Section 49 (Anti-Lock Brake System): Diagnosis: Notes

WARNING: This page is about a different car, the 1997 Oldsmobile Aurora and 1997 Buick Riviera. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When using Tech 1 scan tool for diagnostics, ABS/TCS is disabled by EBCM/EBTCM. ANTI-LOCK warning indicator will illuminate indicating only normal power assist braking is available. After diagnostics have been completed using Tech 1 scan tool, disconnect scan tool from Data Link Connector (DLC) and turn ignition off for a least 10 seconds before road testing. This procedure is done to reset EBCM/EBTCM.

NOTE: To diagnose ABS/TCS, manufacturer recommends using Tech 1 scan tool, DVOM and ABS Pinout Box (J-38716).

The EBCM/EBTCM has self-diagnostic capability, which can detect system failures. Diagnostic trouble codes stored by EBCM/EBTCM can be displayed using scan tool. See USING TECH 1 SCAN TOOL. Begin ABS/TCS diagnosis with PRE-DIAGNOSTIC INSPECTION procedure.