VEHICLE STABILITY CONTROL SYSTEM FAIL-SAFE CHART


  1. FAIL-SAFE OPERATION


    • If there is a problem with sensor signals or actuator systems, the skid control ECU prohibits power supply to the brake actuator assembly and informs the ECM of a VSC system malfunction.

      The brake actuator assembly 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.

    • 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 control so as not to trigger a sudden change in vehicle operation.

      If it is impossible for control to continue, the warning light comes on to inform the driver of system control termination Click here.

    ABS, EBD and BA Systems
    Malfunction 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.
    TRC and VSC Systems
    Malfunction Area Control Method

    Engine control system

    (TRC and VSC system)

    Before control: Disables control.

    During control: Uses only the brakes to perform control.

    Brake control system

    (VSC system)

    Before control: Disables control.

    During control: Uses only the engine to perform control.

    Brake control system

    (TRC system)

    Before control: Disables control.

    During control: Uses only the engine to perform control.