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Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT (AUX INPUT JACKS AND AV CONTROL UNIT) 
    1. Turn ignition switch OFF.
    2. Disconnect auxiliary input jacks connector and AV control unit connector.
    3. Check continuity between auxiliary input jacks harness connector terminal 7, 8 and AV control unit harness connector terminal 66, 74.

      7 - 66: Continuity should exist. 

      8 - 74: Continuity should exist. 

    4. Check continuity between auxiliary input jacks harness connector terminal 7, 8 and ground.

      7, 8 - Ground: Continuity should not exist. 

    Is the inspection result normal? 

    Yes: GO TO  2.

    No: Repair harness or connector.

  2. CHECK AUX IMAGE SIGNAL (AUX INPUT JACKS TO AV CONTROL UNIT) 
    1. Connect auxiliary connector and AV control unit connector.
    2. Turn ignition switch ON.
    3. Check signal between auxiliary input jacks harness connector terminal 7 and 8.
      SIGNAL REFERENCE TABLE

      Terminal Condition Reference value
      7 - 8 Ignition switch ON when AUX image is displayed.
      G05722085Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    Yes: GO TO  3.

    No: Check that there is no malfunction in the external device.

  3. CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT AND FRONT DISPLAY UNIT) 
    1. Turn ignition switch OFF.
    2. Disconnect front display unit connector and AV control unit connector.
    3. Check continuity between front display unit harness connector terminal 15 and AV control unit harness connector terminal 36.

      15 - 36: Continuity should exist. 

    4. Check continuity between front display unit harness connector terminal 15 and ground.

      15 - Ground: Continuity should not exist. 

    Is the inspection result normal? 

    Yes: GO TO  4.

    No: Repair harness or connector.

  4. CHECK AUX IMAGE SIGNAL 
    1. Connect AV control unit connector and front display unit connector.
    2. Turn ignition switch ON.
    3. Check signal between front display unit harness connector terminal 15 and ground.
      SIGNAL REFERENCE TABLE

      Terminal Condition Reference value
      15 - Ground Ignition switch ON When AUX image is displayed.
      G05722086Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    Yes: Replace front display unit.

    No: Replace AV control unit.

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