Symptom:
*BRAKE WARNING INDICATOR ALWAYS ON
POSSIBLE CAUSES
BRAKE WARNING INDICATOR CIRCUIT SHORT TO GROUND
RED BRAKE WARNING INDICATOR DRIVER CIRCUIT SHORT TO GROUND
PARK BRAKE SWITCH
BRAKE FLUID LEVEL SWITCH
INSTRUMENT CLUSTER
POWERTRAIN CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure that the Parking Brake is disengaged.
With the DRBIIIt in Inputs/Outputs, read the Parking Brake Switch state.
Does the DRBIIIt display 9Closed9 with the Parking Brake disengaged?
All
Yes → Go To 2
No → Go To 4
2 Turn the ignition off.
Disconnect the Park Brake Switch harness connector.
Turn the ignition on.
With the DRBIIIt in Inputs/Outputs, read the Parking Brake Switch state.
Does the DRBIIIt display 9Open9?
All
Yes → Replace the Park Brake Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Turn the ignition off.
Disconnect the Park Brake Switch harness connector.
Disconnect the Instrument Cluster harness connector.
Measure the resistance between ground and the Brake Warning Indicator Driver
circuit.
Is the resistance below 10,000 ohms (should be infinite)?
All
Yes → Repair the Brake Warning Indicator circuit for a short to ground
(between the Park Brake Switch and the Instrument Cluster).
Perform BODY VERIFICATION TEST - VER 1.
No → Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
156
INSTRUMENT CLUSTER
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