Dtc P2109 Throttle / Pedal Position Sensor A Minimum Stop Performance


DESCRIPTION

MONITOR DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109)

CHECK FREEZE FRAME DATA

REMOVE FOREIGN OBJECT (CLEAN THROTTLE BODY WITH MOTOR ASSEMBLY)

READ VALUE USING GTS (ISC LEARNING VALUE)

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


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
P2109
Either condition is met:
  1. With the manifold absolute pressure sensor normal and atmospheric pressure 85 kPa (638 mmHg) or higher (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 learned are met, the ISC learning value is approximately 3 times larger than normal even though the intake manifold pressure when idling is normal (5 trip detection logic).
  2. With the manifold absolute pressure sensor normal and atmospheric pressure 85 kPa (638 mmHg) or higher (elevation 1400 m (4592 ft.) or less), when the engine switch has been turned to on (IG) for 1 hour or more, the engine is warmed up, conditions for ISC learned 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 intake manifold pressure when idling is normal (5 trip detection logic).
Throttle body with motor assembly

MONITOR DESCRIPTION

If there are deposits in the throttle valve, the necessary ISC flow rate for idling is maintained using the ISC learned value and feedback as a decrease in the ISC flow rate may cause engine stall or unstable idling. The ECM stores this DTC if the ISC learned value approaches its limit.

INSPECTION PROCEDURE

HINT:
  1. Read freeze frame data using the GTS. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
  1. 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.
1.CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    Only DTC P2109 is output
    		A
    DTC P2109 and other DTCs are output
    		B
HINT:
If any DTCs other than P2109 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (LandCruiser RM000002ZSO015X.html)
A


2.CHECK FREEZE FRAME DATA

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Using the GTS, check "ISC Learning Value" in the freeze frame data (LandCruiser RM000000PDS15AX.html).

    HINT:
    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 BODY WITH MOTOR ASSEMBLY)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System. Dtc P2109 Throttle / Pedal Position Sensor A Minimum Stop Performance

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

NOTICE:
  1. Make sure that the cloth or your fingers do not get caught in the valve.
  2. Make sure that foreign matter does not enter the throttle valve.
  3. Do not directly apply non-residue solvent to the throttle body with motor assembly or wash the throttle body with motor assembly. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems.
  4. If there is coating material on the edge of the valve, be careful not to remove it.
  5. Push the throttle valve open gently with your finger and check that the throttle valve moves smoothly.

NEXT


4.READ VALUE USING GTS (ISC LEARNING VALUE)

  1. for Automatic Transmission

    1. Perform "Inspection After Repair" after cleaning the throttle body with motor assembly (LandCruiser RM000004NJC03SX.html).

  1. for Manual Transmission

    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 learned value.

  1. Start the engine and fully warm it up.

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

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

  1. Using the GTS, confirm "ISC Learning Value".

    OK:
    The value is half of "ISC Learning Value" recorded in the freeze frame data or less.
    HINT:
    for Automatic Transmission
    Perform "Inspection After Repair" after replacing the throttle body with motor assembly (LandCruiser RM000004NJC03SX.html).


NG
REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY (LandCruiser RM000000Q0P050X.html)
OK

END