Normal Operation and Fault Conditions

Active wheel speed sensors generate a square wave signal proportional to wheel speed which is sent to the ABS module. Each wheel speed sensor is connected to the ABS module through 2 wires and a connector at each wheel speed sensor. The 2 circuits provide both sensor power and sensor signal return. When the ignition mode is set to ON, the ABS module carries out a self-test by sending a reference voltage through the wheel speed sensors and their circuitry.

PPT N ABS MODULE DTC FAULT TRIGGER CONDITIONS

DTC	Description	Fault Trigger Conditions
C0037:11	Left Rear Wheel Speed Sensor: Circuit Short to Ground	Sets whe the ABS module detects a short to ground in the sensor signal return circuit or if the sensor has an internal short to ground.
C003A:11	Right Rear Wheel Speed Sensor: Circuit Short to Ground	Sets when the ABS module detects a short to ground in the sensor signal return circuit or if the sensor has an internal short to ground.
C0037:15	Left Rear Wheel Speed Sensor: Circuit Short to Battery or Open	Sets when the ABS module detects a short to battery voltage or an open in the sensor signal return circuit. A short to battery voltage may be due to the sensor signal return circuit and the sensor voltage supply circuit shorted together. These DTCs also set if the sensor has an internal short to battery voltage or an open circuit.
C003A:15	Right Rear Wheel Speed Sensor: Circuit Short to Battery or Open	Sets when the ABS module detects a short to battery voltage or an open in the sensor signal return circuit. A short to battery voltage may be due to the sensor signal return circuit and the sensor voltage supply circuit shorted together. These DTCs also set if the sensor has an internal short to battery voltage or an open circuit.