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Home >> Cadillac >> 2001 >> Seville SLS >> Repair and Diagnosis >> Electrical >> Gauges >> Analog Instrument Panels >> System Tests >> Test I: Brake Warning Indicator Inoperative

Test I: Brake Warning Indicator Inoperative

  1. If hydraulic brake diagnostic system check has been performed, go to next step. If hydraulic brake diagnostic system check has not been performed, perform HYDRAULIC BRAKE DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Cycle ignition switch from OFF to RUN position, and observe Red BRAKE warning indicator. If Red BRAKE warning indicator does not illuminate during bulb check, go to next step. If Red BRAKE warning indicator illuminate during bulb check, go to step  11 .
  3. Apply parking brake. If Red BRAKE warning indicator does not illuminate, go to next step. If Red BRAKE warning indicator illuminates, go to step  5 .
  4. Turn ignition switch to OFF position. Release parking brake. Disconnect brake fluid level switch harness connector. Connect a 3-amp fused jumper wire between brake fluid level switch harness connector terminals "A" (Purple wire) and "B" (Black/White wire). Turn ignition switch to RUN position. If Red BRAKE warning indicator does not illuminate, go to step  7 . If Red BRAKE warning indicator illuminates, go to step  10 .
  5. Turn ignition switch to OFF position. Disconnect park brake switch harness connector. Connect a 3-amp fused jumper wire between ground and park brake switch harness connector terminal "A" (Black wire). Turn ignition switch to RUN position. If Red BRAKE warning indicator does not illuminate, go to next step. If Red BRAKE warning indicator illuminates, go to step  9 .
  6. Inspect Light Blue wire for an open or high resistance between park brake switch harness connector terminal "A" and Instrument Panel Cluster (IPC) harness connector C2 terminal B1. If problem does not exist, go to step  11 . If problem exists, repair Light Blue wire as necessary. After repair, go to step  15 .
  7. Inspect Purple wire for an open or high resistance between brake fluid level switch harness connector terminal "A" and IPC harness connector C2 terminal B4. If problem does not exist, go to next step. If problem exists, repair Purple wire as necessary. After repair, go to step  15 .
  8. Inspect Black/White wire for an open or high resistance between ground and brake fluid level switch harness connector terminal "B". Ground point is located on left side of engine compartment, on left radiator support. If problem does not exist, go to step  11 . If problem exists, repair Black/White wire as necessary. After repair, go to step  15 .
  9. Inspect park brake switch harness connector and case ground for poor connections. If problem does not exist, go to step  12 . If problem exists, repair park brake switch harness connector or case ground as necessary. After repair, go to step  15 .
  10. Inspect brake fluid level switch harness connector for poor connections. If problem does not exist, go to step  13 . If problem exists, repair brake fluid level switch as necessary. After repair, go to step  15 .
  11. Inspect IPC harness connector for poor connections. If problem does not exist, go to step  14 . If problem exists, repair IPC harness connector as necessary. After repair, go to step  15 .
  12. Replace park brake switch. After repair, go to step  15 .
  13. Replace brake fluid level switch. After repair, go to step  15 .
  14. Replace IPC, then go to next step.
  15. Operate system to verify repair. If system is not operating correctly, repeat test beginning at step  2 .
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