Fail-Safe Chart

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: FAIL-SAFE CHART

1. FAIL-SAFE OPERATION

* If there is a problem with any sensor signals or actuator, the skid control ECU prohibits the power supply to the brake actuator and informs the ECM of VSC system failure.

The brake actuator turns off the solenoids and the ECM shuts off VSC control (traction control signal) from the skid control ECU accordingly, the result being that it is as if the ABS, TRAC and VSC systems were not installed.

* ABS control is prohibited, but EBD control continues as far as possible. If EBD control is impossible, the BRAKE warning light comes on to warn the driver Diagnosis System.

* If system components have any malfunctions before starting control, the operation stops immediately. If system components have any malfunctions during control, the control stops gradually so as not to trigger a sudden change in vehicle conditions.

If it is impossible to control the systems, the warning/indicator lights come on to inform the driver of malfunctions in the systems Diagnosis System.

ABS, EBD and BA System





TRAC and VSC System: