Symptom:
*BRAKE WARNING INDICATOR ALWAYS ON
POSSIBLE CAUSES
BRAKE FLUID LEVEL SWITCH
BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT SHORT TO GROUND
PARK BRAKE SWITCH
PARK BRAKE SWITCH SENSE CIRCUIT SHORT TO GROUND
CONTROL MODULE
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 NOTE: Diagnose and repair any MIC, Brake, or Communication DTCs
before proceeding with this test.
Disconnect the Brake Fluid Level Switch harness connector.
Measure the resistance of the Brake Fluid Level Switch between pin 1 and pin 2.
Does the resistance measure less than 900 ohms?
All
Yes → Replace the Brake Fluid Level Switch in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Disconnect the CAB Module harness connector, (C2 for ABS equipped vehicles).
Measure the resistance between ground and the Brake Fluid Level Switch Sense
circuit.
Is the resistance below 5.0 ohms?
All
Yes → Repair the Brake Fluid Level Switch Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Turn the ignition off.
Disconnect the Park Brake Switch harness connector.
Turn the ignition on.
Observe the Brake warning indicator.
Did the Brake warning indicator illuminate briefly and then turn off?
All
Yes → Replace the Park Brake Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 4
445
INSTRUMENT CLUSTER