SFI SYSTEM, Diagnostic DTC:P2109

DTC Code DTC Name
P2109 Throttle / Pedal Position Sensor "A" Minimum Stop Performance

DESCRIPTION

The idle 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 idle speed is maintained at the target idle speed.

DTC No. DTC Detection Condition Trouble Area
P2109

Either condition is met:

(5 trip detection logic)


  • With atmospheric pressure 85 kPa (638 mmHg) or more (elevation 1400 m (4592 ft.) or less), when the engine coolant temperature is 45°C (113°F) or less at engine start, the engine is warmed up and conditions for ISC learning are met, the ISC learning value is approximately 3 times larger than normal even though the mass air flow when idling is normal.

  • With atmospheric pressure 85 kPa (638 mmHg) or more (elevation 1400 m (4592 ft.) or less), when the engine switch has been turned to ON for 1 hour or more, the engine is warmed up, conditions for ISC learning are met and the vehicle has been driven at a speed of 30 km/h (19 mph) or more at least once, the ISC learning value is approximately 3 times larger than normal even though the mass air flow when idling is normal.

 Throttle with motor body assembly

INSPECTION PROCEDURE

Tech Tips


  • Read freeze frame data using the intelligent tester. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.


  • Since a pending DTC is not stored for this DTC, it takes time to confirm whether the malfunction has been successfully repaired by checking for this DTC. When confirming whether the malfunction has been successfully repaired, compare "ISC Learning Value" recorded in the freeze frame data with "ISC Learning Value" in the Data List after repairs have been made to save time.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P2109 is output A
      DTC P2109 and other DTCs are output B

      Tech Tips

      If any DTCs other than P2109 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Using the tester, check "ISC Learning Value" in the freeze frame data Click here.

      Tech Tips

      Be sure to confirm "ISC Learning Value" in the freeze frame data as it is used when confirming whether the malfunction has been successfully repaired.


    NEXT

  3. REMOVE FOREIGN OBJECT (CLEAN THROTTLE WITH MOTOR BODY ASSEMBLY)

    A01CAJXE05

    1. Clean off any deposits from the inside of the throttle with motor body assembly.


      1. Push open the throttle valve and wipe off any carbon from the valve and bore using a cloth soaked in non-residue solvent.

      Note


      • Make sure that the cloth or your fingers do not get caught in the valve.

      • Make sure that foreign matter does not enter the throttle valve.

      • Do not directly apply non-residue solvent to the throttle with motor body assembly or wash the throttle with motor body assembly. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems.

      • If there is coating material on the edge of the valve, be careful not to remove it.

      • Push the throttle valve open gently with your finger and check that the throttle valve moves smoothly.


    NEXT

  4. READ VALUE USING INTELLIGENT TESTER (ISC LEARNING VALUE)


    1. Remove the EFI and ETCS fuses at the same time, wait 60 seconds or more, and then reinstall the fuses to reset the ISC learning value.

    2. Start the engine and fully warm it up.

    3. Leave the vehicle idle for 3 minutes or more and check that the engine speed is at the standard idle speed.

      Tech Tips

      Check the freeze frame data and make sure that the vehicle conditions are the same as when the DTC was stored.

    4. Using the intelligent tester, confirm "ISC Learning Value".

      OK
      The value is half of "ISC Learning Value" recorded in the freeze frame data or less.

    NG

    REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Click here

    OK

    END