– Throttle Actuator Control Module circuit poor electrical connection
– Check throttle body for binding-Clean throttle body
– Throttle body actuator malfunction
– Defective throttle body
– Engine hard to start
– Rough or erratic idle speed
The throttle actuator control module determines the throttle valve target position according to the signal received and operates the throttle actuator to move the throttle valve to the target position. The actual throttle valve position is determined by TP sensor A installed in the throttle body.
The throttle actuator control module compares the throttle valve target opening angle and the actual throttle valve opening angle from TP sensor A, and when the difference exceeds the specification, the throttle actuator control module transmits the malfunction data to the ECM/PCM. When the ECM/PCM receives the malfunction data from the throttle actuator control module,
the ECM/PCM detects the malfunction of the throttle actuator system and a DTC is stored.