DT1.3 Check For Unwarranted RABS Activity

NOTE: Stop should be performed on dry pavement.

- Drive vehicle at approximately 20 mph.

- Perform a light to medium (normal traffic) stop.

- Turn off the windshield wipers if they are on. (Wipers can cause a pulsation in the brake pedal that can be mistaken for RABS II activity.) Feel for pulsation in the brake pedal within 10 seconds after the vehicle has come to a stop.

- Is there any pulsation in the brake pedal any time during the stop or within 10 seconds after the vehicle has stopped?

YES -- And rear ABS light is not on. Go to Symptom A, unwarranted RABS II Activity. A - Unwarranted ABS Activity

NO -- But other symptoms are detected. Go to DT1.6. DT1.6 Determine Next Diagnostic Step Based on Brake Symptom

NO -- And REAR ABS light is not on. Go to DT1.4. DT1.4 Brake Stop Lamp/Switch Check

NO -- Rear ABS light comes on and stays on -- Go to DT1.7. DT1.7 Obtain Diagnostic Trouble Code