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Pinpoint Test I: Poor Image Quality




Parking Aid - Video

Pinpoint Tests

Pinpoint Test I: Poor Image Quality

Normal Operation

For vehicles without navigation, with the gear selector in REVERSE (R) position, a reverse voltage signal is sent to the auto-dimming interior mirror and rear video camera supplying power to the system. The video camera signal is sent to the auto-dimming interior mirror. The video signal from the video camera displays an image on the LH side of the auto-dimming interior mirror.

For vehicles with navigation, with the gear selector in the REVERSE (R) position, a reverse voltage signal is sent to the video camera supplying power to the camera. A reverse signal is also sent from the Instrument Panel Cluster (IPC) to the Audio Control Module (ACM) over the Medium Speed Controller Area Network (MS-CAN), enabling the system. The video signal from the video camera displays an image on the Front Display Interface Module (FDIM).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Video camera



PINPOINT TEST I: POOR IMAGE QUALITY

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

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I1 CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN


- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Disconnect: Video Camera C4357 Or C4360.
- For vehicles with a spoiler mounted reverse camera, measure the resistance between the video camera C4357-3, circuit GD149 (BK/GY), harness side and ground.




- For vehicles with a decklid mounted reverse camera, measure the resistance between the video camera C4360-5, circuit GD149 (BK/GY), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to I2.

No
REPAIR the circuit. TEST the system for normal operation.

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I2 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO GROUND WITH THE AUTO-DIMMING INTERIOR MIRROR (WITHOUT NAVIGATION) OR THE FDIM (WITH NAVIGATION)
DISCONNECTED


- Disconnect: Auto-Dimming Interior Mirror C9039 (Without Navigation) or FDIM C2123 (With Navigation).
- For vehicles with a spoiler mounted reverse camera, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and ground; and between the video camera C4357-7, circuit RMP19 (BN/VT), harness side and ground.




- For vehicles with a decklid mounted reverse camera, measure the resistance between the video camera C4360-4, circuit VMP19 (WH/GN), harness side and ground; and between the video camera C4360-3, circuit RMP19 (BN/VT), harness side and ground.




- Are the resistances greater than 10,000 ohms?

Yes
GO to I3.

No
REPAIR the circuit in question. TEST the system for normal operation.

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I3 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD


- For vehicles with a spoiler mounted reverse camera, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and the video camera C4357-4, circuit DMP19 (BK), harness side.




- For vehicles with a spoiler mounted reverse camera, measure the resistance between the video camera C4357-7, circuit RMP19 (BN/VT), harness side and the video camera C4357-4, circuit DMP19 (BK), harness side.




- For vehicles with a decklid mounted reverse camera, measure the resistance between the video camera C4360-4, circuit VMP19 (WH/GN), harness side and the video camera C4360-6, circuit DMP19 (BK), harness side.




- For vehicles with a decklid mounted reverse camera, measure the resistance between the video camera C4360-3, circuit RMP19 (BN/VT), harness side and the video camera C4360-6, circuit DMP19 (BK), harness side.




- Is the resistance greater than 10,000 ohms?

Yes
GO to I4.

No
REPAIR the circuit in question. TEST the system for normal operation.

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I4 CHECK THE VIDEO SIGNAL CIRCUITS FOR AN OPEN


- Ignition OFF.
- Disconnect: FDIM (With Navigation) C2123 or Auto-Dimming Interior Mirror (Without Navigation) C9039.
- For vehicles with a spoiler mounted reverse camera, connect a fused jumper wire between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and the video camera C4357-7, circuit RMP19 (BN/VT), harness side.




- For vehicles with a decklid mounted reverse camera, connect a fused jumper wire between the video camera C4360-4, circuit VMP19 (WH/GN), harness side and the video camera C4360-3, 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 C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM C2123-9, circuit RMP19 (BN/VT), harness side.




- Are the resistances less than 5 ohms?

Yes
REMOVE the jumper wire. CARRY OUT the video camera component test. If the camera is inoperative, INSTALL a new video camera. REFER to Video Camera Service and Repair. TEST the system for normal operation.

No
REMOVE the jumper wire. GO to I5.

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I5 CHECK THE VIDEO SIGNAL CIRCUIT (+) FOR AN OPEN


- For vehicles without navigation with a spoiler mounted reverse camera, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the video camera C4357-6, circuit VMP19 (WH/GN), harness side.




- For vehicles with navigation with a spoiler mounted reverse camera, measure the resistance between the FDIM C2123-3, circuit VMP19 (WH/GN), harness side and the video camera C4357-6, circuit VMP19 (WH/GN), harness side.




- For vehicles without navigation with a decklid mounted reverse camera, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the video camera C4360-4, circuit VMP19 (WH/GN), harness side.




- For vehicles with navigation with a decklid mounted reverse camera, measure the resistance between the FDIM C2123-3, circuit VMP19 (WH/GN), harness side and the video camera C4360-4, circuit VMP19 (WH/GN), harness side.




- Is the resistance less than 5 ohms?

Yes
REPAIR circuit RMP19 (BN/VT). TEST the system for normal operation.

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

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