ABS Light: Description and Operation

The amber Anti-Lock Brake System (ABS) warning indicator lamp is located on the instrument panel in the instrument cluster.

When the ignition key is turned to the ON position, the amber ABS warning indicator lamp is lit until the Controller Anti-Lock Brakes (CAB) completes it's self-tests and turns off the indicator lamp (approximately 4 seconds). The amber ABS warning indicator lamp will illuminate when the CAB detects a condition that results in the shutdown of ABS function or when the instrument cluster does not receive messages from the CAB. The CAB sends a message across the PCI bus circuit that informs the instrument cluster to turn on the amber ABS warning indicator lamp.

NOTE: If the vehicle is equipped with traction control, the TRAC OFF indicator lamp will illuminate anytime the amber ABS warning indicator lamp is ON.

Under most conditions, when the amber ABS warning indicator lamp is ON only the ABS function of the brake system is affected the base brake system and the ability to stop the vehicle are not affected.