Diagnosis And Testing - Rear Camera

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The hard wired 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, details of 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 and 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, 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 additional diagnosis or testing of the RVC. Use a diagnostic scan tool to confirm the rear view camera is setup in the vehicle configuration.

NOTE:

Before proceeding with the diagnostic steps below, use the scan tool to check the Body Control Module (BCM) for any camera or Local Interface Network (LIN) bus related Diagnostic Trouble Codes (DTC). Repair as necessary.

CONDITION	POSSIBLE CAUSES	CORRECTION
VIDEO IMAGE IS BLURRY OR OBSTRUCTIVE	1. Dirt, smear, fingerprints on RVC lens.	1. Inspect lens for foreign material and clean lens as required using the lens cleaning procedure.
	2. Ineffective camera shield circuit.	2. Check for loose or damaged wiring connections at the camera, light bar, upper liftgate opening header, right cowl side inner panel and radio. Test and repair the open or shorted camera shield circuit, if required.
	3. Moisture buildup on the inside of the lens.	3. Replace the ineffective camera as required.
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) 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 - 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, light bar and liftgate. Test and repair the open camera ground circuit, if required.
	2. Ineffective camera feed (RUN relay) circuit.	2. Check for loose or damaged wiring connections at the camera, light bar and upper liftgate opening header. Test and repair the open camera feed (RUN relay) circuit, if required.
	3. Ineffective camera return circuit.	3. Check for loose or damaged wiring connections at the camera, light bar, upper liftgate opening header, right cowl side inner panel and radio. Test and repair the open or shorted camera feed circuit, if required.
	4. Ineffective camera signal circuit.	4. Check for loose or damaged wiring connections at the camera, light bar, upper liftgate opening header, right cowl side inner panel and radio. Test and repair the open or shorted camera signal circuit, if required.
	5. Ineffective camera.	5. Replace the ineffective camera, if required.
NO GRIDLINES BEING OVERLAID ON IMAGE	1. Setting is not checked in the radio settings screen.	1. Adjust setting in radio settings screen.
	2. Message received is incorrect.	2. Use a diagnostic scan tool to check for DTCs within other modules. Refer to appropriate diagnostic information for that DTC.
	3. LIN connection is broken.	3. Refer to wiring diagrams and repair wiring as necessary.