Throttle Valve Closed Position Learning

Throttle Valve Closed Position Learning

Description

Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time the harness connector of the electric throttle control actuator or ECM is disconnected or electric throttle control actuator inside is cleaned.

Operation Procedure

With SDT

1 Turn ignition switch ON.
2 Select "CLSD THL POS LEARN" in "Utility" mode of "Engine / Powertrain" using SDT.
3 Follow the instructions on the SDT display.
4 Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.

Without SDT

1 Start the engine.

NOTE:
Engine coolant temperature is 25°C (77°F) or less before engine starts.

2 Warm up the engine.

NOTE:
Raise engine coolant temperature until it reaches 65°C (149°F) or more.

3 Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.