Monitor Description

The ECM determines the "actual" throttle position based on the throttle position sensor signal. The "actual" throttle position is compared to the "target" throttle position commanded by the ECM. If the difference of these 2 values exceeds a specified limit, the ECM interprets this as a fault in the ETCS system. The ECM turns on the MIL and sets a DTC.

Start the engine, fully depress the accelerator pedal until the engine speed reaches 5,000 rpm (fully open the throttle valve), and quickly release the accelerator pedal (close the throttle valve).