Diagnosis And Testing - Rear Camera

The hardwired circuits of the Rear View Camera (RVC) and those between the RVC and the Radio may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods will not prove conclusive in the diagnosis of the RVC or the radio. The most reliable, efficient and accurate means to diagnose the electronic controls and communication related to radio operation, as well as the retrieval or erasure of a DTC requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

WARNING:

To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

NOTE:

Be certain to confirm the following prior to attempting any further diagnosis or testing of the RVC. Use a diagnostic scan tool to confirm the rear view camera is setup in the vehicle configuration.

CONDITION	POSSIBLE CAUSES	CORRECTION
NO VIDEO DISPLAY IN RADIO - DOES NOT DISPLAY CHECK ENTIRE SURROUNDINGS MESSAGE BRIEFLY AFTER SHIFTING INTO REVERSE	1. Incorrect radio software.	1. Check to be certain that the radio has the latest software update installed. Install the radio software update if required.
	2. Ineffective radio fuse.	2. Test and replace the radio fuses if required.
	3. Ineffective radio ground circuit.	3. Check for loose or damaged wiring connections at the radio. Test and repair the open radio ground circuit if required.
	4. Ineffective radio feed circuit.	4. Check for loose or damaged wiring connections at the radio. Test and repair the open radio feed circuit if required.
	5. Ineffective radio inputs or outputs.	5. Use a diagnostic scan tool to test the radio inputs and outputs including those received over the CAN data bus. Refer to the appropriate diagnostic information.
	6. Ineffective radio.	6. Use a diagnostic scan tool to test the radio. Refer to the appropriate diagnostic information.
NO CAMERA IMAGE IN RADIO VIDEO DISPLAY AND NO BACKUP LAMPS IN REVERSE	1. Backup lamps inoperative.	1. Test and repair the open backup lamp switch output circuit between the right and left tail lamps if required.
	2. Both backup lamps inoperative.	2. Test and repair the open backup lamp switch output circuit between the BODY CONTROL MODULE (BCM) and the tail lamps if required.
	3. Ineffective BCM inputs or outputs.	3. Use a diagnostic scan tool to test the BCM inputs and outputs. Refer to the appropriate diagnostic information.
NO CAMERA IMAGE IN RADIO VIDEO DISPLAY - DOES DISPLAY CHECK ENTIRE SURROUNDINGS MESSAGE BRIEFLY AFTER SHIFTING INTO REVERSE AND BACKUP LAMPS DO OPERATE	1. Ineffective camera ground circuit.	1. Check for loose or damaged wiring connections at the camera, Tailgate light bar and Tailgate. Test and repair the open camera ground circuit if required.
	2. Ineffective camera feed (backup lamp switch output) circuit.	2. Check for loose or damaged wiring connections at the camera, Tailgate light bar and upper Tailgate opening header. Test and repair the open camera feed (backup lamp switch output) circuit if required.
	3. Ineffective camera shield circuit.	3. Check for loose or damaged wiring connections at the camera, Tailgate light bar, upper Tailgate opening header, right cowl side inner panel and radio. Test and repair the open or shorted camera shield circuit if required.
	4. Ineffective camera return circuit.	4. Check for loose or damaged wiring connections at the camera, Tailgate light bar, upper Tailgate opening header, right cowl side inner panel and radio. Test and repair the open or shorted camera feed circuit if required.
	5. Ineffective camera signal circuit.	5. Check for loose or damaged wiring connections at the camera, Tailgate light bar, upper Tailgate opening header, right cowl side inner panel and radio. Test and repair the open or shorted camera signal circuit if required.
	6. Ineffective camera.	6. Replace the ineffective camera if required.