Pinpoint Test I : The Brake Warning Indicator Is Never On: Notes

Refer to Instrument Cluster for schematic and connector information.

Normal Operation and Fault Conditions 

See Brake Warning Indicator and ABS/Brake/Stability-Traction Control System Indication descriptions and see Brake Fluid Level Switch component description. Refer to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

If the brake (red) warning indicator request, brake warning indicator request or red brake warning indicator request messages are missing or invalid for less than 5 seconds, the IPC defaults the ABS warning indicator to the last indication state (on or off), based upon the last message received.

Possible Sources 

• Brake fluid level switch
• Parking brake system concern
• BCM
• IPC

Visual Inspection and Diagnostic Pre-checks 

Inspect the:

• brake fluid level switch for signs of any external damage.
• wiring harness for signs of a pinched harness causing a shorted circuit.