E: C1233, C1234, C1235, C1236 - Wheel Speed Sensor Input Signal Missing

Pinpoint Test E: DTC C1233, DTC C1234, DTC C1235, DTC C1236-Wheel Speed Sensor Input Signal Missing

Test E1-E7:

Test E8-E9:

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.

Normal Operation
The wheel speed sensor and sensor ring generate a square wave signal to the ABS module that is proportional to the wheel speed. The ABS module compares the wheel speed inputs from all of the wheel speed sensors to determine an impending wheel lockup.

Possible Causes
^ wheel speed sensor
^ wheel speed sensor ring
^ wheel bearing
^ ABS module