
(X291) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT OPEN
LEFT FRONT I/P SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 3

Turn the ignition on.

Turn the radio on.

With the scan tool, erase Amplifier DTCs.

With the scan tool, reset the amplifier.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1463-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

Harness Connector

Turn the ignition off.

Disconnect the Left I/P Speaker harness connector.

Turn the ignition on.

Turn the radio on and turn the volume to mid level.

With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left I/P Speaker circuits in the Amplified Left I/P Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

Replace the Amplified Left I/P Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X201) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT FOR AN OPEN

C2 Harness Connector And Amplified Left I/P Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Measure the resistance of the (X201) Amplified Left I/P Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Left I/P Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 4.

Repair the (X201) Amplified Left I/P Speaker (+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (X291) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT FOR AN OPEN

C2 Harness Connector And Amplified Left I/P Speaker Harness Connector

Measure the resistance of the (X291) amplified Left I/P Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Left I/P Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the Amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

Repair the (X291) Amplified Left I/P Speaker (-) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B1464-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on. Radio volume at 25 or higher.

Set conditions

 Set Condition:  The amplifier detects that the output circuits are shorted together.

Possible causes

(X201) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT SHORTED TO THE (X291) AMPLIFIED
LEFT I/P SPEAKER (-) CIRCUIT
AMPLIFIED LEFT I/P SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, erase Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1464-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

Yes

Go To 2.

2. CHECK THE OPERATION OF THE AMPLIFIED LEFT I/P SPEAKER

Turn the ignition off.

Disconnect the Amplified Left I/P Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Left I/P Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X201) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT, AND THE (X291) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

Amplified Left I/P Speaker (-) Circuit

Disconnect the Amplifier C2 harness connector.

Measure the resistance between the (X201) Amplified Left I/P Speaker (+) circuit, and the (X291) Amplified Left I/P Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X201) Amplified Left I/P Speaker (+) circuit, and the (X291) Amplified Left I/P Speaker (-) circuit for a short together. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1465-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

Possible causes

AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION

Turn the ignition on, then off, and then on again.

With the scan tool, read amplifier DTCs.

Does the scan tool display active: B1465-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST - VER 1 .

B1466-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a shorted to ground condition on the speaker output circuit.

Possible causes

(X202) AMPLIFIED RIGHT FRONT I/P SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X292) AMPLIFIED RIGHT FRONT I/P SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT FRONT I/P SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1466-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE (X202) AMPLIFIED RIGHT FRONT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Circuit

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Right Front I/P Speaker harness connector.

Measure the resistance between ground and the (X202) Amplified Right Front I/P Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X202) Amplified Right Front I/P Speaker (+) circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X292) AMPLIFIED RIGHT FRONT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Circuit

Measure the resistance between ground and the (X292) Amplified Right Front I/P Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X292) Amplified Right Front I/P Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4.

4. CHECK OPERATION OF THE AMPLIFIED RIGHT FRONT I/P SPEAKER

Ground

Reconnect and reinstall the Right Front I/P Speaker.

Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground.

Is the resistance below 10K ohms?

Yes

Replace the Right Front I/P Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B1467-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 2

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a short to battery condition on the output circuit.

Possible causes

(X202) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X292) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1467-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FOR VOLTAGE ON THE (X202) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Amplified Right I/P Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X202) Amplified Right I/P Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X202) Amplified Right I/P Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK FOR VOLTAGE ON THE (X292) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT

Measure for voltage on the (X292) Amplified Right I/P Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X292) Amplified Right I/P Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B1468-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Amplifier BUS wake-up. Amplifier reset with scan tool.

Set conditions

 Set Condition:  The amplifier detects an open condition on the speaker output circuit.

Possible causes

(X202) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT OPEN
(X292) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT OPEN
RIGHT I/P SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 3

Turn the ignition on.

Turn the radio on.

With the scan tool, erase Amplifier DTCs.

With the scan tool, reset the amplifier.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1468-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

2. CHECK THE OPERATION OF THE RIGHT FRONT I/P SPEAKER

Speaker Harness Connector

Turn the ignition off.

Disconnect the Right I/P Speaker harness connector.

Turn the ignition on.

Turn the radio on and turn the volume to mid level.

With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Right I/P Speaker circuits in the Amplified Right I/P Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

Replace the Amplified Right I/P Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X202) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT FOR AN OPEN

Amplifier C2 Harness Connector And Amplified Right I/P Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Measure the resistance of the (X202) Amplified Right I/P Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Right I/P Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 4.

Repair the (X202) Amplified Right I/P Speaker (+) circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (X292) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT FOR AN OPEN

Amplifier C2 Harness Connector And Amplified Right I/P Speaker Harness Connector

Measure the resistance of the (X292) Amplified Right I/P Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Right I/P Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Repair the (X292) Amplified Right I/P Speaker (-) circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 .

B1469-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on. Radio volume at 25 or higher.

Set conditions

 Set Condition:  The amplifier detects that the output circuits are shorted together.

Possible causes

(X202) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT SHORTED TO THE (X292) AMPLIFIED
RIGHT I/P SPEAKER (-) CIRCUIT
AMPLIFIED RIGHT I/P SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, erase Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1469-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT I/P SPEAKER

Turn the ignition off.

Disconnect the Amplified Right I/P Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Right I/P Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X202) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT, AND THE (X292) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

Amplified Right I/P Speaker (-) Circuit

Disconnect the Amplifier C2 harness connector.

Measure the resistance between the (X202) Amplified Right I/P Speaker (+) circuit, and the (X292) Amplified Right I/P Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X202) Amplified Right I/P Speaker (+) circuit, and the (X292) Amplified Right I/P Speaker (-) circuit for a short together. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B146A-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

Possible causes

AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B146A-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST - VER 1 .

B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a shorted to ground condition on the speaker output circuit.

Possible causes

(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT FRONT SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Circuit

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Left Front Speaker harness connector.

Measure the resistance between ground and the (X209) Amplified Left Front Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X209) Amplified Left Front Speaker (+) circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Circuit

Measure the resistance between ground and the (X299) Amplified Left Front Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X299) Amplified Left Front Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4.

4. CHECK OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER

Ground

Reconnect and reinstall the Left Front Speaker.

Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground.

Is the resistance below 10K ohms?

Yes

Replace the Left Front Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 2

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a short to battery condition on the output circuit.

Possible causes

(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FOR VOLTAGE ON THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Amplified Left Front Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X209) Amplified Left Front Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X209) Amplified Left Front Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK FOR VOLTAGE ON THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT

Measure for voltage on the (X299) Amplified Left Front Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X299) Amplified Left Front Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Amplifier BUS wake-up. Amplifier reset with scan tool.

Set conditions

 Set Condition:  The amplifier detects an open condition on the speaker output circuit.

Possible causes

(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT OPEN
(X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT OPEN
AMPLIFIED LEFT FRONT SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 3

Turn the ignition on.

Turn the radio on.

With the scan tool, erase Amplifier DTCs.

With the scan tool, reset the amplifier.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER

Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplified Left Front Speaker harness connector.

Turn the ignition on.

Turn the radio on and turn the volume to mid level.

With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left Front Speaker circuits in the Amplified Left Front Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

Replace the Amplified Left Front Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN

Amplifier C1 Harness Connector And Amplified Left Front Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Measure the resistance of the (X209) Amplified Left Front Speaker (+) circuit between the Amplifier C1 harness connector and the Amplified Left Front Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 4.

Repair the (X209) Amplified Left Front Speaker (+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN

Amplifier C1 Harness Connector And Amplified Left Front Speaker Harness Connector

Measure the resistance of the (X299) Amplified Left Front Speaker (-) circuit between the Amplifier C1 harness connector and the Amplified Left Front Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

Repair the (X299) Amplified Left Front Speaker (-) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on. Radio volume at 25 or higher.

Set conditions

 Set Condition:  The amplifier detects that the output circuits are shorted together.

Possible causes

(X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT SHORTED TO THE (X299)
AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUIT
AMPLIFIED LEFT FRONT SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, erase Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

Yes

Go To 2.

2. CHECK THE OPERATION OF THE AMPLIFIED LEFT FRONT SPEAKER

Turn the ignition off.

Disconnect the Amplified Left Front Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Left Front Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X209) AMPLIFIED LEFT FRONT SPEAKER (+) CIRCUIT, AND THE (X299) AMPLIFIED LEFT FRONT SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

(X299) Amplified Left Front Speaker (-) Circuit

Disconnect the Amplifier C1 harness connector.

Measure the resistance between the (X209) Amplified Left Front Speaker (+) circuit, and the (X299) Amplified Left Front Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X209) Amplified Left Front Speaker (+) circuit, and the (X299) Amplified Left Front Speaker (-) circuit for a short together. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B146F-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

Possible causes

AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION

Turn the ignition on, then off, and then on again.

With the scan tool, read amplifier DTCs.

Does the scan tool display active: B146F-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST - VER 1 .

B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a shorted to ground condition on the speaker output circuit.

Possible causes

(X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT FRONT SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE (X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Circuit

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Right Front Speaker harness connector.

Measure the resistance between ground and the (X208) Amplified Right Front Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X208) Amplified Right Front Speaker (+) circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Circuit

Measure the resistance between ground and the (X298) Amplified Right Front Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X298) Amplified Right Front Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4.

4. CHECK OPERATION OF THE AMPLIFIED RIGHT FRONT SPEAKER

Ground

Reconnect and reinstall the Right Front Speaker.

Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground.

Is the resistance below 10K ohms?

Yes

Replace the Right Front Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B1471-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 2

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a short to battery condition on the output circuit.

Possible causes

(X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1471-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FOR VOLTAGE ON THE (X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Amplified Right Front Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X208) Amplified Right Front Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X208) Amplified Right Front Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK FOR VOLTAGE ON THE (X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT

Measure for voltage on the (X298) Amplified Right Front Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X298) Amplified Right Front Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B1472-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Amplifier BUS wake-up. Amplifier reset with scan tool.

Set conditions

 Set Condition:  The amplifier detects an open condition on the speaker output circuit.

Possible causes

(X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT OPEN
(X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT OPEN
AMPLIFIED RIGHT FRONT SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 3

Turn the ignition on.

Turn the radio on.

With the scan tool, erase Amplifier DTCs.

With the scan tool, reset the amplifier.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1472-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT FRONT SPEAKER

Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplified Right Front Speaker harness connector.

Turn the ignition on.

Turn the radio on and turn the volume to mid level.

With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Right Front Speaker circuits in the Amplified Right Front Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

Replace the Amplified Right Front Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN

Amplifier C1 Harness Connector And Amplified Right Front Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Measure the resistance of the (X208) Amplified Right Front Speaker (+) circuit between the Amplifier C1 harness connector and the Amplified Right Front Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 4.

Repair the (X208) Amplified Right Front Speaker (+) circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN

Amplifier C1 Harness Connector And Amplified Right Front Speaker Harness Connector

Measure the resistance of the (X298) Amplified Right Front Speaker (-) circuit between the Amplifier C1 harness connector and the Amplified Right Front Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Repair the (X298) Amplified Right Front Speaker (-) circuit for an open.

Perform BODY VERIFICATION TEST - VER 1 .

B1473-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on. Radio volume at 25 or higher.

Set conditions

 Set Condition:  The amplifier detects that the output circuits are shorted together.

Possible causes

(X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT SHORTED TO THE (X298)
AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUIT
AMPLIFIED RIGHT FRONT SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, erase Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1473-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT FRONT SPEAKER

Turn the ignition off.

Disconnect the Amplified Right Front Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Right Front Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X208) AMPLIFIED RIGHT FRONT SPEAKER (+) CIRCUIT, AND THE (X298) AMPLIFIED RIGHT FRONT SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

(X298) Amplified Right Front Speaker (-) Circuit

Disconnect the Amplifier C1 harness connector.

Measure the resistance between the (X208) Amplified Right Front Speaker (+) circuit, and the (X298) Amplified Right Front Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X208) Amplified Right Front Speaker (+) circuit, and the (X298) Amplified Right Front Speaker (-) circuit for a short together. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1474-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

Possible causes

AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1474-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST - VER 1 .

B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a shorted to ground condition on the speaker output circuit.

Possible causes

(X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT REAR SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Left Rear Speaker harness connector.

Measure the resistance between ground and the (X205) Amplified Left Rear Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X205) Amplified Left Rear Speaker (+) circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between ground and the (X295) Amplified Left Rear Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X295) Amplified Left Rear Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4.

4. CHECK OPERATION OF THE AMPLIFIED LEFT REAR SPEAKER

Ground

Reconnect and reinstall the Left Rear Speaker.

Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground.

Is the resistance below 10K ohms?

Yes

Replace the Left Rear Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 2

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a short to battery condition on the output circuit.

Possible causes

(X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FOR VOLTAGE ON THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Amplified Left Rear Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X205) Amplified Left Rear Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X205) Amplified Left Rear Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK FOR VOLTAGE ON THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT

Measure for voltage on the (X295) Amplified Left Rear Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X295) Amplified Left Rear Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Amplifier BUS wake-up. Amplifier reset with scan tool.

Set conditions

 Set Condition:  The amplifier detects an open condition on the speaker output circuit.

Possible causes

(X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT OPEN
(X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT OPEN
LEFT REAR SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 3

Turn the ignition on.

Turn the radio on.

With the scan tool, erase Amplifier DTCs.

With the scan tool, reset the amplifier.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE OPERATION OF THE AMPLIFIED LEFT REAR SPEAKER

Speaker Harness Connector

Turn the ignition off.

Disconnect the Left Rear Speaker harness connector.

Turn the ignition on.

Turn the radio on and turn the volume to mid level.

With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left Rear Speaker circuits in the Amplified Left Rear Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

Replace the Amplified Left Rear Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN

Amplifier C2 Harness Connector And Amplified Left Rear Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Measure the resistance of the (X205) Amplified Left Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Left Rear Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 4.

Repair the (X205) Amplified Left Rear Speaker (+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN

Amplifier C2 Harness Connector And Amplified Left Rear Speaker Harness Connector

Measure the resistance of the (X295) Amplified Left Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Left Rear Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

Repair the (X295) Amplified Left Rear Speaker (-) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on. Radio volume at 25 or higher.

Set conditions

 Set Condition:  The amplifier detects that the output circuits are shorted together.

Possible causes

(X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO THE (X295) AMPLIFIED
LEFT REAR SPEAKER (-) CIRCUIT
AMPLIFIED LEFT REAR SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, erase Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

Yes

Go To 2.

2. CHECK THE OPERATION OF THE AMPLIFIED LEFT REAR SPEAKER

Turn the ignition off.

Disconnect the Amplified Left Rear Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Left Rear Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT, AND THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

Amplified Left Rear Speaker (-) Circuit

Disconnect the Amplifier C2 harness connector.

Measure the resistance between the (X205) Amplified Left Rear Speaker (+) circuit, and the (X295) Amplified Left Rear Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X205) Amplified Left Rear Speaker (+) circuit, and the (X295) Amplified Left Rear Speaker (-) circuit for a short together. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1479-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

Possible causes

AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B1479-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE?

Yes

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST - VER 1 .

B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a shorted to ground condition on the speaker output circuit.

Possible causes

(X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT REAR SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND

Circuit

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Right Rear Speaker harness connector.

Measure the resistance between ground and the (X206) Amplified Right Rear Speaker (+) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X206) Amplified Right Rear Speaker (+) circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND

Circuit

Measure the resistance between ground and the (X296) Amplified Right Rear Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X296) Amplified Right Rear Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

Go To 4.

4. CHECK OPERATION OF THE AMPLIFIED RIGHT REAR SPEAKER

Ground

Reconnect and reinstall the Right Rear Speaker.

Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground.

Is the resistance below 10K ohms?

Yes

Replace the Right Rear Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

B147B-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH📷 2

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The amplifier detects a short to battery condition on the output circuit.

Possible causes

(X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT SHORT TO VOLTAGE
(X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT SHORT TO VOLTAGE
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 2

Turn the ignition on, then off, and then on again.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B147B-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

Go To 2.

The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FOR VOLTAGE ON THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Disconnect the Amplified Right Rear Speaker harness connector.

Turn the ignition on.

Measure for voltage on the (X206) Amplified Right Rear Speaker (+) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X206) Amplified Right Rear Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK FOR VOLTAGE ON THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT

Measure for voltage on the (X296) Amplified Right Rear Speaker (-) circuit.

Is the voltage above 10.0 volts?

Yes

Repair the (X296) Amplified Right Rear Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B147C-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Amplifier BUS wake-up. Amplifier reset with scan tool.

Set conditions

 Set Condition:  The amplifier detects an open condition on the speaker output circuit.

Possible causes

(X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT OPEN
(X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT OPEN
RIGHT REAR SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 3

Turn the ignition on.

Turn the radio on.

With the scan tool, erase Amplifier DTCs.

With the scan tool, reset the amplifier.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B147C-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes

Go To 2.

Speaker Harness Connector

Turn the ignition off.

Disconnect the Right Rear Speaker harness connector.

Turn the ignition on.

Turn the radio on and turn the volume to mid level.

With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Right Rear Speaker circuits in the Amplified Right Rear Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

Replace the Amplified Right Rear Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT FOR AN OPEN

Amplifier C2 Harness Connector And Amplified Right Rear Speaker Harness Connector

Turn the ignition off.

Disconnect the Amplifier C2 harness connector.

Measure the resistance of the (X206) Amplified Right Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Right Rear Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 4.

Repair the (X206) Amplified Right Rear Speaker (+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT FOR AN OPEN

Amplifier C2 Harness Connector And Amplified Right Rear Speaker Harness Connector

Measure the resistance of the (X296) Amplified Right Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Right Rear Speaker harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

Repair the (X296) Amplified Right Rear Speaker (-) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B147D-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER📷 1

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on. Radio volume at 25 or higher.

Set conditions

 Set Condition:  The amplifier detects that the output circuits are shorted together.

Possible causes

(X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO THE (X296)
AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT
AMPLIFIED RIGHT REAR SPEAKER
AMPLIFIER

1. CHECK FOR AN INTERMITTENT CONDITION📷 1

Turn the ignition on, then off, and then on again.

With the scan tool, clear Amplifier DTCs.

Turn the radio on.

Turn the volume level to 25.

With the scan tool, read Amplifier DTCs.

Does the scan tool display active: B147D-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER?

Yes

Go To 2.

2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT REAR SPEAKER

Turn the ignition off.

Disconnect the Amplified Right Rear Speaker.

Measure the resistance of the speaker between the two terminals.

Is the resistance of the speaker less than 1 ohm?

Yes

Replace the Amplified Right Rear Speaker in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Go To 3. 3. CHECK THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT, AND THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER

(X296) Amplified Right Rear Speaker (-) Circuit

Disconnect the Amplifier C2 harness connector.

Measure the resistance between the (X206) Amplified Right Rear Speaker (+) circuit, and the (X296) Amplified Right Rear Speaker (-) circuit.

Is the resistance below 10K ohms?

Yes

Repair the (X206) Amplified Right Rear Speaker (+) circuit, and the (X296) Amplified Right Rear Speaker (-) circuit for a short together. Perform BODY VERIFICATION TEST - VER 1 .

Replace the amplifier in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

B2222-SATELLITE RADIO RECEIVER INTERNAL

⚡ Wiring diagram: Radio Circuit, Base

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:  The Satellite Radio Receiver detects a software checksum test failure.

Possible causes

SATELLITE RADIO RECEIVER

Diagnostic test

REPLACE THE SATELLITE RADIO RECEIVER

When this code is set, the Satellite Radio must be replaced. Repair Replace the Satellite Radio Receiver in accordance with the Service Information. Refer to STANDARD PROCEDURE (ELECTRICAL DIAGNOSTICS). Refer to STANDARD PROCEDURE (SERVICE INFORMATION).

U0019-CAN INTERIOR BUS(+)/(-) CIRCUIT

⚡ Wiring diagram: Computer Data Lines Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously.

Set conditions

 Set Condition:  Whenever the CAN INTERIOR BUS (+) or INTERIOR BUS (-) circuit is open, shorted to voltage or shorted to ground, this code will set.

Possible causes

CAN INTERIOR BUS DTCs IN THE TOTALLY INTEGRATED POWER MODULE
(D264) CAN INTERIOR BUS (-) CIRCUIT OPEN
(D265) CAN INTERIOR BUS (+) CIRCUIT OPEN
AMPLIFIER

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, record and erase DTCs.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read DTCs.

Does the scan tool display: U0019-CAN INTERIOR BUS CIRCUIT?

Yes

Go To 2.

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK TOTALLY INTEGRATED POWER MODULE DTCs

With the scan tool, read Totally Integrated Power Module DTCs

Does the scan tool display any CAN INTERIOR BUS DTCs - ACTIVE?

Yes

Refer to the symptom list for problems related to Communication in ELECTRONIC CONTROL

MODULES - ELECTRICAL DIAGNOSTICS .

Go to 3. 3. CAN INTERIOR BUS (+) CIRCUIT OPEN

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Totally Integrated Power Module C7 harness connector.

Measure the resistance of the (D265) CAN INTERIOR BUS (+) circuit between the Totally Integrated Power Module C7 harness connector and the Amplifier C1 harness connector.

Is the resistance below 2.0 ohms?

Yes

Go To 4. Perform BODY VERIFICATION TEST - VER 1 .

Repair the CAN INTERIOR BUS (+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . 4. CAN INTERIOR BUS (-) CIRCUIT OPEN

Measure the resistance of the (D264) CAN INTERIOR BUS (-) circuit between the Totally Integrated Power Module C7 harness connector and the Amplifier C1 harness connector.

Is the resistance below 2.0 ohms?

Yes

Replace the Amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Repair the CAN INTERIOR BUS (-) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

U0020-CAN INTERIOR BUS OFF PERFORMANCE

⚡ Wiring diagram: Computer Data Lines Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously.

Set conditions

 Set Condition:  Whenever the CAN INTERIOR BUS (+) or INTERIOR BUS (-) circuit is open, shorted to voltage or shorted to ground, this code will set.

Possible causes

CAN INTERIOR BUS DTCs IN THE TOTALLY INTEGRATED POWER MODULE
(D264) CAN INTERIOR BUS (-) CIRCUIT OPEN
(D265) CAN INTERIOR BUS (+) CIRCUIT OPEN
AMPLIFIER

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, record and erase DTCs.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read DTCs.

Does the scan tool display: U0020-CAN INTERIOR BUS OFF PERFORMANCE?

Yes

Go To 2.

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

Perform BODY VERIFICATION TEST - VER 1 . 2. CHECK FRONT CONTROL MODULE DTCs

With the scan tool, read Totally Integrated Power Module DTCs.

Does the scan tool display any CAN INTERIOR BUS DTCs - ACTIVE?

Yes

Refer to the symptom list for problems related to Communication in ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS .

Go to 3. 3. CAN INTERIOR BUS (+) CIRCUIT OPEN

Turn the ignition off.

Disconnect the Amplifier C1 harness connector.

Disconnect the Totally Integrated Power Module C7 harness connector.

Measure the resistance of the (D265) CAN INTERIOR BUS (+) circuit between the Totally Integrated Power module C7 harness connector and the Amplifier C1 harness connector.

Is the resistance below 2.0 ohms?

Yes

Go To 4. Perform BODY VERIFICATION TEST - VER 1 .

Repair the CAN INTERIOR BUS (+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . 4. CAN INTERIOR BUS (-) CIRCUIT OPEN

Measure the resistance of the (D264) CAN INTERIOR BUS (-) circuit between the Totally Integrated Power Module C7 harness connector and the Amplifier C1 harness connector.

Is the resistance below 2.0 ohms?

Yes

Replace the Amplifier in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 .

Repair the CAN INTERIOR BUS (-) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

U0151-LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER

⚡ Wiring diagram: Supplemental Restraints Circuit (1 of 2)