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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 B Circuit (Steering Switch To Tel Adapter Unit) >> Diagnosis Procedure
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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 B (STEERING SWITCH TO TEL ADAPTER UNIT) CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect TEL adapter unit connector and spiral cable connector.
    3. Check continuity between TEL adapter unit harness connector and spiral cable harness connector.
      CONTINUITY REFERENCE CHART

      TEL adapter unit Spiral cable Continuity
      Connector Terminal Connector Terminal
      M127 13 M33 31 Existed
    4. Check continuity between TEL adapter unit harness connector and ground.
      CONTINUITY REFERENCE CHART

      TEL adapter unit Ground Continuity
      Connector Terminal
      M127 13 Not existed

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Repair harness or connector.

  2. CHECK SPIRAL CABLE

    Check spiral cable.

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Replace spiral cable. Refer to "EXPLODED VIEW ".

  3. CHECK TEL ADAPTER UNIT VOLTAGE
    1. Connect TEL adapter unit connector and spiral cable connector.
    2. Turn ignition switch ON.
    3. Check voltage between TEL adapter unit harness connector.
    VOLTAGE REFERENCE CHART

    Probe Standard Reference value (Approx.)
    (+) (-)
    TEL adapter unit
    Connector Terminal Connector Terminal
    M127 13 M127 14 0 - 5.2 V 5.0 V

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Replace TEL adapter unit. Refer to "REMOVAL AND INSTALLATION ".

  4. CHECK STEERING SWITCH
    1. Turn ignition switch OFF.
    2. Check steering switch. Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace steering switch. Refer to "EXPLODED VIEW ".