Pinpoint Test F: Poor Image Quality - Rear Video Camera

Parking Aid - Video

Pinpoint Test F: Poor Image Quality - Rear Video Camera

Normal Operation

A pair of shielded wires carries the video signal from the rear video camera to the Front Display Interface Module (FDIM) for vehicles with navigation, and the auto-dimming interior mirror for vehicles without navigation. The rear video system provides a clear image of objects to the rear of the vehicle.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Rear video camera

PINPOINT TEST F : POOR IMAGE QUALITY

NOTE:
Failure to disconnect the battery when instructed results in false resistance readings.

F1 CHECK AND CLEAN THE REAR VIDEO CAMERA LENS

- Clean and make sure the rear video camera lens is clear of any debris.

- Test the rear video camera system and verify the rear video camera image.

Is the rear video camera concern still present?

Yes
GO to F2.
No
The system is operating correctly at this time. The concern was caused by a dirty rear video camera lens.

F2 CHECK THE REAR VIDEO SIGNAL CIRCUITS INTEGRITY

- Ignition OFF.

- Disconnect: Auto-Dimming Interior Mirror (Without Navigation) C9039.

- Disconnect: FDIM (Front Display Interface Module) (With Navigation) C2123.

- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the auto-dimming interior mirror C9039-16, circuit RMP19 (BN/VT), harness side.






- For vehicles with navigation, measure the resistance between the FDIM (Front Display Interface Module) C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM (Front Display Interface Module) C2123-9, circuit RMP19 (BN/VT), harness side.






Is the resistance between 74 and 106 ohms?

Yes
GO to F3.
No
GO to F4.

F3 CHECK THE REAR VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN

- Disconnect: Negative Battery Cable.

- Disconnect: Rear Video Camera C4357.

- Measure the resistance between the rear video camera C4357-5, circuit GD120 (BK/GN), harness side and ground.






Is the resistance less than 5 ohms?

Yes
CONNECT the negative battery cable. GO to F4.
No
REPAIR the circuit. CONNECT the negative battery cable. TEST the system for normal operation.

F4 CHECK THE REAR VIDEO CAMERA SIGNAL CIRCUITS FOR A SHORT TO GROUND

- Disconnect: Rear Video Camera C4357.

- Measure the resistance between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and ground; and between the rear video camera C4357-3, circuit RMP19 (BN/VT), harness side and ground.






Are the resistances greater than 10,000 ohms?

Yes
GO to F5.
No
REPAIR the circuit in question. TEST the system for normal operation.

F5 CHECK THE REAR VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD

- Measure the resistance between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and the rear video camera C4357-6, circuit DMP19 (BK), harness side.






- Measure the resistance between the rear video camera C4357-3, circuit RMP19 (BN/VT), harness side and the rear video camera C4357-6, circuit DMP19 (BK), harness side.






Are the resistances greater than 10,000 ohms?

Yes
GO to F6.
No
REPAIR the circuit in question. TEST the system for normal operation.

F6 CHECK REAR VIDEO SIGNAL CIRCUITS FOR AN OPEN

- Connect a fused jumper wire between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and the rear video camera C4357-3, circuit RMP19 (BN/VT), harness side.






- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the auto-dimming interior mirror C9039-16, circuit RMP19 (BN/VT), harness side.






- For vehicles with navigation, measure the resistance between the FDIM (Front Display Interface Module) C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM (Front Display Interface Module) C2123-9, circuit RMP19 (BN/VT), harness side.






Is the resistance less than 5 ohms?

Yes
REMOVE the jumper wire. GO to F8.
No
REMOVE the jumper wire. GO to F7.

F7 CHECK REAR VIDEO (-) SIGNAL CIRCUIT FOR AN OPEN

- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-16, circuit RMP19 (BN/VT), harness side and the rear video camera C4357-3, circuit RMP19 (BN/VT), harness side.






- For vehicles with navigation, measure the resistance between the FDIM (Front Display Interface Module) C2123-9, circuit RMP19 (BN/VT), harness side and the video camera C4357-3, circuit RMP19 (BN/VT), harness side.






Is the resistance less than 5 ohms?

Yes
REPAIR circuit VMP19 (WH/GN). TEST the system for normal operation.
No
REPAIR circuit RMP19 (BN/VT). TEST the system for normal operation.

F8 CHECK FOR CORRECT REAR VIDEO CAMERA OPERATION

- Connect all disconnected connectors.

- Disconnect the rear video camera connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect the rear video camera connector and make sure it seats correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new rear video camera. REFER to Video Camera - Rear . TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.