AudioVideo Systems - Service Information

AUDIO/VIDEO - SERVICE INFORMATION

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AUDIO

Several combinations of radio receivers and speaker systems are offered on this model. The audio system uses an ignition switched source of battery current so that the system will only operate when the ignition switch is in the RUN or ACCESSORY positions.

The audio system includes the following components:

 Antenna  Power amplifier

 Radio noise suppression components

 Radio receiver

 Remote radio switches (if equipped)

 Speakers

 Subwoofer

Certain functions and features of the audio system rely upon resources shared with other electronic modules in the vehicle over the Controlled Area Network (CAN). The data bus network allows the sharing of sensor information. For diagnosis of these electronic modules or of the data bus network, the use of a scan tool and the proper Diagnostic Procedures information is recommended.

Operation

The audio system components are designed to provide audio entertainment and information through the reception, tuning and amplification of locally broadcast radio signals in both the Amplitude Modulating (AM) and Frequency Modulating (FM) commercial frequency ranges.

The audio system components operate on battery current received through a fuse in the Totally Integrated Power Module (TIPM) on a fused ignition switch output (RUN-ACC) circuit so that the system will only operate when the ignition switch is in the Run or Accessory positions.

On vehicles that are equipped with the optional remote radio switches, the Cab Compartment Node (CCN) receives hard wired resistor multiplexed inputs from the remote radio switches. The programming in the CCN allows it to process those inputs and send the proper messages to the radio receiver over the Controlled Area Network (CAN) to control the radio volume up or down, station seek up or down, preset station advance, and mode advance functions.

Refer to the owner's manual for more information on the features, use and operation of each of the available audio systems.

AUDIO SYSTEM

Any diagnosis of the Audio system should begin with the use of scan tool. For information on the use of the scan tool, refer to the appropriate Diagnostic information.

Refer to the appropriate wiring information.

WARNING: Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury.

CONDITION POSSIBLE CAUSES CORRECTION

NO AUDIO 1. Fuse faulty. 1. Check radio fuse and Ignition-Off Draw (IOD) fuse in Totally Integrated Power Module (TIPM). Replace fuses, if required. - 2. Radio connector faulty. 2. Check for loose or corroded radio connector. Repair, if required. - 3. Wiring faulty. 3. Check for shorted or open wires. Repair wiring, if required. - 4. Radio ground faulty. 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required.

-	5. Speakers faulty.	5. Replace speaker as necessary.
-	6. Radio faulty.	6. Refer to appropriate Diagnostic Service

Information. NO RADIO DISPLAY 1. Fuse faulty. 1. Check radio fuse and Ignition-Off Draw (IOD) fuse in Junction Block (JB). Replace fuses, if required. - 2. Radio connector faulty. 2. Check for loose or corroded radio connector. Repair, if required. - 3. Wiring faulty. 3. Check for battery voltage at radio connector. Repair wiring, if required. - 4. Radio ground faulty. 4. Check for continuity between radio

chassis and a known good ground. There should be continuity. Repair ground, if required. - 5. Radio faulty. 5. Refer to appropriate Diagnostic Service Information.

POOR RADIO RECEPTION 1. Antenna faulty.                        1. See DIAGNOSIS AND TESTING.
                     2. Radio ground faulty.                   2. Check for continuity between radio

chassis and a known good ground. There should be continuity. Repair ground, if required.

                                3. Radio noise suppression     3. Repair or replace ground strap as
                                faulty.                        necessary.
                                4. Radio faulty.               4. Refer to appropriate Diagnostic Service

Information.

SOUND DISTORTION	1. Door trim panel loose or	1. Inspect door trim panel and correct as
(VIBRATION FROM	missing fasteners.	necessary. Replace any missing fasteners.

BUZZING - HUMMING)

-                   2. Water shield loose or     2. Inspect water shield and adjust as
                    misaligned.                  required.
-                   3. Items placed in door trim 3. Remove items from door trim panel.

panel map pockets vibrating Ensure that vibration is no longer present. or moving from side to side.

NO COMPACT DISC/DVD 1. Faulty CD/DVD.            1. Insert known good CD/DVD and test
OPERATION                                        operation.
                    2. Foreign material on       2. Clean CD/DVD and test operation.

CD/DVD.

3. Condensation on CD/DVD 3. Allow temperature of vehicle interior to

                    or optics.                   stabilize and test operation.
                    4. Faulty CD/DVD player.     4. Refer to appropriate Diagnostic Service

Information.

MANUAL DISC EJECT-NAVIGATION RADIO

1. Ensure all fuses are installed in the vehicle to operate accessories. 2. Turn ignition to ACC and power on radio. 3. Press OPEN/CLOSE button on radio and verify that disc will not eject automatically. 4. If disc will not eject automatically, use the following combination of buttons to manually eject disc:  With display open press and hold NAV button on right side.

 Press SEEK UP and SEEK DOWN at the same time on left side.

5. Remove the disc from the radio.

DOMESTIC

All models feature a roof-mounted active mast antenna. This is a combination antenna that receives both AM/FM and satellite digital audio. The antenna cables are routed along the left side of the under the headliner, down the A-pillar to the instrument panel. For antenna removal, see REMOVAL. For antenna installation, see

TEST 1

Test 1 determines if the antenna mast is insulated from ground. Proceed as follows:

1. Disconnect and isolate the antenna coaxial cable connector behind the right side kick panel. 2. Touch one ohmmeter test lead to the tip of the antenna mast. Touch the other test lead to known ground. Check the ohmmeter reading for continuity. 3. There should be no continuity. If OK, go to Test 2. If not OK, replace the faulty antenna body and cable.

TEST 2

Test 2 checks the antenna conductor components for an open circuit. This test should be performed first on the entire antenna circuit, from the antenna mast to the center conductor of the coaxial cable connector at the radio. If an open circuit is detected, each of the three antenna conductor components (antenna mast, antenna body and cable, instrument panel antenna cable) should be isolated and tested individually to locate the exact component that is the source of the open circuit. To begin this test, proceed as follows:

1. Disconnect the instrument panel antenna cable coaxial connector from the back of the radio. 2. Touch one ohmmeter test lead to the tip of the antenna mast. Touch the other test lead to the center conductor pin of the instrument panel antenna cable coaxial connector for the radio. Check the ohmmeter reading for continuity. 3. There should be continuity. The ohmmeter should register only a fraction of an ohm resistance. High or infinite resistance indicates a damaged or open antenna conductor. If OK, go to Test 3. If not OK, isolate and test each of the individual antenna conductor components. Replace only the faulty antenna conductor component.

TEST 3

Test 3 checks the condition of the vehicle body ground connection. To begin this test, proceed as follows:

1. This test must be performed with the battery positive cable disconnected from the battery. Disconnect and isolate both battery cables, negative cable first. 2. Reconnect the battery negative cable.

3. Touch one ohmmeter test lead to a good clean ground point on the vehicle fender. Touch the other test lead to the battery negative terminal post. Check the ohmmeter reading for continuity. 4. There should be continuity. The ohmmeter should register less than one ohm resistance. High or infinite resistance indicates a loose, corroded, or damaged connection between the battery negative terminal and the vehicle body. If OK, go to Test 4. If not OK, check the battery negative cable connection to the vehicle body and the radio noise suppression ground strap connections to the engine and the vehicle body for being loose or corroded. Clean or tighten these connections as required.

TEST 4

Test 4 checks the condition of the connection between the antenna coaxial cable shield and the vehicle body ground as follows:

1. Disconnect and isolate the antenna coaxial cable connector behind the right side kick panel. 2. Touch one ohmmeter test lead to a good clean ground point on the vehicle fender. Touch the other test lead to the outer crimp on the antenna coaxial cable connector. Check the ohmmeter reading for continuity. 3. There should be continuity. The ohmmeter should register less than one ohm resistance. High or infinite resistance indicates a loose, corroded, or damaged connection between the antenna body and the vehicle body or between the antenna body and the antenna coaxial cable shield. If not OK, clean the antenna body to fender mating surfaces and tighten the antenna cap nut to specifications. 4. Check the resistance again with an ohmmeter. If the resistance is still more then one ohm, replace the faulty antenna body and cable.

HDD.

1. Turn the ignition to RUN, engine OFF. 2. Power on the external HDD. 3. Connect the external HDD to the radio using the USB (Universal Serial Bus) cable. The radio display will change to the "Manage My Files" screen. 4. Connect the scan tool and preform the following steps to place the radio into "Dealership Mode": ECU View Radio Misc. Functions Service Mode Start Next 5. Follow the on screen instructions on the radio to back up the radio HDD.

STANDARD

The standard equipment speaker system includes speakers in six locations. One 6.4 centimeter (2.50 inch) diameter speaker is installed on each end of the instrument panel top pad. One 16.5 centimeter (6.5 inch) full- range speaker is located in each front door. There is also one full-range 16.5 centimeter (6.5 inch) diameter full- range speaker located in each rear door.

PREMIUM

The optional premium speaker system features nine Premium model speakers. Each of the standard speakers are replaced with Premium model speakers. One 6.4 centimeter (2.50 inch) diameter speaker is installed on each end of the instrument panel top pad. One 16.5 centimeter (6.5 inch) Premium woofer is located in each front door. There is also one full-range 16.5 centimeter (6.5 inch) diameter Premium full-range speaker located in each rear door as well as one 1.9 centimeter (.75 inch) tweeter in each rear door. A 20.3 centimeter (8 inch) subwoofer is located in the rear cargo area. The premium speaker system also includes a power amplifier rated at 368 watts.

VIDEO SCREEN📷 3

Removal

Disconnect and isolate the battery negative cable.

Remove the video screen mounting fasteners.

Remove the video screen and disconnect the electrical connectors.

Installation

Connect the electrical connectors and snap the video screen in position.

Install the video screen mounting fasteners.

Connect the battery negative cable.