Test B: DTC C1222 - Wheel Speed Mismatch, DTCs C1233, C1234 and C1237 (Rear) - Wheel Speed Sensor Signal Fault

PINPOINT TEST B: DTC C1222 - WHEEL SPEED MISMATCH DTCs C1237,1233 and C1234 - WHEEL SPEED INPUT SIGNAL MISSING
Refer to Vehicle/Diagrams, Dynamic Systems for schematic and connector information.

Normal Operation
The wheel speed sensor circuitry connects to the anti-lock brake system (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.

Possible Causes
^ Mismatched tire sizes
^ Wheel speed sensor ring
^ Wheel speed sensor
^ ABS module

B1-B5:

B6-B8:

B8:

B9-B10: