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Brake Warning Indicator Always On

WARNING: This page is about a different car, the 2002 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you review the Hydraulic Brakes operation and perform the necessary inspections? If so, go to next step. If not, go to step SYMPTOMS - HYDRAULIC BRAKE  under TROUBLE SHOOTING.
  2. Inspect the brake fluid level. Is the brake fluid level okay? If so, go to next step. If not, go to step BRAKE FLUID LOSS  under SYMPTOM TESTING.
  3. Does the DIC display the Check Brake Fluid message? If so, go to next step. If not, go to step  5 .
  4. With a scan tool, observe the LOW BRAKE FLUID LEVEL parameter in the Instrument Panel Cluster data list. Does the scan tool indicate that the LOW BRAKE FLUID LEVEL parameter is Off? If so, condition is intermittent. If not, go to step  6 .
  5. Turn OFF the ignition. Disconnect the park brake switch. Turn ON the ignition, with the engine OFF. Observe the Red Brake indicator on the Instrument Panel Cluster (IPC). Does the Red Brake indicator illuminate? If so, go to step  7 . If not, go to step  9 .
  6. Turn OFF the ignition. Disconnect the brake fluid level switch. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Low Brake Fluid Level parameter. Does the scan tool indicate that the Low Brake Fluid Level parameter is Off? If so, go to step  10 . If not, go to step  8 .
  7. Test the signal circuit of the park brake switch for a short to ground. Did you find and correct the condition? If so, go to step  15 . If not, go to step  11 .
  8. Test the signal circuit of the brake fluid level switch for a short to ground. Did you find and correct the condition? If so, go to step  15 . If not, go to step  11 .
  9. Inspect for poor connections at the harness connector of the park brake switch. Did you find and correct the condition? If so, go to step  15 . If not, go to step  12 .
  10. Inspect for poor connections at the harness connector of the brake fluid level switch. Did you find and correct the condition? If so, go to step  15 . If not, go to step  13 .
  11. Inspect for poor connections at the harness connector of the instrument cluster (IPC). Did you find and correct the condition? If so, go to step  15 . If not, go to step  14 .
  12. Replace the park brake switch. See PARK BRAKE WARNING LAMP SWITCH  under REMOVAL & INSTALLATION. Did you complete the repair? If so, go to step  15 .
  13. Replace the brake fluid level switch. See MASTER CYLINDER FLUID LEVEL SENSOR  under REMOVAL & INSTALLATION. Did you complete the repair? If so, go to step  15 .
  14. Replace the Instrument Panel Cluster (IPC). See appropriate INSTRUMENT PANEL article in ACCESSORIES & EQUIPMENT. Did you complete the repair? If so, go to next step.
  15. Operate the system in order to verify the repair. Did you correct the condition? If so, then system is okay. If not, go to  2 .
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