Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the anti-lock brake system (ABS) module	Battery junction box (BJB) fuse(s): (20 A). (10A) (vehicles built after 11/2004).	GO to PINPOINT TEST A .
	Central junction box (CJB) fuse 46 (20A) (vehicles built before 11/2004).
	Circuitry.
	CJB.
	ABS module.
The yellow anti-lock brake system (ABS) warning indicator is never/always on	Circuitry.	REFER to INSTRUMENT CLUSTER .
	Instrument cluster.
	ABS module.
The red brake warning indicator does not self-check	Circuitry.	REFER to INSTRUMENT CLUSTER .
	Instrument cluster.
	Brake fluid level sensor.
The red brake warning indicator stays on when the ignition switch is in RUN	Circuitry.	REFER to INSTRUMENT CLUSTER .
	Brake fluid level sensor.
	Instrument cluster.
	Anti-lock brake system (ABS) module.
	Base brakes.	REFER to BRAKE SYSTEM-GENERAL INFORMATION .
	Parking brake.	REFER to BRAKE SYSTEM-GENERAL INFORMATION .
The yellow anti-lock brake system (ABS) warning indicator does not self-check	Circuitry.	REFER to INSTRUMENT CLUSTER .
	Instrument cluster.
	ABS module.
Spongy brake pedal with no warning indicator	Air in brake hydraulic system.	REFER to BRAKE SYSTEM-GENERAL INFORMATION .
The traction control is inoperative	Circuitry.	GO to PINPOINT TEST H .
	Traction control switch (TCS).
	Anti-lock brake system (ABS) module.
	Base brake system.	REFER to BRAKE SYSTEM-GENERAL INFORMATION .
The traction control indicator is never/always on	Circuitry.	REFER to INSTRUMENT CLUSTER .
	Traction control switch (TCS).
	Anti-lock brake system (ABS) module.
The traction control system cannot be disabled	Circuitry.	GO to PINPOINT TEST I .
	Traction control switch (TCS).
	Anti-lock brake system (ABS) module.