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Combination Switch Inspection

WARNING: This page is about a different car, the 2007 Infiniti FX45 and 2007 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. SYSTEM CHECK 

    Referring to table below, check which system malfunctioning switch belongs to.

    COMBINATION SWITCH MALFUNCTION CHART

    System 1 System 2 System 3 System 4 System 5
    - FR WASHER FR WIPER LO TURN LH TURN RH
    FR WIPER HI - FR WIPER INT PASSING HEAD LAMP1
    INT VOLUME 1 RR WASHER - HEAD LAMP2 HI BEAM
    RR WIPER INT INT VOLUME 3 AUTO LIGHT - LIGHT SW 1ST
    INT VOLUME 2 RR WIPER ON - FR FOG -

    >> Check the system to which malfunctioning switch belongs, and GO TO 2.

  2. SYSTEM CHECK 

    With CONSULT-II

    CAUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.
    1. Connect CONSULT-II, and select "COMB SW" on "SELECT TEST ITEM" screen.
    2. Select "DATA MONITOR".
    3. Select "START", and confirm that other switches in malfunctioning system operate normally.
      4. Fig 1: Identifying CONSULT-II Display - DATA MONITOR
      G04922815Courtesy of NISSAN MOTOR CO., U.S.A.

    Example: When the auto light switch is malfunctioning, confirm that "FRONT WIPER LOW" and "FRONT WIPER INT" in system 3, to which the auto light switch belongs, turn ON-OFF normally.

    Without CONSULT-II

    Operating combination switch, and confirm that other switches in malfunctioning system operate normally. Example: When the auto light switch is malfunctioning, confirm that FRONT WIPER LOW and FRONT WIPER INT in system 3, to which the auto light switch belongs, operate normally.

    Check results 

    Other switches in malfunctioning system operate normally.>> Replace lighting switch or wiper switch.

    Other switches in malfunctioning system do not operate normally.>> GO TO 3.

  3. CHECK HARNESS 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector and combination switch connector.
    3. Check for continuity between BCM harness connector of the suspect system and the corresponding combination switch harness connector.
      Fig 2: Checking Continuity Between BCM Harness Connector And Combination Switch Harness Connector
      G04922816Courtesy of NISSAN MOTOR CO., U.S.A.
      BCM HARNESS CONNECTOR AND COMBINATION SWITCH HARNESS

      Suspect system BCM Combination switch Continuity
      Connector Terminal Connector Terminal
      1 M3 Input 1 6 M17 6 Yes
      Output 1 36 1
      2 Input 2 5 7
      Output 2 35 2
      3 Input 3 4 10
      Output 3 34 3
      4 Input 4 3 9
      Output 4 33 4
      5 Input 5 2 8
      Output 5 32 5
    4. Check for continuity between BCM harness connector in suspect malfunctioning system and ground.
      5. Fig 3: Identifying Continuity Between BCM Harness Connector And Ground
      G04878698Courtesy of NISSAN MOTOR CO., U.S.A.
    BCM HARNESS CONNECTOR AND GROUND

    Suspect system BCM connector Terminal Ground Continuity
    1 M3 Input 1 6 No
    Output 1 36
    2 Input 2 5
    Output 2 35
    3 Input 3 4
    Output 3 34
    4 Input 4 3
    Output 4 33
    5 Input 5 2
    Output 5 32

    OK or NG 

    OK: GO TO 4.

    NG: Check harness between BCM and combination switch for open or short circuit.

  4. CHECK BCM OUTPUT TERMINAL 
    1. Turn lighting switch and wiper switch OFF position.
    2. Set wiper dial position 4.
    3. Connect BCM connector and combination switch connector.
    4. Turn ignition switch ON.
    5. Check BCM output terminal voltage waveform of suspect malfunctioning system.
      6. Fig 4: Identifying BCM Output Terminal Voltage Waveform Of Suspect Malfunctioning System
      G04878699Courtesy of NISSAN MOTOR CO., U.S.A.
    BCM OUTPUT TERMINAL

    Suspect system (+) (-) Reference value
    Combination switch connector Terminal
    1 M17 1 Ground
    G04922818Courtesy of NISSAN MOTOR CO., U.S.A.
    2 2
    3 3
    4 4
    5 5

    OK or NG 

    OK: Open circuit in combination switch, GO TO 5.

    NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

  5. CHECK COMBINATION SWITCH 

    Referring to table below, perform combination switch inspection.

    COMBINATION SWITCH REFERENCE CHART

    Procedure
    1 2 3 4 5 6 7
    Replace lighting switch Confirm check results OK INSPECTION END Confirm check results OK INSPECTION END Confirm check results OK INSPECTION END
    NG Replace wiper switch NG Replace switch base NG Confirm symptom again

    >> INSPECTION END 

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