Composite Image Signal Circuit Inspection

CHECK COMPOSITE IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear view camera control unit connector and display connector.
3. Check continuity between rear view camera control unit harness connector B236 terminal 12 (LG) and display harness connector M82 terminal 9 (LG).
  1. 12 (LG) - 9 (LG): Continuity should exist.
4. Check continuity between rear view camera control unit harness connector B236 terminal 12 (LG) and ground.
  1. 12 (LG) - Ground: Continuity should not exist.
  Fig 1: Checking Composite Image Signal Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 2.
2. NG: Repair harness or connector.
CHECK COMPOSITE SIGNAL GROUND CIRCUIT
Check continuity between rear view camera control unit B236 harness connector terminal 11 and display harness connector M82 terminal 11.
1. 11 - 11: Continuity should exist. .
OK or NG
1. OK: GO TO 3. NG: Repair harness or connector.
Fig 2: Checking Composite Signal Ground Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK COMPOSITE IMAGE OUTPUT SIGNAL
1. Connect rear view camera connector and display connector.
2. Turn ignition switch ON.
3. Shift A/T selector lever to "R" position.
4. Check voltage signal between rear view camera control unit harness connector B236 terminals 12 (LG) and 11.
  
  Fig 3: Identifying Harness Connector B236 Terminals 12 (Lg) Graph
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Composite Image Output Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Composite image signal circuit is OK. Return to "SYMPTOM CHART ".
2. NG: Replace rear view camera control unit.