Test 28A - Wheel Speed Sensor Speed Comparison

NOTE: You must perform Test 1A, before proceeding with this test.

PROCEDURE
1. If any other wheel speed sensor diagnostic trouble codes are present, repair them before proceeding with this test.
2. Have an assistant drive the vehicle while you monitor all wheel speed sensor signals with the Diagnostic Read-Out Box (DRB).
3. Drive the vehicle straight ahead, accelerating slowly to a maximum speed of 24 Km/h (15 mph).
4. Look for any signal(s) that read behind the others by more than 5 Km/h (3 mph). Refer to the trouble code list below and perform the indicated test.


Test List
RR Wheel Speed Sensor Signal Test 9A

LR Wheel Speed Sensor Signal Test 10A

RF Wheel Speed Sensor Signal Test 11A - Right Front Wheel Speed Sensor

LF Wheel Speed Sensor Signal Test 12A - Left Front Wheel Speed Sensor