Operation CHARM: Car repair manuals for everyone.

Test C: DTCs C1145, C1155 and C1230 - Wheel Speed Sensor Circuit Failure

Pinpoint Test C: DTCs C1145, C1155 and C1230 - Wheel Speed Sensor Circuit Failure

Normal Operation
The wheel speed sensor and the wheel speed sensor ring generate a signal that is sent to the ABS module. The wheel speed sensor circuitry connects to the ABS module connector C135 through 2 wires and a connector at each wheel speed sensor. When the ignition 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.

Possible Causes
^ Circuit open
^ Circuit shorted
^ Wheel speed sensor
^ ABS module

C1-C3:




C3-C6: