Test E: DTC C1222 - Wheel Speed Mismatch, DTCS C1233 (LF), C1234 (RF), C1236 (Rear) - Wheel Speed Sensor Signal Fault

PINPOINT TEST E: DTC C1222 - WHEEL SPEED MISMATCH, DTCs C1233 (LF), C1234 (RF), C1236 (REAR) - WHEEL SPEED SENSOR SIGNAL FAULT

Normal Operation
The wheel speed sensor and sensor ring generate a square wave signal to the anti-lock brake system (ABS) module that is proportional to wheel speed. The ABS module compares wheel speed inputs from all wheel speed sensors to determine an impending wheel lockup. Incorrect tire size can set these DTCs as well.

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