FAIL SAFE OPERATION
If there is a problem with sensor signals or actuator systems, the skid control ECU (brake actuator assembly) prohibits power supply to the brake actuator assembly and informs the ECM of VSC system failure.
The brake actuator assembly turns off each solenoid and the ECM shuts off VSC control (traction control signal) from the skid control ECU (brake actuator assembly) accordingly, which turns out to be as if the ABS, TRC and VSC systems were not installed.
The ABS control will be prohibited, but EBD control will continue as much as possible. If EBD control is impossible, the brake warning light will come on to warn the driver Click here.
If system components have any malfunctions before starting control, immediately stop the operation. If system components have any malfunctions during control, gradually stop the control so as not to trigger a sudden change in vehicle conditions.
If it is impossible to control the systems, the warning light comes on to inform the driver of termination of the systems Click here.
Tech Tips
If the ABS system malfunctions, the brake system operates normally without the ABS system.
If it is impossible to control the systems, the warning light comes on to inform the driver of termination of the systems
| Malfunction Area | Fail-Safe Operation |
|---|---|
| ABS system | ABS, BA, TRC and VSC control prohibited |
| BA system | ABS, BA, TRC and VSC control prohibited |
| EBD system | ABS, EBD, BA, TRC and VSC control prohibited |
| Malfunction Area | Fail-Safe Operation |
|---|---|
| Engine control system (TRC and VSC systems) |
Before control: Disables control During control: Uses only the brakes to effect control |
| Brake control system (VSC system) |
Before control: Disables control During control: Disables control (by gradually ending control) |
| Brake control system (TRC system) |
Before control: Disables control During control: Disables control (by gradually ending control) |