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Pinpoint Test D: 4X4 Control Module Received No/Invalid Data From Abs Module

NOTE: This test must be carried out on a hard surface in an area without traffic.

NOTE: Conduct Steps 1 through 10 outlined in Inspection and Verification prior to carrying out this test.

D1 CHECK FOR ABS MODULE DTCs
- Carry out the ABS module self-test.
- Review the results of the ABS self-test.
- Are DTCs present?
1. YES : REFER to VEHICLE DYNAMIC SYSTEMS article for further diagnosis of the ABS system.
2. NO : Go to D2.
D2 CHECK THE WHEEL SPEED SENSORS
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: PID/DATA Monitor and Record
- Monitor the wheel speed sensors while driving the vehicle at a constant 48 km/h (30 mph).
- Do the 4 wheel speed sensors match the speedometer and are they within 2 km/h (1.2 mph) of each other?
1. YES : The system is operating correctly at this time. CLEAR the DTCs. REPEAT the self-test.
2. NO : REFER to VEHICLE DYNAMIC SYSTEMS article for further diagnosis of the ABS system.