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 turn on multiple indicators for situations and 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 | Stability-Traction Control Indicator Status | Stability-Traction Control Disabled Indicator Status |
|---|---|---|---|---|
| Parking brake applied | Off | On | Off | Off |
| Low brake fluid level or brake fluid level input concern | Off | On | Off | Off |
| Stability-traction control event | Off | Off | Flashing | Off |
| Stability-traction control disabled by driver | Off | Off | Off | On |
| Single wheel speed sensor faults | On | Off | On | On |
| 2 or 3 wheel speed sensor faults | On | On | On | On |
| HCU valve fault | On | On | On | On |
| ABS module fault | On | On | On | On |
| HCU pressure sensor fault (master cylinder pressure input) | Off | On | On | On |
| ABS battery voltage faults. | On or Off | Flashing | On | On |
| ABS pump motor fault | On | On | On | On |
| ABS low brake booster vacuum or vacuum sensor fault | On | Off | Off | Off |
| Steering wheel angle sensor center not found fault | Off | Off | On | On |
| Vehicle Identification Number (VIN) mismatch | Off | On | On | On |
| ACC and ABS both active | Off | Off | On | Off |