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

PINPOINT TEST B: DTCs C1145, C1155 AND C1230 - WHEEL SPEED SENSOR CIRCUIT FAILURE
Refer to Vehicle/Diagrams, Vehicle Dynamic Systems for schematic and connector information.

Normal Operation
The wheel speed sensor and the wheel speed sensor ring generate a signal that is sent to the anti-lock brake system (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

B1-B2:

B2-B4:

B5-B6: