Fail-Safe Chart

DIFFERENTIAL: ACTIVE TORQUE CONTROL 4WD SYSTEM: FAIL-SAFE CHART

1. FAIL-SAFE FUNCTION

* If following malfunctions occur, the 4WD control ECU will stop the function of 4WD control system or partly change the function to control the system.

* If a malfunction occurs in the sensor signal or actuator, the flow of electricity to the linear solenoid of the electrical coupling is prohibited. As a result, the system enters front wheel drive condition.

* When a component of the system malfunctions and the fail-safe function activates, the component operation is prohibited. However, if the system is controlling the component and the fail-safe function activates, the system operation is gradually stopped to prevent sudden changes in the vehicle condition.

* When system control is not possible, the warning light is illuminated to stop operation of the system operation.