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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 899 (Brake Control System (VDC/TCS/Abs)) >> Symptom Diagnosis >> Pedal Vibration Or Abs Operation Sound Occurs >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly depressed. However, this is normal.
  • When shifting gears
  • When driving on slippery road
  • During cornering at high speed
  • When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]
  • When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
  1. SYMPTOM CHECK 1 

    Check that there are pedal vibrations when the engine is started.

    Do vibrations occur? 

    YES: GO TO 2

    NO: Inspect the brake pedal.

  2. SYMPTOM CHECK 2 

    Check that there are ABS operation noises when the engine is started.

    Do the operation noises occur? 

    YES: GO TO 3

    NO: Perform self-diagnosis. Refer to "CONSULT FUNCTION (ABS) ".

  3. SYMPTOM CHECK 3 

    Check symptoms when electrical component (headlamps, etc.) switches are operated.

    Do symptoms occur? 

    YES: Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is, move it farther away.

    NO: Inspection End.