Diagnostic Test
- VERIFY DTC IS ACTIVE NOTE:
Make sure the battery is fully charged before proceeding.
- Turn the ignition on.
- With the scan tool, read the active DTCs.
Does the scan tool display: U0121-00-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE?
Yes
- Refer to NO RESPONSE FROM ABS (ANTILOCK BRAKE SYSTEM MODULE) diagnostic procedure.
No
- Refer to Diagnosis and Testing and perform the Stored Lost Communication DTCs diagnostic procedure.