Monitor Description

The ECM monitors the flow of electrical current through the electronic throttle actuator, and detects malfunctions or open circuits in the throttle motor based on the value of the electrical current. When the current deviates from the standard values, the ECM concludes that there is a fault in the throttle actuator. Or, if the throttle valve is not functioning properly (for example, stuck ON) the ECM concludes that there is a fault and turns on the MIL and a DTC is set.

Example:

When the current is more than 10 A, or the current is less than 0.5 A when the actuator driving duty ratio is exceeding 80%, the ECM concludes that the current is deviated from the standard values, turns on the MIL and a DTC is set.

This monitor runs after the engine is started, idled for 5 seconds and then quickly revved at a high rpm several times.