Charts A-19 To A-21: Anti-Lock Light & Stoplight CKT
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1988 Oldsmobile Ninety-Eight, 1988 Oldsmobile Delta 88, 1987 Oldsmobile Ninety-Eight, 1987 Oldsmobile Delta 88, and 1986 Oldsmobile Ninety-Eight. However, it is still accessible from the selected car via links, so may be relevant.
- "ANTI-LOCK" light is powered by 20-amp gauge fuse. Light is turned on (grounded), if main relay is not enabled by EBCM or EBCM detects fault in system (pin No. 27). A diode protects EBCM pin No. 27 and "ANTI-LOCK" light circuit from current overload.
- Stoplight switch power is directed to EBCM (pin No. 12) whenever brake pedal is depressed. This informs EBCM to increase sensitivity to wheel sensor input signal.