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Abs Function Test

  1. Turn ignition to LOCK position. Raise and support vehicle. Install TECH-1 scan tester. Turn ignition on. Select a channel to test left front, right front or rear brakes.
  2. Firmly depress brake pedal. Pedal should remain high and firm. Have an assistant attempt to rotate wheel being tested. If wheel does not rotate, base brake apply is functioning properly.
  3. With brake pedal still depressed, press up arrow button on scan tester to begin test. The brake pedal should remain high and firm. If brake pedal height drops, check if solenoid harness connectors are connected to correct solenoid.
  4. With brake pedal still depressed, have an assistant attempt to rotate wheel. Wheel should rotate with little or no resistance for the full 18 seconds of the test. After 18 seconds, brake pressure will be applied, and a slight bump may be felt in brake pedal. Wheel should not be able to be turned at this point.
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