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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (Audio, Visual & Navigation System (DTC/Circuit Diagnosis) (BOSE Audio W/NAVI W/O Surround) (Except Hybrid) (2 Of 2)) >> DTC/Circuit Diagnosis >> Steering Switch >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK STEERING SWITCH RESISTANCE

    1. Turn ignition switch OFF.
    2. Disconnect combination switch connector M149.
    3. Check resistance between combination switch connector terminals.
    Combination switch connector M149 Condition Resistance Ω
    (Approx.)
    Terminal Terminal
    14 17 Depress SOURCE switch. 1
    Depress UTRI switch. 121
    Depress DTRI switch. 321
    Depress PTT switch. 723
    Depress ENTER switch. 2023
    15 Depress -SPEAKER switch. 1
    Depress SPEAKER+ switch. 121
    Depress TEL switch. 321
    Depress BACK_R switch. 723
    Depress DISP switch. 2023

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Replace steering switch. Refer to REMOVAL AND INSTALLATION .

  2. CHECK HARNESS BETWEEN COMBINATION SWITCH AND COMBINATION METER

    1. Disconnect combination meter connector M24 and combination switch connector M30.
    2. Check continuity between combination meter connector M24 and combination switch connector M30.
      Combination meter Combination switch Continuity
      Connector Terminal Connector Terminal
      M24 3 M30 24 Yes
      24 33
      4 31
    3. Check continuity between combination meter connector M24 and ground.
      Combination meter Ground Continuity
      Connector Terminal
      M24 3 - No
      24
      4

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness or connectors.

  3. CHECK COMBINATION SWITCH

    Check continuity between combination switch connectors M30 and M149.

    Combination switch Continuity
    Connector Terminal Connector Terminal
    M30 24 M149 14 Yes
    31 15
    33 17

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Replace spiral cable. Refer to REMOVAL AND INSTALLATION .

  4. CHECK HARNESS BETWEEN COMBINATION METER AND AV CONTROL UNIT

    1. Disconnect AV control unit connector M122.
    2. Check continuity between combination meter connector M24 and AV control unit connector M122.
      Combination meter AV control unit Continuity
      Connector Terminal Connector Terminal
      M24 14 M122 6 Yes
      15 16
      16 15
    3. Check continuity between combination meter connector M24 and ground.
      Combination meter Ground Continuity
      Connector Terminal
      M24 14 - No
      15
      16

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Repair or replace harness or connectors.

  5. CHECK AV CONTROL UNIT VOLTAGE

    1. Connect combination meter connector M24 and AV control unit connector M122.
    2. Turn ignition switch ON.
    3. Check voltage between terminals of AV control unit connector M122.
      AV control unit M122 Voltage
      (Approx.)
      (+) (-)
      Terminal Terminal
      6 15 5.0 V
      16

    Is the inspection result normal?

    YES 

    Replace AV control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace combination meter. Refer to REMOVAL AND INSTALLATION .

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