Symptom Chart

Refer to ANTI-LOCK BRAKES for Explorer or ANTI-LOCK BRAKES for Mountaineer schematic and connector information.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the anti-lock brake system (ABS) module	Circuitry. ABS module.	Go To PINPOINT TEST H: NO COMMUNICATION WITH THE ABS MODULE .
The red brake warning indicator stays on when the ignition switch is in RUN	Circuitry. Instrument cluster. Brake fluid level sensor. ABS module.	refer to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
The yellow anti-lock brake system (ABS) warning indicator does not self-check	Circuitry. Instrument cluster. ABS module.	refer to INSTRUMENT CLUSTER AND PANEL ILLUMINATION .
Spongy brake pedal with no warning indicator	Air in brake hydraulic system.	refer to BRAKE SYSTEM-GENERAL INFORMATION .
The stability assist system cannot be disabled	Circuitry. Stability assist switch. ABS module.	Go To PINPOINT TEST V: THE STABILITY ASSIST CANNOT BE DISABLED .
The stability assist switch indicator is never/always on	Circuitry. Stability assist switch. Anti-lock brake system (ABS) module.	Go To PINPOINT TEST Y: THE STABILITY ASSIST SWITCH INDICATOR IS NEVER/ALWAYS ON .