Light Braking Pedal Pulsation ABS Control Lamp Does Not Light Up)

Speed sensor or electronic control unit defective. This will cause the return pump in the hydraulic unit to operate. Check voltage signal from speed sensors. Perform test steps 4, 5 and 6 with test adapter and multimeter (Set to AC volts position).

Remove speed sensors and check for dirt accumulation (metal chips at sensor tip). If steps 1 and 2 are in order, replace electronic control unit.