2007 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Combination Switch Inspection

WARNING: This page is about a different car, the 2009 Nissan Sentra. 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.

    SYSTEM MALFUNCTIONING REFERENCE

    System 1 System 2 System 3 System 4 System 5
    - FRONT WASHER FRONT WIPER LO TURN LH TURN RH
    FRONT WIPER HI - FRONT WIPER INT PASSING HEAD LAMP 1
    INT VOLUME 1 - - HEAD LAMP 2 HI BEAM
    - INT VOLUME 3 - - LIGHT SW 1ST
    INT VOLUME 2 - - FRONT FOG -

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

  2. SYSTEM CHECK

    With CONSULT-III

    1. Connect CONSULT-III, and select "COMB SW" on BCM "SELECT TEST ITEM" screen.
    2. Select "DATA MONITOR".
    3. Select "START", and confirm that other switches in the system operate normally.

    Example: When turn signal LH is inoperative, confirm that PASSING, HEAD LAMP 2 or FRONT FOG (if equipped) turn ON-OFF normally.

    Without CONSULT-III

    Operate combination switch, and confirm that other switches in the system operate normally.

    Example: When a turn signal switch is inoperative, confirm that FRONT WIPER LO or FRONT WIPER INT turn ON-OFF normally.

    Check results 

    Other switches in the system operate normally.:Replace lighting switch or wiper switch.

    Other switches in the system do not operate normally.:GO TO 3.

  3. HARNESS INSPECTION
    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.
      TERMINALS CONTINUITY REFERENCE

      Suspect system A B Continuity
      Connector Terminal Connector Terminal
      1 M18 Input 1 6 M28 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
      Fig 1: Checking Continuity Between BCM Connector Of Suspect System And Corresponding Combination Switch Harness Connector Terminals
      G04928349Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check for continuity between the BCM harness connector in suspect system and ground.
    TERMINALS CONTINUITY REFERENCE

    Suspect system BCM Ground Continuity
    Connector Terminal
    1 M18 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
    Fig 2: Checking Continuity Between BCM Connector In Suspect System And Ground
    G04928350Courtesy of NISSAN MOTOR CO., U.S.A.

    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. Connect BCM and combination switch connectors.
    2. Turn ignition switch ON.
    3. Turn lighting switch and wiper switch to OFF position.
    4. Set wiper dial to position 4.
    5. Check BCM output terminal voltage waveform of suspect system.
    Fig 3: Checking BCM Output Terminal Voltage Waveform Of Suspect System
    G04878699G04878931G04928352Courtesy of NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.
    TERMINALS VOLTAGE REFERENCE

    Suspect system Terminal Reference value
    (+) (-)
    Combination switch connector Terminal
    1 M28 1 Ground
    G04878931Courtesy of NISSAN MOTOR CO., U.S.A.

    1.2V
    2 2
    3 3
    4 4
    5 5
    G04928352Courtesy of NISSAN MOTOR CO., U.S.A.

    1.2V

    OK or NG 

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

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

  5. COMBINATION SWITCH INSPECTION

    Referring to table below, perform combination switch inspection.

    COMBINATION SWITCH REFERENCE

    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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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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