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2. Unexpected Pedal Action

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BRAKE PEDAL STROKE 

    Check brake pedal stroke.

    Fig 1: Checking Brake Pedal Stroke
    G02034835Courtesy of NISSAN MOTOR CO., U.S.A.

    Is brake pedal stroke excessively large? 

    1. Yes: Perform PRELIMINARY CHECK  .
    2. NO: GO TO 2.
  2. CHECK MECHANICAL BRAKE SYSTEM PERFORMANCE 

    Disconnect ABS actuator and electric unit connector and check whether brake is effective.

    Does brake system function properly when brake pedal is depressed? 

    1. Yes: GO TO 3.
    2. NO: Perform PRELIMINARY CHECK  .
  3. CHECK WARNING LAMP INDICATION 

    Ensure warning lamp remains off while driving.

    Fig 2: Checking Warning Lamp Indication
    G02034836Courtesy of NISSAN MOTOR CO., U.S.A.

    Is warning lamp turned off? 

    1. Yes: GO TO 4.
    2. NO: Carry out self-diagnosis. Refer to SELF-DIAGNOSIS  , SELF-DIAGNOSIS PROCEDURE  .
  4. CHECK WHEEL SENSOR 
    1. Check wheel sensor connector for terminal damage or loose connection.
    2. Perform wheel sensor mechanical check. Refer to "7. CHECK SENSOR ROTOR" in "DIAGNOSTIC PROCEDURE", WHEEL SENSOR OR ROTOR  .

    Is wheel sensor mechanism OK? 

    1. Yes: Check ABS actuator and electric unit pin terminals for damage or the connection of ABS actuator and electric unit harness connector.

      Reconnect ABS actuator and electric unit harness connector. Then retest.

    2. NO: Repair.
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