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, wire harness routing and retention, connector pin-out information, and location views for the various wire harness connectors, splices, and grounds. For proper wire repair, and connector repair procedures. Refer to STANDARD PROCEDURE or REMOVAL or INSTALLATION .

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 and the retrieval or erasure of a Diagnostic Trouble Code (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 before attempting any additional diagnosis or testing of the RVC. Use a diagnostic scan tool to confirm the rearview camera is set up in the vehicle configuration.

REARVIEW CAMERA DIAGNOSIS
CONDITION	POSSIBLE CAUSES	CORRECTION
VIDEO IMAGE IS BLURRY OR OBSTRUCTIVE	1. Dirt, smear, fingerprints on RVC lens.	1. Inspect the lens for foreign material, and clean the lens as required, using the lens cleaning procedure.
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 Controller Area Network (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, liftgate or rear door light bar, and liftgate or rear door. 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, liftgate or rear door light bar, and upper liftgate or rear door 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, liftgate or rear door light bar, upper liftgate or rear door 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, liftgate or rear door light bar, upper liftgate or rear door 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, liftgate or rear door light bar, upper liftgate or rear door 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.