DTC P1109: Throttle Deposit Malfunction; DTC P2109: Throttle / Pedal Position Sensor "A" Minimum Stop Performance [05/2013 - ]: Description

The idling speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is comprised of a throttle actuator, which operates the throttle valve, and a throttle position sensor, which detects the opening amount of the throttle valve. The ECM controls the throttle actuator to adjust the throttle valve opening amount so that the idling speed is maintained at the target idling speed.

DTC No.	DTC Detection Condition	Trouble Area
P1109	ISC learning value is 95% or more of the maximum learning ISC learning value, and 50% or more deposit is accumulated for 10 seconds continuously. (5 trip detection logic)	Throttle with motor body assembly
P2109	One of the following conditions is met (1 trip detection logic): The throttle position sensor opening angle when learning the fully-closed position is less than -5.025°or more than 5.025°. When the throttle actuator current is off, the difference between the actual throttle position and the fully-closed position is less than 1.175°.	Throttle with motor body assembly

HINT:

The ISC learned value is the calculated intake air amount corresponding to the throttle opening amount necessary to maintain the idling speed.
This malfunction is only detected once per trip. After it has been detected once, the system will not monitor for the malfunction for the rest of the trip.
The system uses the throttle with motor body assembly and mass air flow meter assembly to detect this malfunction.