LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> G25 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Audio, Visual And Navigation System) >> BOSE Audio With Navigation >> DTC/Circuit Diagnosis >> Steering Switch Signal A Circuit >> 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 370Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK STEERING SWITCH SIGNAL A CIRCUIT
    1. Disconnect AV control unit connector and spiral cable connector.
    2. Check continuity between AV control unit harness connector and spiral cable harness connector.
      CONTINUITY SPECIFICATION

      AV control unit Spiral cable Continuity
      Connector Terminal Connector Terminal
      M84 6 M36 24 Existed
    3. Check continuity between AV control unit harness connector and ground.
    CONTINUITY SPECIFICATION

    AV control unit Ground Continuity
    Connector Terminal
    M84 6 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 "REMOVAL AND INSTALLATION ".

  3. CHECK AV CONTROL UNIT VOLTAGE
    1. Connect AV control unit connector and spiral cable connector.
    2. Turn ignition switch ON.
    3. Check voltage between AV control unit harness connector.
    VOLTAGE SPECIFICATION

    (+) (-) Voltage (Approx.)
    AV control unit AV control unit
    Connector Terminal Connector Terminal
    M84 6 M84 15 5.0 V

    Is the inspection result normal? 

    YES: Go to 4.

    NO: Replace AV control 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 "REMOVAL AND INSTALLATION ".