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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1231 (Driver Information System) >> Rear View Monitor >> Rear View Is Not Displayed With The A/T Selector Lever In R Position

Rear View Is Not Displayed With The A/T Selector Lever In R Position

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. BACK-UP LAMP INSPECTION 
    1. Turn ignition switch ON.
    2. Shift A/T selector lever to R position.

    Does back-up lamp illuminate? 

    • YES: GO TO 2.
    • NO: Check back-up lamp system. Refer to "BACK-UP LAMP ".
  2. CHECK REVERSE POSITION INPUT SIGNAL 

    With CONSULT-II 

    Select "DATA MONITOR" of "REARVIEW CAMERA". Operate ignition switch with "R POSI SIG" of "DATA MONITOR" and check operate status.

    Fig 1: CONSULT-II - Identifying R POSI SIG ON
    G02385914Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch OFF.
    2. Disconnect rear view camera control unit connector.
    3. Turn ignition switch ON.
    4. Shift A/T selector lever to R position.
    5. Check voltage between rear view camera control unit harness connector B73 terminal 4 (G/W) and ground.
      • Battery voltage should exist. 

    OK or NG

    • OK: GO TO 3.
    • NG: Check harness for open or short between rear view camera control unit and back-up lamp relay.
    Fig 2: Checking Voltage Between Rear View Camera Control Unit Harness Connector B73 Terminal 4 (G/W) And Ground
    G02385915Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK DISPLAY CONTROL UNIT OUTPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect rear view camera control unit connector.
    3. Turn ignition switch ON.
    4. Check voltage between rear view camera control unit harness connector B73 terminal 5 (BR) and ground.
      • Voltage: Approx. 5V 

    OK or NG

    • OK: GO TO 5.
    • NG: GO TO 4.
    Fig 3: Checking Voltage Between Rear View Camera Control Unit Harness Connector B73 Terminal 5 (BR) And Ground
    G02385916Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK DISPLAY CONTROL UNIT CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect display control unit connector.
    3. Check continuity between rear view camera control unit harness connector B73 terminal 5 (BR) and display control unit harness connector M94 terminal 8 (BR).
      • Continuity should exist. 
    4. Check continuity between rear view camera control unit harness connector B73 terminal 5 (BR) and ground.
      • Continuity should not exist. 
      Fig 4: Checking Continuity Between Rear View Camera Control Unit Harness Connector B73 Terminal 5 And Display Control Unit Harness Connector M94 Terminal 8
      G02385917Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

  5. CHECK AV CONTROL SIGNAL 
    1. Turn ignition switch OFF.
    2. Connect rear view camera control unit connector.
    3. Shift A/T selector lever to R position.
    4. Check voltage between rear view camera control unit harness connector B73 terminal 5 (BR) and ground.
      • Voltage: Approx. 0V 
      Fig 5: Checking Voltage Between Rear View Camera Control Unit Harness Connector B73 Terminal 5 (BR) And Ground
      G02385918Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

  6. CHECK REAR VIEW CAMERA OPEN CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect rear view camera connector.
    3. Check continuity between rear view camera control unit harness connector B73 terminal 8 (Y) and rear view camera harness connector D504 terminal 1 (Y).
      • Continuity should exist. 
    4. Check continuity between rear view camera control unit harness connector B73 terminal 9 and rear view camera harness connector D504 terminal 4.
      • Continuity should exist. 
      Fig 6: Checking Continuity Between Rear View Camera Control Unit Harness Connector B73 Terminals 8, 9, 10, And Rear View Camera Harness Connector D504 Terminals 1, 3 And 4
      G02385919Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Check continuity between rear view camera control unit harness connector B73 terminal 10 (G) and rear view camera harness connector D504 terminal 3 (G).
      • Continuity should exist. 

    OK or NG

    • OK: GO TO 7.
    • NG: Repair harness or connector.
  7. CHECK REAR VIEW CAMERA SHORT CIRCUIT 
    1. Check continuity between rear view camera control unit harness connector B73 terminal 8 (Y) and ground.
      • Continuity should not exist. 
    2. Check continuity between rear view camera control unit harness connector B73 terminal 9 and ground.
      • Continuity should not exist. 
    3. Check continuity between rear view camera control unit harness connector B73 terminal 10 (G) and ground.
      • Continuity should not exist. 
      Fig 7: Checking Continuity Between Rear View Camera Control Unit Harness Connector B73 Terminals 8, 9, 10 And Ground
      G02385920Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 8.
    • NG: Repair harness on connector.
  8. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Check power supply and ground circuit. Refer to "POWER SUPPLY AND GROUND CIRCUIT INSPECTION  ".

    OK or NG

    • OK: GO TO 9.
    • NG: Repair or replace power supply or ground circuit.
  9. CHECK REAR VIEW CAMERA CONTROL UNIT OUTPUT SIGNAL 
    1. Connect rear view camera control unit connector.
    2. Turn ignition switch ON.
    3. Shift A/T selector lever to R position.
    4. Check voltage between rear view camera control unit harness connector B73 terminal 8 (Y) and ground.
      • Voltage: Approx. 6V 
      Fig 8: Checking Voltage Between Rear View Camera Control Unit Harness Connector B73 Terminal 8 (Y) And Ground
      G02385921Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

  10. CHECK REAR VIEW CAMERA SIGNAL 
    1. Connect rear view camera 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 B73 terminal 10 (G) and ground.
      Fig 9: Rear View Camera Control Unit Harness Connector B73 Terminal 10 (G) And Ground Voltage Signal Graph
      G02385922Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 10: Checking Voltage Signal Between Rear View Camera Control Unit Harness Connector B73 Terminal 10 (G) And Ground
      G02385923Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

  11. CHECK COMPOSITE SIGNAL OPEN OR SHORT CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect rear view camera control unit connector and display unit connector.
    3. Check continuity between rear view camera control unit harness connector B73 terminal 12 (W) and display unit harness connector M93 terminal 15 (W).
      • Continuity should exist. 
    4. Check continuity between rear view camera control unit harness connector B73 terminal 12 (W) and ground.
      • Continuity should not exist. 
      Fig 11: Checking Continuity Between Rear View Camera Control Unit Harness Connector B73 Terminal 12 And Display Unit Harness Connector M93 Terminal 15
      G02385924Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 12.
    • NG: Repair harness or connector.
  12. CHECK COMPOSITE SIGNAL GROUND CIRCUIT 
    1. Check continuity between rear view camera control unit harness connector B73 terminal 11 and display unit harness connector M93 terminal 4.
      • Continuity should exist. 
    2. Check continuity between rear view camera control unit harness connector B73 terminal 11 and ground.
      • Continuity should not exist. 
      Fig 12: Checking Continuity Between Rear View Camera Control Unit Harness Connector B73 Terminal 11 And Display Unit Harness Connector M93 Terminal 4
      G02385925Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 13.
    • NG: Repair harness or connector.
  13. CHECK REAR VIEW CAMERA CONTROL UNIT COMPOSITE SIGNAL 
    1. Connect rear view camera control unit connector and display unit connector.
    2. Turn ignition switch ON.
    3. Check voltage signal between rear view camera control unit harness connector B73 terminal 12 (W) and ground.
      Fig 13: Rear View Camera Control Unit Harness Connector B73 Terminal 12 (W) And Ground Voltage Signal Graph
      G02385926Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 14: Checking Voltage Signal Between Rear View Camera Control Unit Harness Connector B73 Terminal 12 (W) And Ground
      G02385927Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

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