ABS/ASC+T Warning Lamps/Diagnosis

Both the ABS and ASC warning lamps illuminate when the ignition is switched on. The lamps go out after approximately 2 seconds (self test check).

The ASC lamp will flash during regulation.

The ASC lamp will be on permanently with a faulted system or if the ASC is manually switched off.

The ABS and ASC lamps will be on permanently with faults that affect the ABS system (both systems off line).





The Teves ABS/ASC+T control module contains extensive fault monitoring capabilities. The "+T" traction control as well as the ABS processing electronics are monitored by the dual (redundancy) processor principle. The control module performs a self test every time the ignition key is switched "ON." This includes activation of all the solenoids and the ADS II motor to check the working circuits. The return pump is checked after the engine is started and the vehicle is moving.

The ABS/ASC+T control module is coded for automatic or standard transmission. Always verify the control module with the identification page when testing or troubleshooting with the Service Tester/MoDiC.

Faults that affect ABS will also cause the ASC+T to go off line. However, some faults that affect ASC+T will not affect ABS operation, (i.e., DME interfaces).

Always use the latest diagnostic software available when testing or troubleshooting ABS/ASC problems.