Brake Warning Indicator Always On - Dodge Ram 2004 Service Manual

Symptom:

*BRAKE WARNING INDICATOR ALWAYS ON

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
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?
Yes → Replace the Brake Fluid Level Switch in accordance with the
→ Go To 2
No
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?
Yes → Repair the Brake Fluid Level Switch Sense circuit for a short to
→ Go To 3
No
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?
Yes → Replace the Park Brake Switch in accordance with the Service
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
ground.
Perform BODY VERIFICATION TEST - VER 1.
Information.
Perform BODY VERIFICATION TEST - VER 1.
INSTRUMENT CLUSTER
445
APPLICABILITY
All
All
All