Diagnostic Procedure

BRAKE WARNING INDICATOR INOPERATIVE - DIAGNOSTIC PROCEDURE

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 .	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 . 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 . No : Go To 4	All
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 . No : Repair the Brake Warning Indicator circuit for an open. Perform BODY VERIFICATION TEST .	All