|
|
5. Disconnect the park brake warning light switch. With a scan tool, observe the park brake switch parameter. If the scan tool indicates that the park brake switch parameter is inactive, go to step 9 . If the 6. Disconnect the brake fluid level switch. With a scan tool, observe the brake warning light parameter. If the scan tool indicates that the brake warning light parameter is on, go to step 10 . If the scan tool does 7. Turn OFF the ignition. Test the signal circuit of the park brake warning light switch for a short to ground. If the condition was found and corrected, go to step 17 . If the condition was not found and corrected, go 8. Turn OFF the ignition. Test the signal circuit of the brake fluid level switch for a short to ground. If the condition was found and corrected, go to step 17 . If the condition was not found and corrected, go to step 9. Inspect for poor connections at the harness connector of the park brake warning light switch. If the condition was not found and corrected, go to step 17 . If the condition was not found and corrected, go to 10. Inspect for poor connections at the harness connector of the brake fluid level switch. If the condition was found and corrected, go to step 17 . If the condition was not found and corrected, go to step 14 . 11. Inspect for poor connections at the harness connector of the BCM. If the condition was found and corrected, go to step 17 . If the condition was not found and corrected, go to step 15 . 12. Inspect for poor connections at the harness connector of the instrument Panel cluster. If the condition was found and corrected, go to step 17 . If the condition was not found and corrected, go to step 16 . 13. Replace the park brake warning light switch. See PARK BRAKE WARNING LIGHT SWITCH under REMOVAL & INSTALLATION. If the repair was completed, go to step 17 . 14. Replace the brake fluid level switch. See MASTER CYLINDER FLUID LEVEL SENSOR under REMOVAL & INSTALLATION. If the repair was completed, go to step 17 . 15. Replace the Body Control Module. See appropriate BODY CONTROL MODULE article in COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT. After repairs are complete, go to 16. Replace the IPC. If the repair was completed, go to step 17 . 17. Operate the system in order to verify the repair. If the condition was corrected, system okay. If the condition was not corrected, go to step 2 . BRAKE WARNING INDICATOR INOPERATIVE 1. If the hydraulic brakes operation has been reviewed and the necessary inspection performed, go to step 2 . If the hydraulic brakes operation has not been reviewed and the necessary inspection has not been 2. Turn ON the ignition, with the engine OFF. Observe the brake warning indicator. If the brake warning indicator illuminates briefly during the bulb check, go to step 3 . If the brake warning indicator does not 3. Turn ON the ignition, with the engine off. Apply the park brake. If the brake warning indicator illuminates, go to step 4 . If the brake warning indicator does not illuminate, go to step 7 .
2004 Hummer H2 2003-04 BRAKES Disc - Hummer
|