LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2008 >> M45 Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System >> VDC/TCS/Abs >> Trouble Diagnosis For System >> Stop Lamp Switch Circuit >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

  1. CHECK SELF-DIAGNOSIS RESULTS 

    Check self-diagnosis results.

    SELF-DIAGNOSIS RESULTS

    Self-diagnosis results
    STOP LAMP SW

    Is above displayed on the self-diagnosis display? 

    YES: GO TO 2.

    No: INSPECTION END

  2. CHECK CONNECTOR 
    1. Turn ignition switch OFF and disconnect stop lamp switch connector E124 and ABS actuator and electric unit (control unit) connector E30, check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
    2. Reconnect connectors securely.
    3. Start engine.
    4. Repeat pumping brake pedal carefully several times, and perform self-diagnosis.

    OK or NG 

    OK: INSPECTION END

    NG: GO TO 3.

  3. CHECK STOP LAMP SWITCH CIRCUIT 
    1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30.
    2. Check voltage between ABS actuator and electric unit (control unit) harness connector E30 terminal 30 and ground.
      Fig 1: Checking Voltage Between ABS Actuator And Electric Unit Harness Connector E30 Terminal 30 And Ground
      G05211856Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Perform self-diagnosis.

    NG:

    • Repair or replace stop lamp switch circuit.
    • Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".
      CONTINUITY SPECIFICATION

      ABS actuator and electric unit (control unit) Ground Condition Voltage
      30 - Brake pedal depressed Battery voltage (Approx. 12 V)
      Brake pedal not depressed Approx. 0V