PINPOINT TEST H: POOR IMAGE QUALITY - VEHICLES WITH A 8 in (203.2 mm) TOUCHSCREEN

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

H1 CHECK AND CLEAN THE REAR VIDEO CAMERA LENS
- Clean and make sure the rear video camera lens is clear of any debris.
- Test the video camera system and verify the video camera image.
Is the video camera concern still present?
- Yes : GO to H2.
- No : The system is operating correctly at this time. The concern was caused by a dirty video camera lens.
H2 CHECK THE VIDEO SIGNAL CIRCUITS INTEGRITY
- Disconnect: APIM C2383 .
- Measure the resistance between the APIM C2383-14 , circuit VMP19 (WH/GN), harness side and the APIM C2383-15 , circuit RMP19 (BN/VT), harness side.
  
  Fig 1: Measuring Resistance Between APIM C2383-14 And 15, Circuit VMP19 (WH/GN) And Circuit RMP19 (BN/VT)
  Courtesy of FORD MOTOR CO.
Is the resistance between 74 and 106 ohms?
- Yes : GO to H3.
- No : GO to H6.
H3 CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Video Camera C4357 .
- Measure the resistance between the video camera C4357-5 , circuit GD143, harness side and ground.
  
  Fig 2: Measuring Resistance Between Video Camera C4357-5, Circuit GD143 (BK/VT) And Ground
  Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?
- Yes : GO to H4.
- No : REPAIR the circuit.
H4 CHECK THE VIDEO CAMERA SIGNAL CIRCUITS FOR A SHORT TO GROUND
- Measure the resistance between the video camera C4357-4 , circuit VMP19 (WH/GN), harness side and ground; and between the video camera C4357-3 , circuit RMP19 (BN/VT), harness side and ground.
  
  Fig 3: Measuring Resistance Between Video Camera C4357-4, Circuit VMP19 (WH/GN) And Ground
  Courtesy of FORD MOTOR CO.
Are the resistances greater than 10, 000 ohms?
- Yes : GO to H5.
- No : REPAIR the circuit in question. TEST the system for normal operation.
H5 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD
- Measure the resistance between the video camera C4357-4 , circuit VMP19 (WH/GN), harness side and the video camera C4357-6 , circuit DMN19 (shield), harness side.
  
  Fig 4: Measuring Resistance Between Video Camera C4357-4 And 6, Circuit VMP19 (WH/GN) And Circuit DMN19 (Shield)
  Courtesy of FORD MOTOR CO.
  - Measure the resistance between the video camera C4357-3 , circuit RMP19 (BN/VT), harness side and the video camera C4357-6 , circuit DMN19 (shield), harness side.
    
    Fig 5: Measuring Resistance Between Video Camera C4357-3 And 6, Circuit RMP19 (BN/VT) And Circuit DMN19 (Shield)
    Courtesy of FORD MOTOR CO.
  Are the resistances greater than 10, 000 ohms?
  - Yes : GO to H6.
  - No : REPAIR the circuit in question. TEST the system for normal operation.
H6 CHECK VIDEO SIGNAL CIRCUITS FOR AN OPEN
- Connect a fused jumper wire between the video camera C4357-4 , circuit VMP19 (WH/GN), harness side and the video camera C4357-3 , circuit RMP19 (BN/VT), harness side.
Fig 6: Connecting Fused Jumper Wire Between Video Camera C4357-3 And 4, Circuit VMP19 (WH/GN) And Circuit RMP19 (BN/VT)
Courtesy of FORD MOTOR CO.
- Measure the resistance between the APIM C2383-14 , circuit VMP19 (WH/GN), harness side and the APIM C2383-15 , circuit RMP19 (BN/VT), harness side.
  
  Fig 7: Measuring Resistance Between APIM C2383-14 And 15, Circuit VMP19 (WH/GN) And Circuit RMP19 (BN/VT)
  Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?
- Yes : REMOVE the jumper wire. GO to H8.
- No : REMOVE the jumper wire. GO to H7.
H7 CHECK VIDEO (-) SIGNAL CIRCUIT FOR AN OPEN
- Measure the resistance between the video camera C4357-3 , circuit RMP19 (BN/VT), harness side and the APIM C2383-15 , circuit RMP19 (BN/VT), harness side.
  
  Fig 8: Measuring Resistance Between Video Camera C4357-3, Circuit RMP19 (BN/VT), APIM C2383-15 And Circuit RMP19 (BN/VT)
  Courtesy of FORD MOTOR CO.
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.
H8 CHECK VIDEO SHIELD CIRCUIT FOR AN OPEN
- Measure the resistance between and the video camera C4357-6 , circuit DMN 19 (shield), harness side and the APIM C2383-33 , circuit DMN19 (shield), harness side.
  
  Fig 9: Measuring Resistance Between And Video Camera C4357-6, APIM C2383-33 And Circuit DMN19 (Shield)
  Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?
- Yes : GO to H9.
- No : REPAIR the circuit. TEST the system for normal operation.
H9 CHECK FOR CORRECT VIDEO CAMERA OPERATION
- Connect all disconnected connectors.
- Disconnect the video camera connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the 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 video camera. REFER to VIDEO CAMERA . 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.