LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2010 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 264 (Audio, Visual, Navigation System) >> Audio Without Navigation >> DTC/Circuit Diagnosis >> Steering Switch Signal GND Circuit (Tel Adapter Unit To Audio Unit) >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Juke. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)
    1. Turn ignition switch OFF.
    2. Disconnect audio unit connector and TEL adapter unit connector.
    3. Check continuity between audio unit harness connector and TEL adapter unit harness connector.
    CONTINUITY REFERENCE CHART

    Audio unit TEL adapter unit Continuity
    Connector Terminal Connector Terminal
    M91 15 M127 19 Existed

    Is inspection result normal? 

    YES: GO TO 2.

    NO: Repair harness or connector.

  2. CHECK GROUND CIRCUIT
    1. Connect audio unit connector.
    2. Check continuity between audio unit harness connector and ground.
    CONTINUITY REFERENCE CHART

    Audio unit Ground Continuity
    Connector Terminal
    M91 15 Existed

    Is inspection result normal? 

    YES: Replace TEL adapter unit. Refer to "REMOVAL AND INSTALLATION ".

    NO: Replace audio unit. Refer to "REMOVAL AND INSTALLATION ".

scientia non olet · About LEMON Manuals