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Home >> Chevrolet >> 1998 >> Tracker 4D Utility, RWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> System Tests >> Motor Test

Motor Test

  1. Turn ignition off. Connect Tech 2. Turn ignition on. Select SPECIAL FUNCTIONS, MANUAL CONTROL. Pump brake pedal until firm. Depress and hold pedal. RELEASE motor to be tested.
  2. Brake pedal should move smoothly to floor. As pedal moves, feedback current should momentarily drop to a few amps, then become 6 amps. Rough or jumpy movement indicates an intermittent electrical connection within the motor.
  3. With brake pedal at floor, apply same motor. Pedal should move smoothly back to top of its travel. Feedback current should momentarily drop to a few amps, then become 10 amps, indicating motor has reached top of its bore.
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