Symptom Chart

Condition	Possible Sources	Action
No communication with the anti-lock brake system (ABS) module	Battery junction box (BJB) fuse(s): 15(20A) 24(30A) 29 (10A) Circuitry CJB ABS module	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the no communication problem.
The yellow ABS warning indicator is never/always on with no DTCs	Circuitry Instrument cluster ABS module	REFER to INSTRUMENT CLUSTER article.
The red brake warning indicator does not self-check	Circuitry Instrument cluster Brake fluid level sensor	REFER to INSTRUMENT CLUSTER article.
The red brake warning indicator stays on when the ignition switch is in RUN	Circuitry Brake fluid level sensor Instrument cluster ABS module	REFER to INSTRUMENT CLUSTER article.
	Base brakes Brake fluid level Parking brake	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
The yellow ABS warning indicator does not self-check	Circuitry Instrument cluster ABS module	REFER to INSTRUMENT CLUSTER article.
Spongy brake pedal with no warning indicator	Air in brake hydraulic system	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
The traction control is inoperative	Circuitry Traction control switch (TCS) ABS module	Go to Pinpoint Test G .
	Base brake system	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
The traction control indicator is never/always on	Circuitry TCS ABS module	REFER to INSTRUMENT CLUSTER article.
The traction control system cannot be disabled	Circuitry TCS ABS module	Go to Pinpoint Test H .