Symptom Chart

Condition	Possible Sources	Action
No communication with the ABS module	Fuse(s) Wiring, terminals or connectors ABS module	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the no communication problem.
The yellow ABS warning indicator is always/never on	DTCs are present in the ABS module Wiring, terminals or connectors Instrument Cluster (IC)	RETRIEVE and RECORD all ABS module DTCs. Go to the ABS Module DTC Chart. If there are no ABS module DTCs present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES article to diagnose the IC.
The yellow stability/traction control indicator ("sliding-car" icon) is always/never on	DTCs are present in the ABS module Wiring, terminals or connectors IC	RETRIEVE and RECORD all ABS module DTCs. Go to the ABS Module DTC Chart. If there are no ABS module DTCs present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES article to diagnose the IC.
Unintended ABS activation, ABS too sensitive, ABS activates on a normal stop	Brake drag	ELIMINATE the base brake system as the cause of the problem. REFER to Diagnosis and Testing in BRAKE SYSTEM - GENERAL INFORMATION article.
	Parking brake shoes out of adjustment (dragging)	CHECK and, if necessary, ADJUST the parking brake shoes. REFER to PARKING BRAKE AND ACTUATION article.
	Wheel speed sensor tone rings Wheel speed sensor Wiring, terminals or connectors	Go to Pinpoint Test K .
The stability/traction control system cannot be disabled	Wiring, terminals or connectors Stability/traction control switch ABS module	Go to Pinpoint Test L .