Pinpoint Test K: Poor Image Quality

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

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

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.
  
  Fig 1: Measuring Resistance Between Video Camera C4357-3 & Ground
  Courtesy of FORD MOTOR CO.
- For Milan, measure the resistance between the video camera C4234-6, circuit (BK), harness side and ground.
  
  Fig 2: Measuring Resistance Between Video Camera C4234-6 & Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to K2.
- No: REPAIR the circuit. TEST the system for normal operation.
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.
  
  Fig 3: Measuring Resistance Between Video Camera C4357-6 & Ground
  Courtesy of FORD MOTOR CO.
- For Milan, measure the resistance between the video camera C4234-4, circuit (WH), harness side and ground; and between the video camera C4234-5, circuit (BK), harness side and ground.
  
  Fig 4: Measuring Resistance Between Video Camera C4234-4 & Ground
  Courtesy of FORD MOTOR CO.
- Are the resistances greater than 10,000 ohms?
- Yes: GO to K4.
- No: GO to K3.
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.
  
  Fig 5: Measuring Resistance Between Video Camera C4357-6 & Ground
  Courtesy of FORD MOTOR CO.
- For Milan, measure the resistance between the video camera C4234-4, circuit (WH), harness side and ground; and between the video camera C4234-5, circuit RMP19 (BK), harness side and ground.
  
  Fig 6: Measuring Resistance Between Video Camera C4234-4 & Ground
  Courtesy of FORD MOTOR CO.
- Are the resistances greater than 10,000 ohms?
- Yes: For vehicles without navigation, INSTALL a new auto-dimming interior mirror. Refer to INSTALLATION .
  For vehicles with navigation, INSTALL a new FDIM . Refer to REMOVAL AND INSTALLATION (Fusion, Milan) and REMOVAL AND INSTALLATION (MKZ) . TEST the system for normal operation.
- No: REPAIR the circuit in question. TEST the system for normal operation.
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.
  
  Fig 7: Measuring Resistance Between Video Camera C4357-6 & C4357-4
  Courtesy of FORD MOTOR CO.
- 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.
  
  Fig 8: Measuring Resistance Between Video Camera C4357-7 & C4357-4
  Courtesy of FORD MOTOR CO.
- For Milan, measure the resistance between the video camera C4234-4, circuit (WH), harness side and the video camera C4234-2, circuit (BK), harness side.
  
  Fig 9: Measuring Resistance Between Video Camera C4234-4 & C4234-2
  Courtesy of FORD MOTOR CO.
- For Milan, measure the resistance between the video camera C4234-5, circuit (BK), harness side and the video camera C4234-2, circuit (BK), harness side.
  
  Fig 10: Measuring Resistance Between Video Camera C4234-5 & C4234-2
  Courtesy of FORD MOTOR CO.
- Are the resistances greater than 10,000 ohms?
- Yes: GO to K5.
- No: REPAIR the circuit in question. TEST the system for normal operation.
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.
  
  Fig 11: Connecting Fused Jumper Wire Between Video Camera C4357-6 & C4357-7
  Courtesy of FORD MOTOR CO.
- For Milan, connect a fused jumper wire between the video camera C4234-4, circuit (WH), harness side and the video camera C4234-5, circuit (BK), harness side.
  
  Fig 12: Connecting Fused Jumper Wire Between Video Camera C4234-4 & C4234-5
  Courtesy of FORD MOTOR CO.
- 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.
  
  Fig 13: Measuring Resistance Between Auto-Dimming Interior Mirror C9039-8 & C9039-16
  Courtesy of FORD MOTOR CO.
- 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.
  
  Fig 14: Measuring Resistance Between FDIM C2410-3 & C2410-9
  Courtesy of FORD MOTOR CO.
- 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 Removal and Installation . TEST the system for normal operation.
- No: REMOVE the jumper wire. GO to K6.

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.

TERMINAL RESISTANCE REFERENCE TABLE

Vehicle	Positive Meter Lead	Negative Meter Lead	Circuit
Fusion (without navigation)	C9039-8	C4357-6	VMP19 (WH/GN)
Fusion (with navigation)	C2410-3	C4357-6	VMP19 (WH/GN)
Milan (without navigation)	C9039-8	C4234-4	VMP19 (WH/GN)/(WH)
Milan (with navigation)	C2410-3	C4234-4	VMP19 (WH/GN)/(WH)
MKZ	C2410-3	C4357-6	VMP19 (WH/GN)

Fig 15: Measuring Resistance Between Auto-Dimming Interior Mirror Or FDIM & Video Camera

Courtesy of FORD MOTOR CO.

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.