Code 16

This test drive is a generic test used to verify repair of system, attempt to recreate an intermittent problem or attempt to detect a symptom when trouble code or symptom is not known.

1. Turn ignition on. Observe Yellow light self-check. Turn headlights on. Depress brake pedal. Monitor Yellow light for 10 seconds. If Yellow light self-checks normally and does not flash when headlights are on and brake pedal is depressed, go to next step. If Yellow light is flashing, replace Keep Alive Memory (KAM) fuse and repeat this step.
   NOTE: Perform following step on wet pavement.
2. Drive vehicle at about 10 MPH. Depress brake pedal enough to lock all 4 wheels while observing left rear wheel in driver-side mirror. Perform second stop while observing right rear wheel in passenger-side mirror. If both rear wheels lock or one wheel locks consistently (momentary lock is okay) and Yellow light is not on, go to SYMPTOM B - ONE OR BOTH REAR WHEELS LOCK UP  under SYMPTOM DIAGNOSIS. If rear wheels do not lock but other symptoms are present, go to step 6). If rear wheels do not lock and Yellow light is not on, go to next step. If Yellow light comes on and stays on, go to step 7).
   NOTE: Perform following step on dry pavement.
3. Drive vehicle at about 20 MPH. Ensure wipers are off. Perform light to medium (normal traffic) stop. Observe brake pedal for pulsations within 10 seconds after vehicle has stopped. If pulsations in brake pedal was felt during stop or within 10 seconds after stop and Yellow light was not on, go to SYMPTOM A - UNWARRANTED RABS ACTIVITY  under SYMPTOM DIAGNOSIS. If pulsations were not felt but other symptoms are present, go to step 6). If pulsations were not felt and Yellow light was not on, go to step 4). If Yellow light comes on and stays on, go to step 7).
4. Turn ignition on. Depress and release brake pedal while observing brakelights. If brakelights turn on and off normally, go to next step. If brakelights do not turn on and off normally, go to CODE 11 - BRAKELIGHT SWITCH ALWAYS CLOSED OR CIRCUIT WORN/DAMAGED  under TROUBLE CODE DIAGNOSIS.
5. If customer complaint has been addressed and corrected by previous actions, RABS system function has been verified. If customer complaint has not been addressed and corrected by previous actions, go to SYMPTOM DIAGNOSIS  .
6. If brake pedal is hard or soft or there is a lack of sufficient vehicle deceleration during brake application, go to SYMPTOM DIAGNOSIS  . If brake pedal is normal and there is sufficient vehicle deceleration during brake application, problem is not in RABS system. Diagnose foundation brake system.
7. Check for trouble codes. See RETRIEVING TROUBLE CODES  . If trouble code is the same as before and all tests for code have been performed, repeat TROUBLE CODE DIAGNOSIS  for code received. If all steps have not been performed, return to last step performed and continue. If a different code is present, go to corresponding code under TROUBLE CODE DIAGNOSIS  . If no codes are present, go to TEST D - YELLOW LIGHT CHECK OKAY, BUT DOESN'T FLASH TROUBLE CODE  under PRE-CHECK TESTS.