Vehicle Theft Security - Electrical Diagnostics

DIAGNOSTIC CODE INDEX📷 1

DTC                                                                 Description
B1A20                                                       PRE-ARM TIMEOUT
B1A24                                                  KEY NOT PROGRAMMED
B1A25                                                            INVALID KEY
B1A26                                MAXIMUM NUMBER OF KEYS PROGRAMMED
B1A27                                   SKREEM PROGRAMMING PERFORMANCE
B1A28                                               ECM MISMATCH WITH SKIM
B1A29                                            SKIM BASESTATION MISMATCH
B1A37                             SECURITY TRANSMITTER SENSOR CIRCUIT LOW
B1A38                            SECURITY TRANSMITTER SENSOR CIRCUIT HIGH
B1A3A                                 SECURITY RECEIVER SENSOR CIRCUIT LOW
B1A3B                                SECURITY RECEIVER SENSOR CIRCUIT HIGH
B1A3C                                                INTERNAL SIREN BATTERY
B1A3D                                  SIREN BATTERY / LOSS OF POWER SUPPLY
B1A3E                                                    SIREN/ITM MISMATCH
B1A3F                                    ITM ARMING SEQUENCE PERFORMANCE
B1A41                            SECURITY TRANSMITTER SENSOR CIRCUIT OPEN
B1A42              SECURITY TRANSMITTER SENSOR CIRCUIT SHORTED TOGETHER
B1A43                     SECURITY TRANSMITTER SENSOR RETURN CIRCUIT LOW
B1A44                                SECURITY RECEIVER SENSOR CIRCUIT OPEN
B1A45                  SECURITY RECEIVER SENSOR CIRCUIT SHORTED TOGETHER
B1A46                        SECURITY RECEIVER SENSOR RETURN CIRCUIT LOW
B1A47           SECURITY TRANSMITTER/RECEIVER SENSOR RETURN CIRCUIT HIGH
B210A                                             SYSTEM VOLTAGE LOW (WCM)
B210B                                            SYSTEM VOLTAGE HIGH (WCM)
B210D                                           BATTERY VOLTAGE LOW (WCM)
B210E                                           BATTERY VOLTAGE HIGH (WCM)
B2204                                          ECU CONFIGURATION MISMATCH
B2205                                        ORIGINAL VIN MISSING/MISMATCH
B2206                                         CURRENT VIN MISSING/MISMATCH
B2224                                                       SKREEM INTERNAL
B2229                                   SKREEM INTERNAL - SKIM IMMOBILIZER
B222A                                                 VEHICLE LINE MISMATCH
B223C                              INTRUSION TRANSCEIVER MODULE INTERNAL
B2254                                        COLUMN LOCK MODULE INTERNAL

U0100                                            LOST COMMUNICATION WITH ECM/PCM
U0141                              LOST COMMUNICATION WITH FRONT CONTROL MODULE
U0141                              LOST COMMUNICATION WITH FRONT CONTROL MODULE
U0155                                        LOST COMMUNICATION WITH CLUSTER/CCN
U0159                                 LOST COMMUNICATION WITH PARK ASSIST MODULE
U0164                    LOST COMMUNICATION WITH A/C HEATER CONTROL MODULE (HVAC)
U0187                                         LOST COMMUNICATION WITH DVD PLAYER
U0236                                        NO RESPONSE WITH COLUMN LOCK MODULE
U110D                                      LOST COMMUNICATION WITH SECURITY SIREN
U1416                                    IMPLAUSIBLE SECURITY SIREN SIGNAL RECEIVED

VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS

Diagnosis & testing

B1A20-PRE-ARM TIMEOUT

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

If the VTSS pre-arm sequence is interrupted within 16 seconds after securing the vehicle.

Possible causes

INTERMITTENT PROBLEM WITH FUSED (B+) TO CLUSTER
INTERMITTENT PROBLEM WITH CAN INTERIOR BUS CIRCUITS TO CLUSTER

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read ITM DTC(s). Does the DTC reset?

Yes Remove the Cluster and inspect the Fused B (+) and both CAN INTERIOR BUS circuits for spread terminals, corrosion or intermittent opens. Perform BODY VERIFICATION TEST - VER 1 .

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

B1A24-KEY NOT PROGRAMMED

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Possible causes

KEY NOT PROGRAMMED
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

PROGRAM ALL OF THE IGNITION KEYS

Turn the ignition on. With the scan tool, attempt to program the key(s) into the SKREEM. Was the programming of the key(s) successful?

Yes Perform SKREEM/SKIM VERIFICATION TEST.

No Replace the ignition key and attempt to program it into the SKREEM. If the DTC resets, replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information.

NOTE

If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM/SKIM VERIFICATION TEST. B1A25-INVALID KEY

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

At ignition on and during Key Programming Mode.

Set conditions

 Set Condition:

When the Sentry Key Remote Entry Module (SKREEM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds. When the key that is being used is programmed for a different vehicle.

Possible causes

KEY THAT HAS BEEN PREVIOUSLY PROGRAMMED FOR ANOTHER VEHICLE
MULTIPLE KEY OPERATION
IGNITION KEY
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)
INTERMITTENT WIRING HARNESS PROBLEM

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Verify the key being used is the proper key for this vehicle and a blank key. If the key being programmed is not blank (one that has been programmed for another vehicle) this fault will set.

With the scan tool, read and record the SKREEM DTCs. With the scan tool, erase the SKREEM DTCs

NOTE

Perform the following test several times to ensure the DTC is current.

Turn the ignition off. Wait 10 seconds. Turn the ignition on. With the scan tool, read the SKREEM DTCs. Does the scan tool display the DTC that was previously erased?

Yes Go To 2.

No Go To 6.

2

CHECKING FOR MULTIPLE KEYS

Are there multiple vehicle ignition keys available?

Yes Go To 3.

No Go To 4.

3

MULTIPLE KEY OPERATION

NOTE

Perform the following steps using one of the vehicle ignition keys. When finished, repeat the procedure using each of the other vehicle keys, one at a time.

With the scan tool, erase the SKREEM DTCs. Turn the ignition off. Wait 10 seconds. Turn the ignition on With the scan tool, read the SKREEM DTCs. Is the DTC present for all ignition keys?

Yes Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No Replace the ignition key(s) that cause the SKIM DTC. Perform SKREEM/SKIM VERIFICATION TEST.

4

REPROGRAM KEY

With the scan tool, attempt to reprogram the ignition key to the SKREEM. With the scan tool, erase the SKREEM DTCs. Wait 10 seconds. Turn the ignition on. With the scan tool, read the SKREEM DTCs. Does the DTC set again?

Yes Go To 5.

No Test complete.

5

PROGRAM NEW IGNITION KEY

Replace the ignition key with a new key. With the scan tool, program the new ignition key to the SKREEM. With the scan tool, erase the SKREEM DTCs. Turn the ignition off. Wait 10 seconds. Turn the ignition on. With the scan tool, read the SKREEM DTCs. Does the DTC set again?

Yes Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No Test complete.

6

INTERMITTENT WIRING HARNESS PROBLEM

Turn the ignition off.

NOTE

Check the following items:

 Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.  Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.  Refer to any Technical Service Bulletins (TSB) that may apply. Were any problems found?

Yes Repair wiring harness/connectors as necessary.

Perform SKREEM/SKIM VERIFICATION TEST.

No Test Complete.

B1A26-MAXIMUM NUMBER OF KEYS PROGRAMMED

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:

When the maximum number of keys (8) have been programmed into the Sentry Key Remote Entry Module (SKREEM).

Possible causes

MAXIMUM AMOUNT OF KEY PROGRAMMED INTO SKREEM
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

REPROGRAM ALL IGNITION KEYS

NOTE

This procedure will clear all the key information from the SKREEM. It is important to obtain all of the customer's ignition keys so they may be reprogrammed into the module.

NOTE

If the total number of keys already programmed is equal to Eight and another Key is trying to be programmed, this fault is valid. Explain to the customer no more Keys are allowed to be programmed.

Turn the ignition on. With the scan tool, clear all the key information in the SKREEM. Program the all of the customer keys into the SKREEM (maximum eight). Did the "Maximum Number of Keys Programmed" display again?

Yes Replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information.

NOTE

If this vehicle is equipped with a Steering Column Lock Module it must be replaced along with the SKREEM.

Perform SKREEM/SKIM VERIFICATION TEST.

No Programming of the keys was successful. Test complete. Perform SKREEM/SKIM VERIFICATION TEST.

B1A27-SKREEM PROGRAMMING PERFORMANCE

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Possible causes

SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

VERIFY THAT THE DTC IS ACTIVE

Turn the ignition on.

NOTE

Before continuing, review and check for the following:

 Review the repair history of the vehicle.  Ensure that the vehicle has the correct PCM and SKREEM installed by verifying the part numbers.  With the scan tool, ensure that the PCM and SKREEM are programmed correctly. Compare the PCM VIN to the SKREEM VIN and ensure the two VINs match. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. With the scan tool, read DTCs. Does the DTC reset?

Yes Replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information.

NOTE

If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM/SKIM VERIFICATION TEST.

No The DTC is not active at this time. Test complete.

B1A28-ECM MISMATCH WITH SKIM

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKIM or PCM reset.

Set conditions

 Set Condition:

When a PCM/ECM STATUS message with a Valid Key status is not received by the SKIM within 3.5 seconds of transmitting the last Valid Key Code message to the PCM/ECM.

Possible causes

VERIFYING PCM VIN
INTERMITTENT WIRING HARNESS PROBLEM
PCM

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With the scan tool, erase the SKREEM DTCs. Turn the ignition off. Wait 10 seconds. Turn the ignition on and wait 2 minutes. With the scan tool, read the SKREEM DTCs. Does the scan tool display the DTC that was previously erased?

Yes Go To 2.

No Go To 4.

2

VERIFYING THE PCM VIN

Turn the ignition on. With the scan tool, select Engine system from the main menu. Display and record the Vehicle Identification Number.

NOTE

Ensure that a VIN has been programmed into the PCM. If a VIN is not displayed, attempt to program the PCM with the correct VIN before continuing.

Does the VIN recorded from the PCM match the VIN of the vehicle?

Yes Go To 3.

No Using the scan tool perform the PCM Replace procedure to update the VIN in the PCM. Perform SKREEM/SKIM VERIFICATION TEST.

3

REPLACE SKREEM AND CHECK DTC'S

Turn the ignition off. Replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information. Turn the ignition on. With the scan tool, display and clear all PCM and SKREEM DTC's. Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle. With the scan tool, check for SKREEM DTCs. Does the scan tool display the same DTC?

Yes Replace and program the Powertrain Control Module in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No The repair is complete. Perform SKREEM/SKIM VERIFICATION TEST.

4

INTERMITTENT

Turn the ignition off.

NOTE

Check for the following conditions:

 Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.  Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.  Refer to any Technical Service Bulletins (TSB) that may apply. Were any problems found?

Yes Repair wiring harness/connectors as necessary. Perform SKREEM/SKIM VERIFICATION TEST.

No Test Complete.

B1A29-SKIM BASESTATION MISMATCH

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKIM/SKREEM or PCM reset.

Set conditions

 Set Condition:

When a PCM STATUS message with a Valid Key status is not received by the SKIM within 3.5 seconds of transmitting the last Valid Key Code message to the PCM.

Possible causes

VERIFYING PCM VIN
INTERMITTENT WIRING HARNESS PROBLEM
PCM

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With the scan tool, erase the SKREEM DTCs. Turn the ignition off. Wait 10 seconds. Turn the ignition on and wait 2 minutes. With the scan tool, read the SKREEM DTCs. Does the scan tool display the DTC that was previously erased?

Yes Go To 2.

No Go To 4.

2

VERIFYING THE PCM VIN

Turn the ignition on. With the scan tool, select Engine system from the main menu. Display and record the Vehicle Identification Number.

NOTE

Ensure that a VIN has been programmed into the PCM. If a VIN is not displayed, attempt to program the PCM with the correct VIN before continuing.

Does the VIN recorded from the PCM match the VIN of the vehicle?

Yes Go To 3.

No Using the scan tool perform the PCM Replace procedure to update the VIN in the PCM. Perform SKREEM/SKIM VERIFICATION TEST.

3

REPLACE SKREEM AND CHECK DTCS

Turn the ignition off. Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information. Turn the ignition on. With the scan tool, display and clear all PCM and SKREEM DTCs. Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle. With the scan tool, check for SKREEM DTCs. Does the scan tool display the same DTC?

Yes Using the scan tool perform the PCM Replace procedure to update the VIN in the PCM. Perform SKREEM/SKIM VERIFICATION TEST.

No The repair is complete. Perform SKREEM/SKIM VERIFICATION TEST.

4

INTERMITTENT

Turn the ignition off.

NOTE

Check for the following conditions:

 Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.  Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.  Refer to any Technical Service Bulletins (TSB) that may apply. Were any problems found?

Yes Repair wiring harness/connectors as necessary. Perform SKREEM/SKIM VERIFICATION TEST.

No Test Complete.

B1A37-SECURITY TRANSMITTER SENSOR CIRCUIT LOW

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

When the VTSS is armed.

Set conditions

 Set Condition:

If the current flow on the sensor signal circuit is above a specified range this DTC will set.

Possible causes

(A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
INTRUSION SENSOR TRANSMITTER
INTRUSION TRANSCEIVER MODULE

1. TEST FOR INTERMITTENT CONDITION📷 3

Turn the ignition on.

With the scan tool, record and erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait two minutes.

Disarm the VTSS turn the ignition on.

Turn the ignition on and with the scan tool, read DTC's.

Does the scan tool display B1A37-SECURITY TRANSMITTER SENSOR CIRCUIT LOW ?

Yes

Go To 2.

No

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. INTRUSION SENSOR TRANSMITTER

Turn the ignition off.

Disconnect the Intrusion Sensor Transmitter connector.

Turn the ignition on and with the scan tool, erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait two minutes.

Disarm the VTSS turn the ignition on.

With the scan tool, read DTC's.

Does the scan tool display B1A41-SECURITY TRANSMITTER SENSOR CIRCUIT OPEN?

Yes

Replace the Intrusion Sensor Transmitter. Perform BODY VERIFICATION TEST - VER 1 .

No

Go To 3. 3. CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORT TO GROUND

Circuit At Intrusion Transceiver Module Connector

Turn the ignition off.

Disconnect the Intrusion Transceiver Module connector.

Measure the resistance between ground and the (A645) Intrusion Transmitter Sensor Signal circuit at the Intrusion Transceiver Module connector.

Is the resistance below 5.0 ohms?

Yes

Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A38-SECURITY TRANSMITTER SENSOR CIRCUIT HIGH

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

When the VTSS is armed.

Set conditions

 Set Condition:

If the current flow on the sensor signal circuit is above a specified range this DTC will set.

Possible causes

(A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
INTRUSION TRANSCEIVER MODULE

1. TEST FOR INTERMITTENT CONDITION📷 2

Turn the ignition on.

With the scan tool, record and erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait two minutes.

Disarm the VTSS turn the ignition on.

Turn the ignition on and with the scan tool, read DTC's.

Does the scan tool display B1A38-SECURITY TRANSMITTER SENSOR CIRCUIT HIGH ?

Yes

Go To 2.

No

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 THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

Signal Circuit At Intrusion Transceiver Module Connector

Turn the ignition off.

Disconnect the Intrusion Sensor Transmitter connector

Disconnect the Intrusion Transceiver Module connector.

Turn the ignition on.

Measure for voltage between chassis ground and the (A645) Intrusion Transmitter Sensor Signal circuit at the Intrusion Transceiver Module connector.

Is there any voltage present?

Yes

Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A3A-SECURITY RECEIVER SENSOR CIRCUIT LOW

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

When the VTSS is armed.

Set conditions

 Set Condition:

If the current flow on the sensor signal circuit is above a specified range this DTC will set.

Possible causes

(G460) INTRUSION RECEIVER SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
INTRUSION SENSOR RECEIVER
INTRUSION TRANSCEIVER MODULE

1. TEST FOR INTERMITTENT CONDITION📷 3

Turn the ignition on.

With the scan tool, record and erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait two minutes.

Disarm the VTSS turn the ignition on.

Turn the ignition on and with the scan tool, read DTC's.

Does the scan tool display B1A3A-SECURITY RECEIVER SENSOR CIRCUIT LOW ?

Yes

Go To 2.

No

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. INTRUSION SENSOR RECEIVER

Turn the ignition off.

Disconnect the Intrusion Sensor Receiver connector.

Turn the ignition on and with the scan tool, erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait two minutes.

Disarm the VTSS turn the ignition on.

With the scan tool, read DTC's.

Does the scan tool display B1A44-SECURITY RECEIVER SENSOR CIRCUIT OPEN?

Yes

Replace the Intrusion Sensor Receiver. Perform BODY VERIFICATION TEST - VER 1 .

No

Go To 3. 3. CHECK THE (G460) INTRUSION RECEIVER SENSOR SIGNAL CIRCUIT SHORT TO GROUND

Circuit At Intrusion Transceiver Module Connector

Turn the ignition off.

Disconnect the Intrusion Transceiver Module connector.

Measure the resistance between ground and the (G460) Intrusion Receiver Sensor Signal circuit at the Intrusion Transceiver Module connector.

Is the resistance below 5.0 ohms?

Yes

Repair the (G460) Intrusion Receiver Sensor Signal circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A3B-SECURITY RECEIVER SENSOR CIRCUIT HIGH

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

When the VTSS is armed.

Set conditions

 Set Condition:

If the current flow on the sensor signal circuit is above a specified range this DTC will set.

Possible causes

(G460) INTRUSION RECEIVER SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
INTRUSION TRANSCEIVER MODULE

1. TEST FOR INTERMITTENT CONDITION📷 3

Turn the ignition on.

With the scan tool, record and erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait two minutes.

Disarm the VTSS turn the ignition on.

Turn the ignition on and with the scan tool, read DTC's.

Does the scan tool display B1A3B-SECURITY RECEIVER SENSOR CIRCUIT HIGH ?

Yes

Go To 2.

No

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 THE (G460) INTRUSION RECEIVER SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

Signal Circuit At Intrusion Transceiver Module Connector

Turn the ignition off.

Disconnect the Intrusion Sensor Receiver connector.

Disconnect the Intrusion Transceiver Module connector.

Measure for voltage between chassis ground and the (G460) Intrusion Receiver Sensor Signal circuit at the Intrusion Transceiver Module connector.

Is there any voltage present?

Yes

Repair the (G460) Intrusion Receiver Sensor Signal circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A3C-INTERNAL SIREN BATTERY

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the engine over 600 RPM.

Set conditions

 Set Condition:

When the internal battery within the siren does not charge as expected, the ITM sets this code.

Possible causes

VEHICLE STORED WITH NO BATTERY VOLTAGE FOR EXTENDED PERIOD OF TIME
SIREN

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Start the engine and allow it to idle for 2 minutes then turn the engine off. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 2.

No DTC is not active at this time. Test complete.

2

VEHICLE STORED WITH NO BATTERY VOLTAGE FOR EXTENDED PERIOD OF TIME

NOTE

If the vehicle was allowed to sit with no battery voltage for an extended period of time the back up battery located in the siren may discharge and need to be recharged.

Was the vehicle battery power just restored after the vehicle was stored with no power for an extended period of time?

Yes Allow the vehicle to sit with a fully charged battery for two hours then restart this procedure.

No Replace the Siren the in accordance with the Service Information. Refer to STANDARD PROCEDURE .

B1A3D-SIREN BATTERY / LOSS OF POWER SUPPLY

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously with the VTSS armed.

Set conditions

 Set Condition:

If the ITM detects incorrect voltage at the siren this code will set.

HARNESS TAMPERING / INTERMITTENT CONDITION📷 3

(A100) FUSED B(+) CIRCUIT (Z908) GROUND OPEN SIREN

Diagnostic test

1

INSPECT SIREN HARNESS

Inspect the wiring harness to the siren for any signs of tampering or intermittent condition. Were there any problems found?

Yes Repair wiring as necessary. Perform BODY VERIFICATION TEST - VER 1 .

No Go To 2.

2

DETERMINING IF DTC IS CURRENT

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 3.

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

3

CHECK THE (A100) FUSED B(+) CIRCUIT AT THE SIREN

Siren Connector Turn the ignition off. Disconnect the Siren connector. Using a 12-volt test light connected to ground, check the (A100) Fused B(+) circuit at the siren connector. Does the test light illuminate brightly?

Yes Go To 4.

No Repair the (A100) Fused B(+) circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

4

CHECK THE (Z908) GROUND CIRCUIT AT THE SIREN

Connector Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuit at the siren connector. Does the test light illuminate brightly?

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

No Repair the (Z908) Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B1A3E-SIREN/ITM MISMATCH

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

While the VTSS is armed.

Set conditions

 Set Condition:

When the learned Siren information stored in the ITM does not match.

Possible causes

SIREN

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Inspect wiring from ITM to Siren for an intermittent open condition. Check connector terminals for back out, corrosion or loose terminal contact. If OK, Replace the Siren. Perform BODY VERIFICATION TEST - VER 1 .

No Go to 2.

2. INTERMITTENT CONDITION📷 1

NOTE: Check for any of the follow conditions:

 Poor wire to terminal connection  Corroded terminals

 Backed out or loose terminals

 Broken wire internal to the insulation

Were there any problems found?

Yes

Repair the wiring as necessary. Perform BODY VERIFICATION TEST - VER 1 .

No

DTC is not active at this time. Test complete.

B1A3F-ITM ARMING SEQUENCE PERFORMANCE

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

ITM arming process did not complete in a predetermined amount time.

Possible causes

INTERMITTENT CAN INTERIOR BUS COMMUNICATION
SOFTWARE UPDATE FOR ITM OR TIPM

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read ITM DTC(s). Does the DTC reset?

Yes Check for and correct any CAN INTERIOR Bus DTC's set in the ITM or the TIPM. Also check for related software updates for the ITM and/or TIPM. Perform BODY VERIFICATION TEST - VER 1 .

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

B1A41-SECURITY TRANSMITTER SENSOR CIRCUIT OPEN

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

When the VTSS is armed.

Set conditions

 Set Condition:

If the voltage current is below a specified range this DTC will set.

Possible causes

(A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT OPEN
(G945) SENSOR GROUND CIRCUIT OPEN
INTRUSION SENSOR TRANSMITTER OPEN/MISSING
INTRUSION TRANSCEIVER MODULE

1. TEST FOR INTERMITTENT CONDITION📷 8

Turn the ignition on.

With the scan tool, record and erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait one minute.

Disarm the VTSS turn the ignition on and wait one minute.

With the scan tool, read DTC's.

Does the scan tool display B1A41-SECURITY TRANSMITTER SENSOR CIRCUIT OPEN?

Yes

Go To 2.

No

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 THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL CIRCUIT VOLTAGE

Ground Circuit

Disconnect the Intrusion Sensor Transmitter connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

With the scan tool actuate the Intrusion Sensor Transmitter.

Measure the voltage between (A645) Intrusion Sensor Signal circuit and (G945) Sensor Ground circuit.

Is the voltage above 10.0 volts

Yes

Go To 3.

No

Go To 4. 3. CHECK THE INTRUSION SENSOR TRANSMITTER

Turn the ignition off.

Install a known good Intrusion Sensor Transmitter.

Turn the ignition on.

With the scan tool erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait one minute.

Disarm the VTSS turn the ignition on and wait one minute.

With the scan tool, read DTC's.

Does the scan tool display B1A41-SECURITY TRANSMITTER SENSOR CIRCUIT OPEN?

Yes

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the original Intrusion Sensor Transmitter. Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL WIRE

Intrusion Sensor Transmitter Connector And Intrusion Transceiver Module Connector

Turn the ignition off.

Disconnect the Intrusion Transceiver Module connector.

Measure the resistance of the (A645) Intrusion Transmitter Sensor Signal circuit between the Intrusion Sensor Transmitter connector and the Intrusion Transceiver Module connector.

Is the resistance below 5.0 ohms?

Yes

Repair the (A645) Intrusion Transmitter Sensor Signal circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

No

Go To 5. 5. CHECK THE (G945) SENSOR GROUND WIRE FOR AN OPEN

Transmitter Connector To Intrusion Transceiver Module Connector

Ensure Ignition off.

Measure the resistance of the (G945) Sensor Ground circuit from the Intrusion Sensor Transmitter connector to the Intrusion Transceiver Module connector.

Is the resistance below 5.0 ohms?

Yes

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No

Repair the (G945) Sensor Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B1A42-SECURITY TRANSMITTER SENSOR CIRCUIT SHORTED TOGETHER

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

If the voltage current is below a specified range this DTC will set.

Possible causes

INTRUSION SENSOR TRANSMITTER
(A645) INTRUSION TRANSMITTER SENSOR SIGNAL SHORTED TO (G945) SENSOR GROUND
INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 2.

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

2

INTRUSION SENSOR TRANSMITTER

Disconnect the Intrusion Sensor Transmitter connector.

NOTE

Check connectors - Clean/repair as necessary.

Connect a known good Intrusion Sensor Transmitter. Turn the ignition on. With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 3.

No Replace the original Intrusion Sensor Transmitter. Perform BODY VERIFICATION TEST - VER 1 .

3

CHECK THE (A645) INTRUSION TRANSMITTER SENSOR SIGNAL WIRE FOR A SHORT

TO (G945) SENSOR GROUND (G945) Sensor Ground Circuit In Intrusion Sensor Transmitter Connector Turn the ignition off. Disconnect the Intrusion Sensor Transceiver connector. Disconnect the Intrusion Transceiver Module connector. Measure the resistance between the (A645) Intrusion Transmitter Sensor Signal circuit to the (G945) Sensor Ground circuit in the Intrusion Sensor Transmitter connector. Is the resistance below 5.0 ohms?

Yes Repair the (A645) Intrusion Transmitter Sensor Signal circuit for a short to the (G945) Sensor Ground circuit. Perform BODY VERIFICATION TEST - VER 1 .

No Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A43-SECURITY TRANSMITTER SENSOR RETURN CIRCUIT LOW

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

The Intrusion Transceiver Module detects a short to ground condition on the sensor ground circuit.

Possible causes

INTRUSION SENSOR TRANSMITTER (G945) SENSOR GROUND CIRCUIT SHORTED TO
GROUND
INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 2. Perform BODY VERIFICATION TEST - VER 1 .

No DTC is not active at this time. Test complete.

Perform BODY VERIFICATION TEST - VER 1 .

2

CHECK THE (G945) SENSOR GROUND CIRCUIT SHORTED TO GROUND

Sensor Transmitter Connector Turn the ignition off. Disconnect the Intrusion Sensor Transmitter connector. Disconnect the Intrusion Transceiver Module connector. Measure the resistance between ground and the (G945) Sensor Ground circuit at the Intrusion Sensor Transmitter connector. Is the resistance below 5.0 ohms?

Yes Repair the (G945) Sensor Ground circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

No Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A44-SECURITY RECEIVER SENSOR CIRCUIT OPEN

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

When the VTSS is armed.

Set conditions

 Set Condition:

If the voltage current is below a specified range this DTC will set.

Possible causes

(G460) INTRUSION RECEIVER SENSOR SIGNAL CIRCUIT OPEN
(G946) SENSOR GROUND CIRCUIT OPEN
INTRUSION SENSOR RECEIVER OPEN/MISSING
INTRUSION TRANSCEIVER MODULE

1. TEST FOR INTERMITTENT CONDITION📷 10

Turn the ignition on.

With the scan tool, record and erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait one minute.

Disarm the VTSS turn the ignition on and wait one minute.

With the scan tool, read DTC's.

Does the scan tool display B1A44-SECURITY RECEIVER SENSOR CIRCUIT OPEN?

Yes

Go To 2.

No

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 THE (G460) INTRUSION RECEIVER SENSOR SIGNAL CIRCUIT VOLTAGE

Sensor Ground Circuit

Disconnect the Intrusion Sensor Receiver connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

With the scan tool actuate the Intrusion Sensor Receiver.

Measure the voltage between (G460) Intrusion Receiver Sensor Signal circuit and (G946) Sensor Ground circuit.

Is the voltage above 10.0 volts

Yes

Go To 3.

No

Go To 4. 3. CHECK THE INTRUSION SENSOR RECEIVER

Turn the ignition off.

Install a known good Intrusion Sensor Receiver.

Turn the ignition on.

With the scan tool erase DTC's.

Turn the ignition off and remove the key from the ignition.

Close all doors and arm the VTSS and wait one minute.

Disarm the VTSS turn the ignition on and wait one minute.

With the scan tool, read DTC's.

Does the scan tool display B1A44-SECURITY RECEIVER SENSOR CIRCUIT OPEN?

Yes

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the original Intrusion Sensor Receiver. Perform BODY VERIFICATION TEST - VER 1 . 4. CHECK THE (G460) INTRUSION RECEIVER SENSOR SIGNAL WIRE

Intrusion Sensor Receiver Connector And Intrusion Transceiver Module Connector

Turn the ignition off.

Disconnect the Intrusion Transceiver Module connector.

Measure the resistance of the (G460) Intrusion Receiver Sensor Signal circuit between the Intrusion Sensor Receiver connector and the Intrusion Transceiver Module connector.

Is the resistance below 5.0 ohms?

Yes

Repair the (G460) Intrusion Receiver Sensor Signal circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

No

Go To 5. Perform BODY VERIFICATION TEST - VER 1 . 5. CHECK THE (G946) SENSOR GROUND WIRE FOR AN OPEN

Connector To Intrusion Transceiver Module Connector

Ensure Ignition is off.

Measure the resistance of the (G946) Sensor Ground circuit from the Intrusion Sensor Receiver connector to the Intrusion Transceiver Module connector.

Is the resistance below 5.0 ohms?

Yes

Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No

Repair the (G946) Sensor Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

B1A45-SECURITY RECEIVER SENSOR CIRCUIT SHORTED TOGETHER

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

If the voltage current is below a specified range this DTC will set.

Possible causes

INTRUSION SENSOR RECEIVER
(G460) INTRUSION RECEIVER SENSOR SIGNAL SHORTED TO (G946) SENSOR GROUND
INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 2.

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

2

INTRUSION SENSOR RECEIVER

Disconnect the Intrusion Sensor Receiver connector.

NOTE

Check connectors - Clean/repair as necessary.

Connect a known good Intrusion Sensor Receiver. Turn the ignition on. With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 3.

No Replace the original Intrusion Sensor Receiver. Perform BODY VERIFICATION TEST - VER 1 .

3

CHECK THE (G460) INTRUSION RECEIVER SENSOR SIGNAL WIRE FOR A SHORT TO

(G946) SENSOR GROUND Sensor Ground Circuit In Intrusion Sensor Receiver Connector Turn the ignition off. Disconnect the Intrusion Sensor Transceiver connector. Disconnect the Intrusion Transceiver Module connector. Measure the resistance between the (G460) Intrusion Receiver Sensor Signal circuit to the (G946) Sensor Ground circuit in the Intrusion Sensor Receiver connector. Is the resistance below 5.0 ohms?

Yes Repair the (G460) Intrusion Receiver Sensor Signal circuit for a short to the (G946) Sensor Ground circuit. Perform BODY VERIFICATION TEST - VER 1 .

No Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A46-SECURITY RECEIVER SENSOR RETURN CIRCUIT LOW

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

The Intrusion Transceiver Module detects a short to ground condition on the sensor ground circuit.

Possible causes

INTRUSION SENSOR RECEIVER (G946) SENSOR GROUND CIRCUIT SHORTED TO GROUND
INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go to 2. Perform BODY VERIFICATION TEST - VER 1 .

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

2

CHECK THE (G946) SENSOR GROUND CIRCUIT SHORTED TO GROUND

Sensor Receiver Connector Turn the ignition off. Disconnect the Intrusion Sensor Receiver connector. Disconnect the Intrusion Transceiver Module connector. Measure the resistance between ground and the (G946) Sensor Ground circuit at the Intrusion Sensor Receiver connector. Is the resistance below 5.0 ohms?

Yes Repair the (G946) Sensor Ground circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

No Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B1A47-SECURITY TRANSMITTER/RECEIVER SENSOR RETURN CIRCUIT HIGH

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

During the VTSS pre-arm process.

Set conditions

 Set Condition:

The Intrusion Transceiver Module detects a short to battery condition on the sensor ground circuit.

Possible causes

TRANSMITTER (G945) SENSOR GROUND CIRCUIT SHORTED TO BATTERY
RECEIVER (G946) SENSOR GROUND CIRCUIT SHORTED TO BATTERY
INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go to 2.

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

2

CHECK THE (G946) SENSOR GROUND CIRCUIT SHORT TO BATTERY

Connector Turn the ignition off. Disconnect the Intrusion Sensor Receiver connector. Disconnect the Intrusion Transceiver Module connector. Turn the ignition on. Measure the voltage of the (G946) Sensor Ground circuit in the Intrusion Sensor Receiver connector. Is there any voltage present?

Yes Repair the (G946) Sensor Ground circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

No Go To 3.

3

CHECK THE (G945) SENSOR GROUND CIRCUIT SHORT TO BATTERY

Turn the ignition off. Disconnect the Intrusion Sensor Transmitter connector. Turn the ignition on. Measure the voltage of the (G945) Sensor Ground circuit in the Intrusion Sensor Transmitter connector. Is there any voltage present?

Yes Repair the (G945) Sensor Ground circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

No Replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

B210A-SYSTEM VOLTAGE LOW (WCM)

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Ignition key in the run position.

Set conditions

 Set Condition:

The Sentry Key Remote Entry Module (SKREEM) has detected the system voltage is below 9 volts.

Possible causes

FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
FUSED (B+) CIRCUIT OPEN
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Powertrain DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 3.

No Go to 2.

2. INTERMITTENT CONDITION

NOTE: Check for any of the follow conditions:

 Poor wire to terminal connection  Corroded terminals

 Backed out or loose terminals

 Broken wire internal to the insulation

 Dirty (partial) module ground

With the ignition on, wiggle the related wires.

Using a scan tool, read DTC(s).

Does the DTC reset?

Yes

Repair the wiring as necessary. Perform SKREEM/SKIM VERIFICATION TEST.

No

DTC is not active at this time. Test complete.

3. FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN

NOTE: Check the related fuses to the Fused Ignition Switch Output (Run-Start) circuit. If the fuse is found to be open repair the circuit for a shorted condition.

Turn the ignition off.

Disconnect the SKREEM harness connector.

Turn the ignition on.

Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the SKREEM harness connector.

Does the test light illuminate brightly?

Yes

Go to 4.

No

Repair the Fused Ignition Switch Output (Run-Start) circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST. 4. FUSED (B+) CIRCUIT OPEN

Turn the ignition off.

Using a 12 volt test light connected to ground, probe the Fused (B+) circuit in the SKREEM harness connector.

Does the test light illuminate brightly?

Yes

Go to 5.

No

Repair the Fused (B+) circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST. 5. SKREEM

NOTE: Repeat the below procedure for both the Fused Ignition Switch Output (Run-Start) circuit and the Fused (B+) circuit.

NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing.

Turn the ignition off.

Reconnect the SKREEM connector.

Back probe the Fused Ignition Switch Output (Run-Start) circuit and then the Fused (B+) circuit.

Start the engine.

Using the scan tool, view battery voltage under Data Display in the Engine category.

Compare the voltage on the scan tool to the voltage reading on the voltmeter.

Is the voltage on the scan tool equal to the voltmeter reading +/-.5 volt?

Yes

Replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No

Repair the circuit(s) that indicated the incorrect voltage. Perform SKREEM/SKIM VERIFICATION TEST.

B210B-SYSTEM VOLTAGE HIGH (WCM)

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Ignition key in the run position.

Set conditions

 Set Condition:

The Sentry Key Remote Entry Module (SKREEM) has detected the system voltage above 16 volts.

Possible causes

FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Powertrain DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, read DTC(s). Does the DTC reset?

Yes Go To 3.

No Go to 2.

2. INTERMITTENT CONDITION

NOTE: Check for any of the follow conditions:

 Poor wire to terminal connection  Corroded terminals

 Backed out or loose terminals

 Broken wire internal to the insulation

 Dirty (partial) module ground

With the ignition on, wiggle the related wires.

Using a scan tool, read DTC(s).

Does the DTC reset?

Yes

Repair the wiring as necessary. Perform SKREEM/SKIM VERIFICATION TEST.

No

DTC is not active at this time. Test complete.

3. FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT SHORTED TO BATTERY

VOLTAGE

NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing.

Turn the ignition off.

Disconnect the SKREEM harness connector.

Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the SKREEM harness connector.

Does the test light illuminate brightly?

Yes

Repair the Fused Ignition Switch Output (Run-Start) circuit for a short to voltage. Perform SKREEM/SKIM VERIFICATION TEST.

No

Replace and reprogram the SKREEM in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

B210D-BATTERY VOLTAGE LOW (WCM)

⚡ Wiring diagram: Charging Circuit

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Ignition key in any position but run.

Set conditions

 Set Condition:

The Sentry Key Remote Entry Module (SKREEM) has detected the Fused (B+) input voltage below 9 volts with the Key in any position except for RUN.

Possible causes

FUSED (B+) CIRCUIT OPEN
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Powertrain DTC(s) before continuing.

With a scan tool, read and record DTCs. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, select View DTCs. Does the DTC reset?

Yes Go To 3.

No Go to 2.

2. INTERMITTENT CONDITION

NOTE: Check for any of the follow conditions:

 Poor wire to terminal connection  Corroded terminals

 Backed out or loose terminals

 Broken wire internal to the insulation

 Dirty (partial) module ground

With the ignition on, wiggle the related wires.

Using a scan tool, View DTC(s).

Does the DTC reset?

Yes

Repair the wiring as necessary. Perform SKREEM/SKIM VERIFICATION TEST.

No

DTC is not active at this time. Test complete.

3. FUSED (B+) CIRCUIT OPEN

NOTE: Check the related fuses to the Fused (B+) circuit. If the fuse is found to be open repair the circuit for a shorted condition.

Turn the ignition off.

Disconnect the SKREEM harness connector.

Turn the ignition on.

Using a 12 volt test light connected to ground, probe the Fused (B+) circuit in the SKREEM harness connector.

Does the test light illuminate brightly?

Yes

Go to 4.

No

Repair the Fused (B+) circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST. 4. SKREEM

NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing.

Turn the ignition off.

Reconnect the SKREEM connector

Back probe the Fused (B+) circuit.

Start the engine.

Using the scan tool, view battery voltage under Data Display in the Engine category.

Compare the voltage on the scan tool to the voltage reading on the voltmeter.

Is the voltage on the scan tool equal to the voltmeter reading +/-.5 volt?

Yes

Replace and program the SKREEM in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No

Repair the Fused (B+) circuit for high resistances. Perform SKREEM/SKIM VERIFICATION TEST.

B210E-BATTERY VOLTAGE HIGH (WCM)

⚡ Wiring diagram: Charging Circuit

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Ignition key in any position but run.

Set conditions

 Set Condition:

The Sentry Key Remote Entry Module (SKREEM) has detected the Fused (B+) input voltage above 16 volts in all Key Positions except for RUN.

Possible causes

VEHICLE CHARGING SYSTEM
SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

CAUTION

Diagnose and repair all Powertrain DTCs before continuing.

Turn the ignition on. With the scan tool, record and erase the SKREEM DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, read the SKREEM DTCs. Does the DTC reset?

Yes Replace and program the SKREEM in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No The DTC is not active at this time. Test complete.

B2204-ECU CONFIGURATION MISMATCH

⚡ 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.

Set conditions

 Set Condition:

The WCM receives different information than is configured within the module. Examples include Model Year, Country Code, Body Style, Platform, Remote Start, Sun Roof.

Possible causes

SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

VERIFY THAT THE DTC IS ACTIVE

Turn the ignition on.

NOTE

Before continuing, review and check for the following:

 Review the repair history of the vehicle.  Ensure that the vehicle has the correct PCM and SKREEM installed by verifying the part numbers.  With the scan tool, ensure that the PCM and SKREEM are programmed correctly. Compare the PCM VIN to the SKREEM VIN and ensure the two VINs match. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. With the scan tool, select View DTCs. Does the DTC reset?

Yes Replace and program the SKREEM in accordance with the Service Information.

NOTE

If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM/SKIM VERIFICATION TEST.

No The DTC is not active at this time. Test complete.

B2205-ORIGINAL VIN MISSING/MISMATCH

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKIM or PCM reset.

Set conditions

 Set Condition:

A valid key is recognized but the programmed VIN does not match between the WCM and PCM/ECM.

Possible causes

VERIFYING PCM VIN
INTERMITTENT WIRING HARNESS PROBLEM
PCM

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With the scan tool, erase the SKREEM DTCs. Turn the ignition off. Wait 10 seconds. Turn the ignition on and wait 2 minutes. With the scan tool, read the SKREEM DTCs. Does the scan tool display the DTC that was previously erased?

Yes Go To 2.

No Go To 4.

2

VERIFYING THE PCM VIN

Turn the ignition on. With the scan tool, select Engine system from the main menu. Display and record the Vehicle Identification Number.

NOTE

Ensure that a VIN has been programmed into the PCM. If a VIN is not displayed, attempt to program the PCM with the correct VIN before continuing.

Does the VIN recorded from the PCM match the VIN of the vehicle?

Yes Go To 3.

No Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

3

REPLACE SKREEM AND CHECK DTC'S

Turn the ignition off. Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information. Turn the ignition on. With the scan tool, display and clear all PCM and SKREEM DTC's. Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle. With the scan tool, check for SKREEM DTCs. Does the scan tool display the same DTC?

Yes Replace and program the Powertrain Control Module in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No The repair is complete. Perform SKREEM/SKIM VERIFICATION TEST.

4

INTERMITTENT

Turn the ignition off.

NOTE

Check for the following conditions:

 Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.  Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.  Refer to any Technical Service Bulletins (TSB) that may apply. Were any problems found?

Yes Repair wiring harness/connectors as necessary. Perform SKREEM/SKIM VERIFICATION TEST.

No Test Complete.

B2206-CURRENT VIN MISSING/MISMATCH

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Anytime the ignition key is in the ON position.

Set conditions

 Set Condition:

VIN stored in Intrusion Transceiver Module does not match the VIN stored in the Cluster.

Possible causes

INTRUSION TRANSCEIVER MODULE SWAPPED FROM DIFFERENT VEHICLE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read ITM DTC(s). Does the DTC reset?

Yes Using the scan tool under Miscellaneous functions initialize the Intrusion Transceiver Module. Perform BODY VERIFICATION TEST - VER 1 .

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

B2224-SKREEM INTERNAL

⚡ Wiring diagram: Anti-theft Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:

Sentry Key Remote Entry Module (SKREEM) watchdog resets.

Possible causes

SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

VERIFY THAT THE DTC IS ACTIVE

Turn the ignition on.

NOTE

Before continuing, review and check for the following:

 Review the repair history of the vehicle.  Ensure that the vehicle has the correct PCM and SKREEM installed by verifying the part numbers.  With the scan tool, ensure that the PCM and SKREEM are programmed correctly. Compare the PCM VIN to the SKREEM VIN and ensure the two VINs match. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. With the scan tool, read DTCs. Does the DTC reset?

Yes Replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information.

NOTE

If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM/SKIM VERIFICATION TEST.

No The DTC is not active at this time. Test complete.

B2229-SKREEM INTERNAL - SKIM IMMOBILIZER

⚡ Wiring diagram: Anti-theft Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

With the ignition on.

Set conditions

 Set Condition:

When the Antenna diagnostic test fails.

Possible causes

SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

VERIFY THAT THE DTC IS ACTIVE

Turn the ignition on.

NOTE

Before continuing, review and check for the following:

 Review the repair history of the vehicle.  Ensure that the vehicle has the correct PCM and SKREEM installed by verifying the part numbers.  With the scan tool, ensure that the PCM and SKREEM are programmed correctly. Compare the PCM VIN to the SKREEM VIN and ensure the two VINs match. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. With the scan tool, read DTCs. Does the DTC reset?

Yes Replace and program the Sentry Key Remote Entry Module (SKREEM) in accordance with the Service Information.

NOTE

If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Perform SKREEM/SKIM VERIFICATION TEST.

No The DTC is not active at this time. Test complete.

B222A-VEHICLE LINE MISMATCH

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Anytime the ignition key is in the ON position.

Set conditions

 Set Condition:

If the Intrusion Transceiver Module is not configured.

Possible causes

INTRUSION TRANSCEIVER MODULE CONFIGURATION

Diagnostic test

1

CONFIGURE THE INTRUSION TRANSCEIVER MODULE

Using the scan tool under miscellaneous functions perform the initialization procedure for the Intrusion Transceiver Module. With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read DTC(s). Does the DTC reset?

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

No Test complete. Perform BODY VERIFICATION TEST - VER 1 .

B223C-INTRUSION TRANSCEIVER MODULE INTERNAL

⚡ Wiring diagram: Anti-theft Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Ignition on.

Set conditions

 Set Condition:

Internal Intrusion Transceiver Module test failed.

Possible causes

INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read ITM DTC(s). Does the DTC reset?

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

No DTC is not active at this time. Test complete. Perform BODY VERIFICATION TEST - VER 1 .

B2254-COLUMN LOCK MODULE INTERNAL

⚡ Wiring diagram: Power Door Locks Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Ignition key in the run position.

Set conditions

 Set Condition:

The alarm message fails three times.

Possible causes

SENTRY KEY REMOTE ENTRY MODULE (SKREEM)

Diagnostic test

1

VERIFY THAT THE DTC IS ACTIVE

Turn the ignition on.

NOTE

Before continuing, review and check for the following:

 The battery voltage must be above 10 volts.  Review the repair history of the vehicle.  Ensure that the PCM and SKREEM are programmed correctly. Compare the PCM VIN to the SKREEM VIN and ensure the two VINs match. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. With the scan tool, read DTCs. Is the DTC active?

Yes Replace and program the SKREEM and Steering Column Lock Module in accordance with the Service Information. Perform SKREEM/SKIM VERIFICATION TEST.

No The DTC is not active at this time. Test complete.

U0100-LOST COMMUNICATION WITH ECM/PCM

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure. Perform the No Response From ECM or PCM procedure.

U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure.

U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure.

U0155-LOST COMMUNICATION WITH CLUSTER/CCN

⚡ Wiring diagram: Instrument Cluster Circuit

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure.

U0159-LOST COMMUNICATION WITH PARK ASSIST MODULE

⚡ Wiring diagram: Parking Assistant Circuit

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure.

U0164-LOST COMMUNICATION WITH A/C HEATER CONTROL MODULE (HVAC)

⚡ Wiring diagram: Automatic A/C Circuit

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure.

U0187-LOST COMMUNICATION WITH DVD PLAYER

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

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Refer to DIAGNOSIS AND TESTING for the diagnostic test procedure.

U0236 - NO RESPONSE WITH COLUMN LOCK MODULE

⚡ Wiring diagram: Power Door Locks Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible causes

(A935) FUSED B(+) CIRCUIT OPEN
(A306) FUSED B(+) CIRCUIT OPEN
Z906 GROUND CIRCUIT OPEN
(D508) COM-LIN (TPM) LAN CIRCUIT OPEN
STEERING COLUMN-LOCK MODULE

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

With the scan tool, read and record the SKREEM DTCs. With the scan tool, erase the SKREEM DTCs

NOTE

Perform the following test several times to ensure the DTC is current.

Turn the ignition off. Wait 10 seconds. Turn the ignition on. With the scan tool, read the SKREEM DTCs. Does the scan tool display the DTC that was previously erased?

Yes Go To 2.

No The conditions that set the DTC are no longer present. Inspect the wiring harness and related connectors for damage, pin push out or corrosion.

2

(A935) FUSED B(+) CIRCUIT OPEN

Turn the ignition off. Disconnect the Steering Column-Lock Module harness connector. Using a 12-volt test light connected to ground, probe the (A935) Fused B(+) circuit. Does the test light illuminate brightly?

Yes Go To 3.

No Repair the (A935) Fused B(+) circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST.

3

(A306) FUSED B(+) CIRCUIT OPEN

Using a 12-volt test light connected to ground, probe the (A306) Fused B(+) circuit. Does the test light illuminate brightly?

Yes Go To 4.

No Repair the (A306) Fused B(+) circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST.

4

(Z906) GROUND CIRCUIT OPEN

Using a 12-volt test light connected to 12-volts, check the (Z906) Ground circuit. Does the test light illuminate brightly?

Yes Go To 5.

No Repair the (Z906) Ground circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST.

5

(D508) COM-LIN (TPM) LAN CIRCUIT OPEN

Disconnect the SKREEM/WCM harness connector. Measure the resistance of the (D508) COM-LIN (TPM) LAN circuit between the SKREEM/WCM harness connector and the Steering Column-Lock Module connector. Is resistance below 5.0 ohms?

Yes Replace the Sentry Key Remote Entry Module/Steering Column-Lock Module in accordance with the service information. Perform SKREEM/SKIM VERIFICATION TEST.

No Repair the (D508) COM-LIN (TPM) LAN circuit for an open. Perform SKREEM/SKIM VERIFICATION TEST.

U110D-LOST COMMUNICATION WITH SECURITY SIREN📷 1

⚡ Wiring diagram: Anti-theft Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

Continuously while the VTSS is armed.

Set conditions

 Set Condition:

If the Intrusion Transceiver Module does not receive messages from the Siren.

INTERMITTENT CONDITION📷 6

(A100) FUSED B+ CIRCUIT OPEN (Z908) GROUND CIRCUIT OPEN (D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO BATTERY (D96) SIREN SIGNAL CONTROL CIRCUIT OPEN (D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND SIREN INTRUSION TRANSCEIVER MODULE

Diagnostic test

1

INTERMITTENT DTC

With the scan tool, erase the current Intrusion Transceiver Module DTC's. Turn the ignition off. Arm the VTSS and wait 1 minute. Disarm the VTSS and turn the ignition on. Does the scan tool display the same DTC?

Yes Go To 2.

No The condition that caused this symptom is currently not present. Inspect the related wiring harness for a possible intermittent condition. Look for any chafed, pierced, pinched or partially broken wires.

Perform BODY VERIFICATION TEST - VER 1 .

2

(A100) FUSED B+ OPEN

Siren Connector Gain access to the VTSS Siren. Disconnect the Siren connector. Using a 12-volt test light connected to ground, check the (A100) Fused B(+) circuit in the Siren connector. Does the test light illuminate brightly?

Yes Go To 3.

No Repair the (A100) Fused B+ circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

3

(Z908) GROUND CIRCUIT OPEN

Connector Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuit at the siren connector. Does the test light illuminate brightly?

Yes Go To 4.

No Repair the (Z908) Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

4

FAULTY SIREN

Probes Use the DRBIII® and set up as follows: Use the Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and black test probes. Connect the scope input cable to the channel one connector on the DRBIII®. Attach the red and black leads and the cable to probe adapter to the scope input cable. Select DRBIII® Stand-alone. Select lab scope. Select Live. Select 12 volt square wave. Press F2 for Scope. Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again when complete. Disconnect the Siren connector. Connect the black lead to the chassis ground. Connect the red lead to the (D96) Siren Signal Control circuit in the Siren connector. Close all doors and arm the VTSS. Observe the voltage displayed on the DRBIII® Lab Scope. Is there a voltage square wave present 1 to 2 seconds?

Yes Connect a known good siren and try to reset the DTC. If the DTC does not reset the original siren needs to be replaced. If the DTC does reset replace the Intrusion Transceiver Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .

No Go To 5.

5

(D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO BATTERY

Disconnect the Siren harness connector. Measure the voltage of the (D96) Siren Signal Control circuit. Is there any voltage present?

Yes Repair the (D96) Siren Signal Control circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 .

No Go To 6.

6

(D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND

Disconnect the Siren harness connector. Disconnect the Intrusion Transceiver Module harness connector. Measure the resistance between ground and the (D96) Siren Signal Control circuit. Is the resistance above 5.0 ohms?

Yes Go To 7.

No Repair the (D96) Siren Signal Control circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 .

7

(D96) SIREN SIGNAL CONTROL CIRCUIT OPEN

Transceiver Module And Siren Connector Disconnect the Intrusion Transceiver Module harness connector. Measure the resistance of the (D96) Siren Signal Control circuit between the Intrusion Transceiver Module and the Siren connector. Is the resistance below 5.0 ohms?

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

No Repair the (D96) Siren Signal Control circuit for an open. Perform BODY VERIFICATION TEST - VER 1 .

U1416-IMPLAUSIBLE SECURITY SIREN SIGNAL RECEIVED

⚡ Wiring diagram: Anti-theft Circuit (1 of 2)

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

When monitored

While the VTSS is armed.

Set conditions

 Set Condition:

When the learned Siren information stored in the ITM does not match.

INTERMITTENT CONDITION

SIREN

Diagnostic test

1

DETERMINING IF DTC IS CURRENT

NOTE

Diagnose any related Communication DTC(s) before continuing.

With a scan tool, read and record DTC(s). With the scan tool, clear DTC(s). Turn the ignition off and remove the key from the ignition. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute. Disarm the VTSS. Using the scan tool, read ITM DTC(s). Does the DTC reset?

Yes Inspect wiring from ITM to Siren for an intermittent open condition. Check connector terminals for

push out, corrosion or loose terminal contact. If OK, replace the Siren. Perform BODY VERIFICATION TEST - VER 1 .

No Go to 2.

2. INTERMITTENT CONDITION

NOTE: Check for any of the follow conditions:

 Poor wire to terminal connection  Corroded terminals

 Pushed out or loose terminals

 Broken wire internal to the insulation

Were there any problems found?

Yes

Repair the wiring as necessary. Perform BODY VERIFICATION TEST - VER 1 .

No

DTC is not active at this time. Test complete.

SKREEM/SKIM VERIFICATION TEST

Additional wiring

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Diagnostic test

1

SKREEM/SKIM VERIFICATION

NOTE

When entering the PIN, care should be taken because the SKREEM will only allow 3 consecutive attempts to enter the correct PIN. If 3 consecutive incorrect PIN's are entered the SKREEM will Lock Out the scan tool. To exit Lock Mode, the ignition key must remain in the Run position for 1 hour. All accessories must be off. A battery charger connected to the battery during this time period is recommended.

NOTE

On vehicles equipped with a premium Tire Pressure Monitoring (TPM) system, when the SKREEM and/or the spare tire pressure sensor is replaced with a new unit, a diagnostic scan tool MUST be used to run a routine that allows the SKREEM to be programmed with the ID number and location of the spare tire pressure sensor mounted in the wheel of the spare tire. Follow the programming steps outlined in the diagnostic scan tool for "Learn Spare Tire Sensor ID" under "Miscellaneous Functions" for the "WCM/Wireless Control Module" menu item as appropriate. In addition, if the SKREEM is replaced, the spare tire must be dismounted from its wheel to access and note the ID number on the spare tire pressure sensor so that the ID code for that sensor can be programmed into the new SKREEM.

1

Reconnect the previously disconnected components and connectors.

2

Obtain the vehicle's unique Personal Identification Number (PIN) assigned to it's original

SKREEM. This number can be obtained from the vehicle invoice or from the DaimlerChrysler Customer Center (Phone 1-800-992-1997).

NOTE

If the PCM and the SKREEM are replaced at the same time, program the PCM VIN into the PCM first.

NOTE

During PCM/ECM replacement, use the following steps to ensure transfer of the secret key information from the SKREEM to the new PCM. The PCM stores this information only. If the SKREEM ever needs to be replaced, the secret key information can be retrieved from the PCM and then transferred to the SKREEM for security use.

3

First replace the PCM/ECM with the original WCM still connected to the vehicle.

4

Using the appropriate service information program the new PCM/ECM. (This will ensure the

Secret Key Transfer from the original WCM into the new PCM/ECM).

5

Now replace and program the WCM (if necessary). This will retain the Secret Key from the

PCM/ECM back into the new WCM.

6

With the scan tool, select Miscellaneous Functions, WCM/Wireless Control Module. Then select

the desired procedure and follow the display on the scan tool.

7

If the vehicle is equipped with Tire Pressure Monitoring System program the Placard Pressure

Values into the WCM/SKREEM.

8

Ensure all the customer's keys have been programmed into the new module if necessary.

9

With the scan tool, erase all DTCs. Perform 5 ignition key cycles, leaving the key on for at least 90

seconds per cycle.

10

With the scan tool, read SKREEM DTC(s).

NOTE

If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the SKREEM.

Are there any SKREEM DTC(s) present?

Yes Repair not complete, refer to the appropriate symptom.

No Repair is complete.