Symptom Chart

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the anti-lock brake system (ABS) module	Fuse(s) Circuitry ABS module	GO to PINPOINT TEST A .
The red brake warning indicator does not self-check	Circuitry Instrument cluster	REFER to INSTRUMENT CLUSTER .
The red brake warning indicator stays on when the ignition is in RUN	Circuitry Instrument cluster	RETRIEVE all DTCs and GO to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX . If no DTCs are present, REFER to INSTRUMENT CLUSTER .
The yellow anti-lock brake system (ABS) warning indicator is always on	Instrument cluster ABS module	RETRIEVE all DTCs and GO to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX . If no DTCs are present, REFER to INSTRUMENT CLUSTER .
Soft or excessive pedal travel	Hydraulic leak in brake line or hose, fitting, master cylinder or caliper Air in brake system	ELIMINATE base brake system as cause of problem. REFER to BRAKE SYSTEM-GENERAL INFORMATION .
Soft or excessive pedal travel	Hydraulic control unit (HCU)	GO to PINPOINT TEST G .