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

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. 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 → See step   5 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Using the Techstream, check "ISC Learning Value" in the freeze frame data. Refer to FREEZE FRAME DATA .

   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: Go to next step 

1. Clean off any deposits from the inside of the throttle body.
   Fig 1: Identifying Throttle Body Cross-Section Diagram

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 body or wash the throttle body. 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.

   HINT: 

   If the throttle valve does not open smoothly, replace the throttle body.

NEXT: Go to next step 

1. Remove the EFI MAIN 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.

   HINT: 

   The A/C switch and all accessory switches should be off.

3. 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.

4. Using the Techstream, confirm "ISC Learning Value".

   OK

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

NG → See step   6 

OK → END