ABS Warning Lamp

DESCRIPTION
The amber ABS warning lamp is located on the right side of the message center located at the top of the instrument panel.

OPERATION
When the ignition key is turned to the ON position, the amber ABS warning lamp is lit until the CAB completes its self-tests and turns off the lamp (approximately 4 seconds). The amber ABS warning lamp will illuminate when the CAB detects a condition that results in the shutdown of ABS function, or when the body controller does not receive a CCD message from the CAB. The CAB turns on the amber ABS warning lamp by grounding the circuit.

Under most conditions, when the amber ABS warning 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.

The amber ABS warning lamp is controlled by the CAB and the body controller through a diode located in the junction block. The CAB and body controller control the amber ABS warning lamp by directly grounding the circuit.