Component Inspection

Engine Control
P0638 Throttle Actuator Control Range / Performance - Inspection/Repair:_:Component Inspection

Component Inspection

Check throttle valve for stuck
1. IG "OFF" and disconnect the air hose between throttle body and air mass flow sensor.
2. Check stuck on throttle valve.
3. Is the throttle valve normal?





Check ETC motor resistance
1. IG "OFF" and disconnect ETC Motor & TPS connector.
2. Measure the resistance between ETC motor(+) and (-) terminals of ETC Motor & TPS connector (component side).

Specification :Approx. 0.3 - 100Ohms(20°C)




3. Is the throttle valve normal?