Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
INSPECT FUEL SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)
CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)
CHECK WHETHER DTC OUTPUT RECURS
REPLACE FUEL SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)
PERFORM SUPPLY PUMP INITIALIZATION
REPAIR OR REPLACE HARNESS OR CONNECTOR
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P0627 Fuel Pump Control Circuit / Open
DESCRIPTION
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Idling for 1 second | Even though the CPU (command area inside the ECU) is outputting the suction control valve operation duty, the output monitor signal is absent for 0.5 seconds. (1 trip detection logic) | Open or short in suction control valve circuit Suction control valve (fuel supply pump assembly) ECM |
| DTC No. | Data List |
| P0627 | Common Rail Pressure Target Common Rail Pressure |
- HINT:
Under a stable operating condition such as idling, Common Rail Pressure is within 5000 kPa of Target Common Rail Pressure.
WIRING DIAGRAM
Refer to DTC P0088 ().
INSPECTION PROCEDURE
- NOTICE:
- HINT:
- Read freeze frame data using the GTS. 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.INSPECT FUEL SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE) |
Disconnect the suction control valve connector.
| *1 | Fuel Supply Pump Assembly |
| *2 | Suction Control Valve |
Measure the resistance of the suction control valve.
- OK:
- No open or short circuit malfunction.
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| OK | |
| 2.CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM) |
Disconnect the suction control valve connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
for LHD Tester Connection Condition Specified Condition z64-1 (+B) - C45- 104 (PCV+) Always Below 1 Ω z64-2 (PCV) - C45-105 (PCV-) Always Below 1 Ω z64-1 (+B) or C45- 104 (PCV+) - Body ground Always 10 kΩ or higher z64-2 (PCV) or C45-105 (PCV-) - Body ground Always 10 kΩ or higher
- Standard Resistance:
for RHD Tester Connection Condition Specified Condition z64-1 (+B) - C46- 104 (PCV+) Always Below 1 Ω z64-2 (PCV) - C46-105 (PCV-) Always Below 1 Ω z64-1 (+B) or C46- 104 (PCV+) - Body ground Always 10 kΩ or higher z64-2 (PCV) or C46-105 (PCV-) - Body ground Always 10 kΩ or higher
Reconnect the suction control valve connector.
Reconnect the ECM connector.
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| OK | |
| 3.CHECK WHETHER DTC OUTPUT RECURS |
Connect the GTS to the DLC3
Turn the engine switch on (IG) and turn the GTS on.
Clear the DTCs ().
Start the engine and idle it for 1 second or more.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
| Result | Proceed to |
| No DTC is output | A |
| P0627 is output | B |
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| A | ||
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| 4.REPLACE FUEL SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE) |
Replace the fuel supply pump assembly ().
| NEXT | |
| 5.BLEED AIR FROM FUEL SYSTEM |
Bleed the air from the fuel system ().
Perform PM forced regeneration ().
- HINT:
- When fuel lines are disconnected, air may enter the fuel lines, leading to engine starting trouble. Therefore, perform forced regeneration and bleed the air from the fuel lines.
| NEXT | |
| 6.PERFORM SUPPLY PUMP INITIALIZATION |
Perform supply pump initialization ().
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| 7.REPLACE ECM |
Replace the ECM ().
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| 8.REPAIR OR REPLACE HARNESS OR CONNECTOR |
Repair or replace the harness or connector.
| NEXT | |
| 9.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the GTS to the DLC3.
Clear the DTCs ().
Turn the engine switch off for 30 seconds or more.
Start the engine and idle it for 1 second or more.
Confirm that the DTC is not output again.
| NEXT | ||
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