F

Pinpoint Test F: DTC C1222, C1233, DTC C1234, DTC C1235, DTC C1236-Wheel Speed Sensor Input Signal Missing/Mismatch

Tests F1-F2 Continued:

Tests F2 - F4:

Normal Operation
The wheel speed sensor and sensor ring generate a square wave signal to the 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
^ ABS module
^ wheel speed sensor ring
^ wheel speed sensor