Dtc P2121 Throttle / Pedal Position Sensor / Switch D Circuit Range / Performance

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (ACCELERATOR PEDAL POSITION SENSOR)

CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM)

REPLACE ACCELERATOR PEDAL ROD ASSEMBLY

CHECK WHETHER DTC OUTPUT RECURS (DTC P2121)

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P2121 Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance


DESCRIPTION

Refer to DTC P2120 (Click here).

P2121
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON
  1. Accelerator pedal fully closed for 3 seconds
  2. Accelerator pedal open partway for 3 seconds
  3. Accelerator pedal fully open for 3 seconds
The difference between VPA and VPA2 is less than 0.4 V, or more than 1.2 V for 0.5 seconds (1 trip detection logic).
  1. Accelerator pedal position sensor circuit
  2. Accelerator pedal position sensor
  3. ECM

Related Data List
DTC No.
Data List
P2121
  1. Accel Sens. No.1 Volt %
  2. Accel Sens. No.2 Volt %
  3. Accel Sensor Out No.1
  4. Accel Sensor Out No.2

WIRING DIAGRAM

Refer to DTC P2120 (Click here).

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.READ VALUE USING INTELLIGENT TESTER (ACCELERATOR PEDAL POSITION SENSOR)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P2121 Throttle / Pedal Position Sensor / Switch D Circuit Range / Performance

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine / Data List / Accel Sens. No.1 Volt % and Accel Sens. No.2 Volt %.

  1. Read the values.

    Standard:
    Accelerator Pedal
    		Accel Sens. No.1 Volt %
    		Accel Sens. No.2 Volt %
    Released
    		10 to 22%
    		24 to 40%
    Depressed
    		52 to 90%
    		68 to 99%
    Result
    Result
    		Proceed to
    NG
    		A
    OK
    		B


B
Go to step 7
A


2.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P2121 Throttle / Pedal Position Sensor / Switch D Circuit Range / Performance

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A31-1 (VCP2) - A38-56 (VCP2)
    		Always
    		Below 1 Ω
    A31-2 (EPA2) - A38-58 (EPA2)
    		Always
    		Below 1 Ω
    A31-3 (VPA2) - A38-54 (VPA2)
    		Always
    		Below 1 Ω
    A31-4 (VCPA) - A38-55 (VCPA)
    		Always
    		Below 1 Ω
    A31-5 (EPA) - A38-57 (EPA)
    		Always
    		Below 1 Ω
    A31-6 (VPA) - A38-53 (VPA)
    		Always
    		Below 1 Ω
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A31-1 (VCP2) - A52-56 (VCP2)
    		Always
    		Below 1 Ω
    A31-2 (EPA2) - A52-58 (EPA2)
    		Always
    		Below 1 Ω
    A31-3 (VPA2) - A52-54 (VPA2)
    		Always
    		Below 1 Ω
    A31-4 (VCPA) - A52-55 (VCPA)
    		Always
    		Below 1 Ω
    A31-5 (EPA) - A52-57 (EPA)
    		Always
    		Below 1 Ω
    A31-6 (VPA) - A52-53 (VPA)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A31-1 (VCP2) or A38-56 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    A31-2 (EPA2) or A38-58 (EPA2) - Body ground
    		Always
    		10 kΩ or higher
    A31-3 (VPA2) or A38-54 (VPA2) - Body ground
    		Always
    		10 kΩ or higher
    A31-4 (VCPA) or A38-55 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A31-5 (EPA) or A38-57 (EPA) - Body ground
    		Always
    		10 kΩ or higher
    A31-6 (VPA) or A38-53 (VPA) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A31-1 (VCP2) or A52-56 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    A31-2 (EPA2) or A52-58 (EPA2) - Body ground
    		Always
    		10 kΩ or higher
    A31-3 (VPA2) or A52-54 (VPA2) - Body ground
    		Always
    		10 kΩ or higher
    A31-4 (VCPA) or A52-55 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A31-5 (EPA) or A52-57 (EPA) - Body ground
    		Always
    		10 kΩ or higher
    A31-6 (VPA) or A52-53 (VPA) - Body ground
    		Always
    		10 kΩ or higher


NG
Go to step 6
OK


3.REPLACE ACCELERATOR PEDAL ROD ASSEMBLY

  1. Replace the accelerator pedal rod assembly (Click here).


NEXT


4.CHECK WHETHER DTC OUTPUT RECURS (DTC P2121)

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off.

  1. Turn the ignition switch to ON.

  1. Fully close the accelerator pedal for 3 seconds, then hold it partway open for 3 seconds, then fully open it for 3 seconds.

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P2121 is output
    		A
    No DTC is output
    		B


B
END
A


5.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 7

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT


7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off.

  1. Turn the ignition switch to ON.

  1. Fully close the accelerator pedal for 3 seconds, then hold it partway open for 3 seconds, then fully open it for 3 seconds.

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Confirm that the DTC is not output again.


NEXT

END