Anti-Lock Brake System: Diagnosis: Notes

The Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM) has self-diagnostic capability, which can detect system failures. Fault codes stored by EBCM/EBTCM can be displayed using Tech 1 scan tool.

Begin ABS/TCS system diagnosis with PRE-DIAGNOSTIC INSPECTION  . If failures are found during pre-diagnostic inspection, perform necessary repairs, and then proceed with ABS/TCS FUNCTIONAL CHECK  under SELF-DIAGNOSTIC TESTS. The ABS/TCS FUNCTIONAL CHECK will either indicate ABS/TCS system is functioning properly or direct the technician to appropriate diagnostic procedures such as diagnostic tests, symptom diagnosis or BRAKE warning light diagnosis.