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*BRAKE WARNING INDICATOR INOPERATIVE (CONTINUED) For the Instrument Cluster circuit diagram (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - SCHEMATICS For a complete wiring diagram Refer to Section 8W. Possible Causes (Z420) BRAKE FLUID LEVEL SENSOR GROUND CIRCUIT OPEN (B25) PARK BRAKE SWITCH SENSE CIRCUIT OPEN (B20) BRAKE FLUID LEVEL SENSE CIRCUIT OPEN PARK BRAKE SWITCH BRAKE FLUID LEVEL SENSOR ANTI-LOCK BRAKES MODULE INSTRUMENT CLUSTER Diagnostic Test 1. FAULT LOCATION NOTE: Diagnose and repair any MIC, ABS, or Communication DTCs before proceeding with this test. Is the Brake warning indicator only inoperative using the Park Brake? Yes >> Go To 2 No >> Go To 4 2. PARK BRAKE SWITCH Disconnect the Park Brake Switch harness connector. Connect a jumper wire between the (B25) Park Brake Switch Sense Turn the ignition on. Observe the BRAKE indicator. Did the BRAKE indicator illuminate? Yes >> Replace the Park Brake Switch in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1. (Refer to No >> Go To 3 8J - 76 INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS DR/DH |