RABS Self-Test Capability
The anti-lock electronic control module performs a system test during start-up and normal operation. Red BRAKE warning light indicates low fluid level or parking brake applied. If a problem is detected, the control module will be deactivated and a Yellow REAR ANTI-LOCK warning light will come on. Both lights should come on for approximately 2 seconds when ignition is turned on or when cranking engine.
When Yellow REAR ABS warning light illuminates during normal operation, the system has detected a problem and stored a Diagnostic Trouble Code (DTC). Loss of power to control module will cause system to be deactivated and REAR ABS light to be illuminated, but will not set a DTC.