Operation CHARM: Car repair manuals for everyone.

Road Test Vehicle


N. Road Test Vehicle

1. Turn the ignition key on.

2. Make sure that the red and yellow brake system indicator lights go off after the system self-test. This indicates normal system operation.

3. With the key still on, wait for five minutes without applying the brakes. The pump should not restart during this time.

4. If one or both indicator lights stay on, a system fault is present. Also, if the pump restarts during the five minute period a fault code may be generated. Use the DRB II to identify any ABS system faults and correct them before road testing the vehicle.

5. After ensuring that the ABS brake system is functioning properly, clear all stored faults from the electronic control unit (ECU).

6. Road test the vehicle. During the road test make several "normal" stops and several stops during which the anti-lock system cycles. Check for proper pedal feel and brake operation.

7. Check the system status again following the road test using the DRB II.
Any faults generated during the road test should be diagnosed and corrected as necessary.

8. Clear any such fault codes from the ECU after correction.