Rear Anti-Lock Bulb Test

The yellow rear anti-lock warning light is used to indicate a malfunction in and a deactivation of the ABS system.
To check anti-lock brake system warning lamp, turn ignition key to the On position. The yellow warning lamp should glow for approximately two seconds and then shutoff. If warning lamp fails to glow, or glows continuously, refer to DIAGNOSTIC CHARTS for warning lamp condition chart and diagnostic tests. In addition, if warning lamp continues to glow during vehicle operation, check anti-lock brake system for stored codes, refer to OBTAINING FLASHOUT CODES.