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Home › Nissan-Datsun › 2002 › Sentra SE-R, Automatic › Repair and Diagnosis › External Pages › Different car › Section 1788 (Audio, Visual, Navigation & Telephone System (Sedan)) › Telephone › Steering Wheel Audio Control Switch Does Not Operate

Steering Wheel Audio Control Switch Does Not Operate

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE 
    1. Turn ignition switch OFF.
    2. Disconnect steering wheel audio control switch connector.
    3. Check resistance steering wheel audio control switch. Refer to "STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE INSPECTION ".

    Resistance value is OK? 

    YES or NO 

    1. YES : GO TO 2.
    2. NO : Replace steering wheel audio control switch.
  2. CHECK (1): STEERING WHEEL AUDIO CONTROL SWITCH CIRCUIT 
    1. Disconnect TEL adapter unit connector.
    2. Check continuity between TEL adapter unit harness connector (A) B424 and combination switch (spiral cable) harness connector (B) M23.
    CONNECTOR TERMINAL CONTINUITY REFERENCE

    Terminals Continuity
    Connector Terminal Connector Terminal
    B424 12 M23 24 Yes
    13 32
    14 31
    Fig 1: Identifying Continuity Between Tel Adapter Unit Connector (A) B424 And Combination Switch Connector (B) M23
    G04124466Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 3.
    2. NG : Repair harness or connector.
  3. CHECK (2): STEERING WHEEL AUDIO CONTROL SWITCH CIRCUIT 
    1. Disconnect audio unit connector.
    2. Check continuity between TEL adapter unit harness connector (A) B424 and audio unit harness connector (B) M39.
    CONNECTOR TERMINAL CONTINUITY REFERENCE

    Terminals Continuity
    Connector Terminal Connector Terminal
    B424 17 M39 22 Yes
    18 23
    19 25
    Fig 2: Identifying Continuity Between Tel Adapter Unit Connector (A) B424 And Audio Unit Connector (B) M39
    G04124467Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK : GO TO 4.
    2. NG : Repair harness or connector.
  4. CHECK AUDIO UNIT 
    1. Connect audio unit connector.
    2. Turn ignition switch ON.
    3. Check voltage between audio unit harness connector M39 terminals 22, 23 and ground.

      22 - Ground : Approx. 5 V 

      23 - Ground : Approx. 5 V 

      Fig 3: Identifying Voltage Between Audio Unit Harness Connector M39 Terminals 22, 23 And Ground
      G04124468Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 5.
    2. NG : Replace audio unit.
  5. CHECK TEL ADAPTER UNIT 
    1. Connect TEL adapter unit connector.
    2. Turn ignition switch ON.
    3. Check voltage between TEL adapter unit harness connector B424 terminals 12, 13 and ground.

      12 - Ground : Approx. 5 V 

      13 - Ground : Approx. 5 V 

      Fig 4: Identifying Voltage Between Tel Adapter Unit Harness Connector B424 Terminals 12, 13 And Ground
      G04124469Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : Replace steering wheel audio control switch.
    2. NG : Replace TEL adapter unit.
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