ABS and Brake Warning Indicators

The amber ABS warning indicator is located in the instrument cluster. It is used to inform the driver that the antilock function has been turned off. The ABS warning indicator is indirectly controlled by the CAB. The CAB will send a message across the PCI Bus that informs the instrument cluster to turn the ABS warning indicator ON or OFF. If the 25-way CAB connector is not connected, the instrument cluster will not receive a message from the CAB via the PCI BUS circuit. The instrument cluster will then turn on the ABS warning indicator.

The red BRAKE warning indicator is also located in the instrument cluster. It can be activated in several ways. Application of the parking brake or a low fluid signal from the fluid level switch located in the master cylinder reservoir will cause the indicator to come on.