ABS/Brake/Stability-Traction Control System Indication

The brake/stability-traction control system indication is controlled almost entirely by the ABS module. The ABS module can illuminate multiple indicators for various fault conditions. The following table provides a summary of the basic fault conditions and the indicators that are illuminated for each condition.

NOTE: Refer to the NORMAL OPERATION AND FAULT CONDITION description before each brake/stability-traction control system indicator Pinpoint Test (PPT) for the IPC default action for network/missing message conditions.

Event/Fault Condition	ABS Warning Indicator Status	Brake Warning Indicator Status	Electric Park Brake Indicator Status	Stability-Traction Control Indicator Status	Stability-Traction Control Disabled Indicator Status
Parking brake applied	Off	On	Off	Off	Off
Low brake fluid level or brake fluid level input concern	Off	On	Off	Off	Off
Stability-traction control event	Off	On or off based on driver request	Off	Flashing	Off
Stability-traction control disabled by driver	Off	On or off based on driver request	Off	Off	On
Single wheel speed sensor faults	On	On or off based on driver request	Off	On	On
2 or 3 wheel speed sensor faults	On	Flashing or on	On	On	On
HCU valve fault	On	On	On	On	On
ABS module fault	On	Flashing or on	On	On	On
HCU pressure sensor fault (master cylinder pressure input)	Off	On	Off	On	On
ABS battery voltage faults	On	Flashing or on	On	On	On
ABS pump motor fault	On	On	On	On	On
ABS low brake booster vacuum or vacuum sensor fault	On	On	On	On	On
Steering wheel angle sensor center not found fault	Off	Off	Off	On	On
Parking brake switch fault	On	Flashing or on	Off	Off	Off
Vehicle Identification Number (VIN) mismatch	Off	Flashing or on	On	Off	Off
ACC and ABS both active	Off	Off	Off	Flashing	Off