Test D: DTCs C1145, C1155, C1165 or C1175 - Wheel Speed Sensor Input Circuit Failure

Pinpoint Test D: DTCs C1145, C1155, C1165 or C1175 - Wheel Speed Sensor Input Circuit Failure

Refer to Vehicle/Diagrams, Vehicle Dynamic Systems for schematic and connector information.

Normal Operation
The active wheel speed sensor generates a signal that is sent to the anti-lock brake system (ABS) module. The wheel speed sensor circuitry connects to the ABS module connector C155 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 right front wheel speed sensor and its 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 supplied by the ABS module.

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

D1-D2:

D2-D4:

D5-D6: