Light Braking Pedal Pulsation (ANTI-LOCK Light Does Not Illuminate)

Speed sensor or electronic control unit defective. This causes hydraulic unit return pump operation. Check voltage signal from speed sensors. Perform TESTS 4-6 with test adapter and DVOM (set to AC volts).

Remove speed sensors and check for dirt accumulation (metal chips at sensor tip). If pulsation still exists, replace electronic control unit.