Pinpoint Test K: Poor Image Quality
Parking Aid - Video
Pinpoint Test K: 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 supplying power to the display in the mirror. 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 signal is sent from the 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).
Poor image quality may be due to a loose ground or shield circuit in the camera wiring.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Video camera
PINPOINT TEST K: POOR IMAGE QUALITY
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery, Mounting and Cables Battery Disconnect.
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K1 CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- For Fusion/MKZ, measure the resistance between the video camera C4357-3, circuit GD171 (BK/GY), harness side and ground.
- For Milan, measure the resistance between the video camera C4234-6, circuit (GN), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to K2.
No
REPAIR the circuit. TEST the system for normal operation.
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K2 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO GROUND
- For Fusion/MKZ, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and ground and the video camera C4357-7, circuit RMP19 (BN/VT), harness side and ground.
- For Milan, measure the resistance between the video camera C4234-4, circuit VMP19 (WH), harness side and ground; and between the video camera C4234-5, circuit RMP19 (BK), harness side and ground.
- Are the resistances greater than 10,000 ohms?
Yes
GO to K4.
No
GO to K3.
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K3 CHECK THE AUTO-DIMMING INTERIOR MIRROR (WITHOUT NAVIGATION) OR FDIM (WITH NAVIGATION) FOR AN INTERNAL SHORT
- Disconnect: Auto-Dimming Interior Mirror C9039 (Without Navigation) or FDIM C2410 (With Navigation).
- For Fusion/MKZ, measure the resistance between the video camera C4357-6, circuit VMP19 (WH/GN), harness side and ground and the video camera C4357-7, circuit RMP19 (BN/VT), harness side and ground.
- For Milan, measure the resistance between the video camera C4234-4, circuit VMP19 (WH), harness side and ground; and between the video camera C4234-5, circuit RMP19 (BK), harness side and ground.
- Are the resistances greater than 10,000 ohms?
Yes
For vehicles without navigation, INSTALL a new auto-dimming interior mirror. REFER to Rear View Mirrors Interior Rear View Mirror.
For vehicles with navigation, INSTALL a new FDIM. REFER to Information and Entertainment Systems Service and Repair. TEST the system for normal operation.
No
REPAIR the circuit in question. TEST the system for normal operation.
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K4 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD
- For Fusion/MKZ, 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 Fusion/MKZ, 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 Milan, measure the resistance between the video camera C4234-4, circuit VMP19 (WH), harness side and the video camera C4234-2, circuit DMP19 (BK), harness side.
- For Milan, measure the resistance between the video camera C4234-5, circuit RMP19 (BK), harness side and the video camera C4234-2, circuit DMP19 (BK), harness side.
- Are the resistances greater than 10,000 ohms?
Yes
GO to K5.
No
REPAIR the circuit in question. TEST the system for normal operation.
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K5 CHECK VIDEO SIGNAL CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: Auto-Dimming Interior Mirror (Without Navigation) C9039.
- Disconnect: FDIM C2410 (With Navigation) .
- For Fusion/MKZ, 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 Milan, connect a fused jumper wire between the video camera C4234-4, circuit VMP19 (WH), harness side and the video camera C4234-5, circuit RMP19 (BK), 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 C2410-3, circuit VMP19 (WH/GN), harness side and the FDIM C2410-9, 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. Parking Aid - Video
No
REMOVE the jumper wire. GO to K6.
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K6 CHECK VIDEO SIGNAL CIRCUIT (+) FOR AN OPEN
- Measure the resistance between the auto-dimming interior mirror (without navigation) or the FDIM (with navigation), harness side and the video camera, 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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