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Brake Warning Indicator Always On

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. If hydraulic brake system diagnostic system check has been performed, go to next step. If hydraulic brake system diagnostic system check has not been performed, see HYDRAULIC BRAKE SYSTEM DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ON the ignition, with the engine OFF. Release the parking brake. Using a scan tool, observe the Park Brake Switch parameter in the Instrument Panel Cluster data list. Does the scan tool indicate that the Park Brake Switch parameter is Off? If so, problem is intermittent. If not, go to next step.
  3. Turn OFF the ignition. Disconnect the parking brake switch. See PARKING BRAKE SWITCH  under REMOVAL & INSTALLATION as necessary to access parking brake switch electrical connector. Turn ON the ignition, with the engine OFF. Using a scan tool, observe the Park Brake Switch parameter. Does the scan tool indicate that the Park Brake Switch parameter is Off? If so, go to step  5. If not, go to next step.
  4. Test the signal circuit of the park brake switch for a short to ground. For wiring, see appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Did you find and correct the condition? If so, go to step  9. If not, go to step  6.
  5. Inspect for poor connections at the harness connector of the parking brake switch. Did you find and correct the condition? If so, go to step  9. If not, go to step  7.
  6. Inspect for poor connections at the harness connector of the Instrument Panel Cluster (IPC). Did you find and correct the condition? If so, go to step  9. If not, go to step  8.
  7. Replace the parking brake switch. See PARKING BRAKE SWITCH  under REMOVAL & INSTALLATION. After repairs are complete, go to step  9.
  8. Replace the Instrument Panel Cluster (IPC). See INSTRUMENT PANEL CLUSTER under REMOVAL & INSTALLATION in appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. After repairs are complete, go to next step.
  9. Operate the system in order to verify the repair. Did you correct the condition? If so, repair is complete. If not, go to step  2.
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