Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
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)
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 ().
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Ignition switch ON Accelerator pedal fully closed for 3 seconds Accelerator pedal open partway for 3 seconds 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). | Accelerator pedal position sensor circuit Accelerator pedal position sensor ECM |
| DTC No. | Data List |
| P2121 | Accel Sens. No.1 Volt % Accel Sens. No.2 Volt % Accel Sensor Out No.1 Accel Sensor Out No.2 |
WIRING DIAGRAM
Refer to DTC P2120 ().
INSPECTION PROCEDURE
- NOTICE:
- After replacing the ECM, the new ECM needs registration () and initialization ().
- 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) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Accel Sens. No.1 Volt % and Accel Sens. No.2 Volt %.
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 | Proceed to |
| NG | A |
| OK | B |
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| A | |
| 2.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM) |
Disconnect the accelerator pedal position sensor connector.
Disconnect the ECM connector.
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
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| OK | |
| 3.REPLACE ACCELERATOR PEDAL ROD ASSEMBLY |
Replace the accelerator pedal rod assembly ().
| NEXT | |
| 4.CHECK WHETHER DTC OUTPUT RECURS (DTC P2121) |
Connect the intelligent tester to the DLC3.
Clear the DTCs ().
Turn the ignition switch off.
Turn the ignition switch to ON.
Fully close the accelerator pedal for 3 seconds, then hold it partway open for 3 seconds, then fully open it for 3 seconds.
Enter the following menus: Powertrain / Engine / DTC.
Read the DTCs.
| Result | Proceed to |
| P2121 is output | A |
| No DTC is output | B |
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| A | |
| 5.REPLACE ECM |
Replace the ECM ().
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| 6.REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NEXT | |
| 7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the intelligent tester to the DLC3.
Clear the DTCs ().
Turn the ignition switch off.
Turn the ignition switch to ON.
Fully close the accelerator pedal for 3 seconds, then hold it partway open for 3 seconds, then fully open it for 3 seconds.
Enter the following menus: Powertrain / Engine / DTC.
Confirm that the DTC is not output again.
| NEXT | ||
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