DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [12/2015 - 08/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. Read the DTCs.
   RESULT
   
   

   Result	Proceed to
   DTC P2121 is output	A
   DTC P2121 and other DTCs are output	B

   HINT: 

   If any DTCs other than P2121 are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2015 - 08/2016] )

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2.
5. Read the values displayed on the Techstream.

   Standard Voltage

   Accelerator Pedal Operation	Accel Sensor Out No. 1	Accel Sensor Out No. 2
   Released	0.5 to 1.1 V	1.2 to 2.0 V
   Depressed	2.6 to 4.5 V	3.4 to 4.75 V

   TEXT IN ILLUSTRATION
   
   

   *a	Depressed
   *b	Released

Result: 

OK 

CHECK FOR INTERMITTENT PROBLEMS 

(Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2015 - 08/2016] )

Result: 

NG 

See step  3

1. Replace the accelerator pedal sensor assembly (Refer to REMOVAL [12/2015 - 08/2016] ).

Result: 

NEXT 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Clear the DTCs (Refer to DTC CHECK / CLEAR [12/2015 - 08/2016] ).
5. Turn the ignition switch off and wait for at least 30 seconds.
6. Turn the ignition switch to ON and turn the Techstream on.
7. Start the engine and warm it up.
8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
10. Input the DTC: P2121.
11. Check the DTC judgment result.
    RESULT
    
    

    Result	Proceed to
    NORMAL (DTC is not output)	A
    ABNORMAL (DTC P2121 is output)	B

Result: 

A 

END 

Result: 

B 

REPLACE ECM 

(Refer to REMOVAL [12/2015 - 08/2016] )