Monitor Description

The ECM monitors the flow of electrical current through the electronic throttle actuator, and detects malfunctions or open circuits in the throttle actuator based on the value of the electrical current. When the current deviates from the standard, 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 more than 80 %. The ECM concludes that the current is out of the normal range, turns on the MIL and a DTC is set.