VEHICLE STABILITY CONTROL SYSTEM FAIL-SAFE CHART
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FAIL SAFE OPERATION
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If there is a problem with sensor signals or the brake actuator system, the skid control ECU prohibits power supply to the brake actuator and informs the ECM of VSC the system malfunction.
The brake actuator turns off the solenoids and the ECM stops its VSC control according to signals from the skid control ECU. The vehicle will operate in a manner similar to a vehicle that is not equipped with ABS, TRC and VSC systems.
ABS control will be prohibited, but EBD control will continue to the extent that EBD control is possible. If EBD control is impossible, the brake warning light will come on to warn the driver Click here.
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If a VSC system component malfunctions before VSC control begins, VSC control will be prohibited. If a system component malfunctions during VSC control, the system will gradually stop performing the control so as not to trigger a sudden change in vehicle operation.
If it is impossible to control the systems, the warning light will come on to inform the driver of system control termination Click here.
ABS, EBD and BA System Malfunctioning Area Control Method 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 Tech Tips
A malfunction in either the ABS or BA system will result in identical operation with ABS, BA, TRC and VSC system control being prohibited.
TRC and VSC System Malfunctioning Area Control Method 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: Uses only the engine to effect control
Brake control system
(TRC system)
Before control: Disables control
During control: Disables control (by gradually ending control)
Tech Tips
As for the TRC and VSC systems, different systems prohibit different controls depending on the malfunctioning component.
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