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Last Modified: 9-16-2014 6.6 C Doc ID: X39400000RM0JYC Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2109; Throttle / Pedal Position Sensor "A" Minimum Stop Performance; 2015 MY Tundra [08/2014 - ] DTC P2109 Throttle / Pedal Position Sensor "A" Minimum Stop Performance DESCRIPTION The idling speed is controlled by the Electronic Throttle Control System (ETCS). 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 P2109 The ISC learned value is approximately 3 times larger than normal even though the actual intake air amount during idling is within the normal range (up to 1.5 times the normal amount) (5 trip detection logic) Throttle body assembly HINT: If there are deposits in the throttle valve, a decrease in the ISC flow rate may cause engine stall or unstable idling. Therefore, the necessary ISC flow rate for idling is maintained using the ISC learned value and feedback. The ECM stores this DTC if the ISC learned value approaches its limit. The ECM begins monitoring for the DTC detection conditions when the following preconditions are met; 1) the manifold absolute pressure sensor is normal; 2) atmospheric pressure is 85 kPa (638 mmHg) or higher; 3) the vehicle has been driven at has been turned ON (include engine running) for 1 hour or more, the engine is warmed up and conditions for ISC learning are met. INSPECTION PROCEDURE HINT: Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a Since a pending DTC is not stored for this DTC, it takes time to confirm whether the malfunction has PROCEDURE 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2109; Throt... |