Diagnostic Test
- CHECK FOR AN ACTIVE DTC NOTE:
Inspect the tires for improper air pressure and or mismatched tires before continuing, repair as necessary.
- Turn the ignition on.
- With the scan tool, read ABS DTCs and record on the repair order.
- With the scan tool, erase DTCs.CAUTION:
Make sure brake capability is available before road testing.
- Road test the vehicle over 40 km/h (25 mph).
- With the scan tool, read ABS DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
- CHECK FOR CORRECT TIRES PROGRAMMED INTO BCM
- Inspect all four tires on the vehicle and note the size of each tire.NOTE:
A non-production size tire cannot be programmed into the BCM. The production Powertrain, with the production size tires, is the only emissions certified configuration that is available for reprogramming.
- Verify the correct Tire/wheel information is programmed in the BCM.
Is the correct value programmed in the BCM?
Yes
- Replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
- Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
No
- Program the correct Tire/Wheel information in the BCM.
- Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
- Inspect all four tires on the vehicle and note the size of each tire.