For 1990-2009 cars only
Brake Warning System Circuit Description for Buick Park Avenue 1998
The BRAKE indicator is controlled by the IPC. To determine when to illuminate the IPC monitors the following inputs:
| • | The ignition switch input at terminal A7 (CKT 39, PNK). When the ignition switch is in the RUN or START positions, the IPC to performs a bulb check by briefly illuminating the indicator. |
| • | The park brake switch input at terminal B14 (CKT 1134, LT BLU). When the park brake is applied, the park brake switch closes and the IPC detects a low (ground) condition at terminal B14 (CKT 1134, LT BLU). If the ignition switch is in RUN, the IPC illuminates the indicator. |
| • | The brake fluid level switch input at terminal B15 (CKT 1684, ORN/BLK). When the brake fluid level is low, the brake fluid level switch closes and the IPC detects a low (ground) condition at terminal B15 (CKT 1684, ORN/BLK). If the ignition switch is in RUN, the IPC illuminates the indicator. |
