C003A:01

PINPOINT TEST 13: DTC C0031:01; C0034:01; C0037:01 OR C003A:01

Normal Operation

The active wheel speed sensor generates a signal that is sent to the ABS module. The wheel speed sensor circuitry connects to the ABS module connector through 2 wires and a connector at each wheel speed sensor. When the ignition switch is turned to the RUN position, the ABS module carries out a self-test by sending a reference voltage through the wheel speed sensors and their circuitry to determine if they are functional.Voltage is supplied to the active wheel speed sensors from the ABS module. The wheel speed sensor ground is also supplied by the ABS module.

C003A:01-C0037:01:

Possible Causes
- Wiring, terminals or connectors
- Wheel speed sensor
- ABS module

Diagnostic Procedure

CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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