Test E: DTC C1145, DTC C1155, DTC C1230 - Wheel Speed Sensor Input Circuit Failure
PINPOINT TEST E: DTC C1145 (RF), DTC C1155 (LF), DTC C1230 (REAR) - WHEEL SPEED SENSOR INPUT CIRCUIT FAILURENormal Operation
The active wheel speed sensors generate a square wave signal that is sent to the anti-lock 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 a ground signal 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
^ wheel speed sensor
^ ABS module
Tests E1-E4:
Tests E4-E6:
Tests E6-E7:
Tests E7-E8:
