Diagnostic Procedure
DIAGNOSTIC INFORMATION AND PROCEDURES CHART (BRAKE WARNING INDICATOR INOPERATIVE)
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition off. Perform the INSTRUMENT CLUSTER SELF TEST . Did the Brake Warning Indicator illuminate during the Self Test? Yes --> Go To 2 No --> Replace the Instrument Cluster in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 2 | Turn the ignition off. Disconnect the Instrument Cluster C2 harness connector. Check connectors - Clean/repair as necessary. Measure the voltage between the Brake Warning Indicator circuit and ground. Is there any voltage present? Yes --> Repair the Brake Warning Indicator circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
All |
| 3 |
NOTE:
Ensure that the Instrument Cluster harness connector is connected. Turn the ignition off.Disconnect the Brake Warning Indicator Switch (Pressure Switch) harness connector.Connect a jumper wire between cavity 1 and cavity 2.Disconnect the Park Brake Switch harness connector.Connect a jumper wire between the Brake Warning Indicator circuit and ground.Turn the ignition on and observe the Brake Warning Indicator.Does the Brake Warning Indicator illuminate?Yes --> Replace the Park Brake Switch in accordance with the Service Information.Perform BODY VERIFICATION TEST - VER 1 .No --> Go To 4 |
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| 4 | Turn the ignition off. Disconnect the Instrument Cluster C2 harness connector. Disconnect the Park Brake Switch harness connector. Disconnect the Brake Warning Indicator Switch harness connector. Connect a jumper wire between cavity 1 and cavity 2. Measure the resistance of the Brake Warning Indicator circuit. Is the resistance below 5.0 ohms? Yes --> Replace the Brake Warning Indicator Switch in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Repair the Brake Warning Indicator circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . |
All |