DTC P2109: Throttle / Pedal Position Sensor "A" Minimum Stop Performance [08/2015 - 08/2018]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109)

Connect the Techstream to the DLC3.
Turn the ignition switch ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

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.

Result:

GO TO DTC CHART

Refer to:

DIAGNOSTIC TROUBLE CODE CHART [08/2015 - 10/2016]

DIAGNOSTIC TROUBLE CODE CHART [10/2016 - 08/2017]

DIAGNOSTIC TROUBLE CODE CHART [08/2017 - 08/2018]

Result:

See step 2

CHECK FREEZE FRAME DATA
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 [08/2015 - 08/2017] Refer to FREEZE FRAME DATA [08/2017 - 08/2018] ).
  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.
Result:

NEXT

See step 3
REMOVE FOREIGN OBJECT (CLEAN THROTTLE BODY ASSEMBLY)

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1. Clean off any deposits from the inside of the throttle body.
  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 assembly.
Result:

NEXT

See step 4
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE)
1. Perform "Inspection After Repair" after cleaning the throttle body. Refer to:
  INITIALIZATION [08/2015 - 08/2017]
  
  INITIALIZATION [08/2017 - 08/2018]
2. Connect the Techstream to the DLC3.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / ISC Learning Value.
5. Read the value.
  OK
  
  The value is half of "ISC Learning Value" recorded in the freeze frame data or less.
  
  HINT:
  
  Perform "Inspection After Repair" after replacing the throttle body. Refer to
  
  INITIALIZATION [08/2015 - 08/2017]
  
  INITIALIZATION [08/2017 - 08/2018]
Result:

OK

END

Result:

NG

REPLACE THROTTLE BODY ASSEMBLY

(Refer to REMOVAL [08/2015 - 08/2018] )