Test C: DTC C1145, DTC C1155, DTC C1230 Wheel Speed Sensor Input Circuit Failure
Test C: DTC C1145, DTC C1155, DTC C1230 Wheel Speed Sensor Input Circuit FailureRefer to Vehicle/Diagrams, Vehicle Dynamic Systems for schematic and connector information.
Normal 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
^ Fuse
^ Circuit open
^ Circuit shorted
^ Wheel speed sensor
^ ABS module
C1-C3:
C3-C4:
C4-C5:
C5-C6:
