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Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 198 (Audio, Visual And Navigation System) >> BOSE Audio With Navigation >> DTC/Circuit Diagnosis >> Composite Image Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connector and front display unit connector.
    3. Check continuity between AV control unit harness connector and front display unit harness connector.
      CONTINUITY SPECIFICATION

      AV control unit Front display unit Continuity
      Connector Terminal Connector Terminal
      M86 68 M75 18 Existed
    4. Check continuity between AV control unit harness connector and ground.
    CONTINUITY SPECIFICATION

    AV control unit Ground Continuity
    Connector Terminal
    M86 68 Not existed

    Is the inspection result normal? 

    YES: Go to 2.

    NO: Repair harness or connector.

  2. CHECK AUX COMPOSITE SIGNAL
  1. Connect AV control unit connector and front display unit connector.
  2. Turn ignition switch ON.
  3. Check signal between auxiliary input jacks harness connector and ground.
TERMINALS REFERENCE

(+) (-) Condition Reference value
AV control unit
Connector Terminal
M86 68 Ground At DVD image is displayed.
G04890020Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal? 

YES: Replace front display unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".