D: C1145, C1155, C1165, C1175 - Wheel Speed Sensor Input Circuit Failure
Pinpoint Test D: DTCs C1145, C1155, C1 165, and C1175 Wheel Speed Sensor Input Circuit FailureTest D1:
Test D1-D3:
Test D3-D5:
Test D5-D6:
Normal Operation
The active wheel speed sensors generate a square wave signal that is sent to the Antilock Brake System (ABS) module. The wheel speed sensor circuitry connects to the ABS module 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 to all of the wheel speed sensors and their circuitry to determine if they are functional.
Voltage and ground signals are supplied to the wheel speed sensors from the ABS module.
Possible Causes
^ circuit 514 (YE/RD) open, short to voltage, or short to ground
^ circuit 516 (YE/BK) open, short to voltage, or short to ground
^ circuit 518 (LG/RD) open, short to voltage, or short to ground
^ circuit 519 (LG/BK) open, short to voltage, or short to ground
^ circuit 521 (TN/OG) open, short to voltage, or short to ground
^ circuit 522 (TN/BK) open, short to voltage, or short to ground
^ circuit 523 (RD/PK) open, short to voltage, or short to ground
^ circuit 524 (PK/BK) open, short to voltage, or short to ground
^ wheel speed sensor
^ ABS module
CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.