Symptom Chart

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. 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	Circuitry. ABS module.	Go To PINPOINT TEST A
The red brake warning indicator stays on when the ignition switch is in RUN	Circuitry. Instrument cluster. Brake fluid level sensor. Anti-lock brake system (ABS) module.	REFER to INFORMATION, GAUGES & WARNING DEVICES .
The yellow anti-lock brake system (ABS) warning indicator does not self check	Circuitry. Instrument cluster. ABS module.	REFER to INFORMATION, GAUGES & WARNING DEVICES .
Spongy brake pedal with no warning indicator	Air in brake hydraulic system.	REFER to INFORMATION, GAUGES & WARNING DEVICES .
The stability assist system cannot be disabled	Circuitry. Stability assist switch. Anti-lock brake system (ABS) module.	Go To PINPOINT TEST O .
The stability assist switch indicator is never/always on	Circuitry. Stability assist switch. Anti-lock brake system (ABS) module.	Go To PINPOINT TEST R .