Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
INSPECT FUEL SUPPLY PUMP (SUCTION CONTROL VALVE)
READ VALUE USING INTELLIGENT TESTER (TARGET PUMP SCV CURRENT)
READ VALUE USING INTELLIGENT TESTER (FUEL PRESS)
CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE CONNECTOR - ECM)
CHECK WHETHER DTC OUTPUT RECURS
READ VALUE USING INTELLIGENT TESTER (FUEL PRESS)
CHECK WHETHER DTC OUTPUT RECURS
REPLACE COMMON RAIL (for Bank 1) (FUEL PRESSURE SENSOR)
REPAIR OR REPLACE HARNESS OR CONNECTOR
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P1229 Fuel Pump System
DESCRIPTION
Refer to the System Description ().
DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
Idling for 60 seconds | The actual fuel pressure exceeds the target fuel pressure by 40 MPa or more for 10 seconds (1 trip detection logic). | Short in fuel supply pump (suction control valve) circuit Fuel supply pump (suction control valve) Fuel pressure sensor (common rail (for Bank 1)) ECM |
DTC No. | Data List |
P1229 | Fuel Press Target Common Rail Pressure Injection Pressure Correction Target Pump SCV Current |
- HINT:
Under a stable condition such as idling or running the engine at 2500 rpm without load, Fuel Press is within +/-5 MPa of Target Common Rail Pressure.
MONITOR DESCRIPTION
The ECM stores this DTC if the actual fuel pressure inside the common rail remains higher than the target fuel pressure, despite the ECM closing the suction control valve. This DTC indicates that the suction control valve may be stuck open, or there may be a short in its circuit.
If this DTC is stored, the ECM enters fail-safe mode and limits the engine power. The fail-safe mode continues until the ignition switch is turned off.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- 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.INSPECT FUEL SUPPLY PUMP (SUCTION CONTROL VALVE) |
Disconnect the suction control valve connector and then check if the engine starts.
- OK:
- Engine does not start.
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OK | |
2.READ VALUE USING INTELLIGENT TESTER (TARGET PUMP SCV CURRENT) |
Connect the intelligent tester to the DLC3.
Start the engine.
Turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Target Pump SCV Current.
Read the value.
- OK:
Engine Speed Target Pump SCV Current Idling 923 to 1123 mA 2500 rpm (No engine load) 1013 to 1212 mA
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OK | |
3.READ VALUE USING INTELLIGENT TESTER (FUEL PRESS) |
Connect the intelligent tester to the DLC3.
Start the engine and turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Fuel Press.
Check that the internal fuel pressure of the common rail is within the specification below.
- OK:
- Fuel Press is within +/-5 MPa of Target Common Rail Pressure when engine is idling and running at 2500 rpm without load.
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4.CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE CONNECTOR - 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 (Check for open):
for LHD Tester Connection Condition Specified Condition z64-2 (PCV) - C45-105 (PCV-) Always Below 1 Ω z64-1 (+B) - C45-106 (PCV+) Always Below 1 Ω for RHD Tester Connection Condition Specified Condition z64-2 (PCV) - C46-105 (PCV-) Always Below 1 Ω z64-1 (+B) - C46-106 (PCV+) Always Below 1 Ω
- Standard Resistance (Check for short):
for LHD Tester Connection Condition Specified Condition z64-2 (PCV) or C45-105 (PCV-) - Body ground Always 10 kΩ or higher z64-1 (+B) or C45-106 (PCV+) - Body ground Always 10 kΩ or higher for RHD Tester Connection Condition Specified Condition z64-2 (PCV) or C46-105 (PCV-) - Body ground Always 10 kΩ or higher z64-1 (+B) or C46-106 (PCV+) - Body ground Always 10 kΩ or higher
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OK | |
5.CHECK WHETHER DTC OUTPUT RECURS |
Clear DTCs ().
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Start the engine.
Idle the engine for 60 seconds.
Enter the following menus: Powertrain / Engine / DTC.
Read the DTCs.
Result | Proceed to |
P1229 is output | A |
No DTC is output | B |
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A | |
6.REPLACE FUEL SUPPLY PUMP |
Replace the fuel supply pump ().
NEXT | |
7.READ VALUE USING INTELLIGENT TESTER (FUEL PRESS) |
Connect the intelligent tester to the DLC3.
Start the engine and turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Fuel Press.
Check that the internal fuel pressure of the common rail is within the specification below.
- OK:
- Fuel Press is within +/-5 MPa of Target Common Rail Pressure when engine is idling and running at 2500 rpm without load.
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OK | |
8.CHECK WHETHER DTC OUTPUT RECURS |
Clear the DTCs ().
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Start the engine.
Idle the engine for 60 seconds.
Enter the following menus: Powertrain / Engine / DTC.
Read the DTCs.
Result | Proceed to |
P1229 is output | A |
No DTC is output | B |
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A | |
9.REPLACE ECM |
Replace the ECM ().
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10.REPLACE COMMON RAIL (for Bank 1) (FUEL PRESSURE SENSOR) |
Replace common rail (for Bank 1) ().
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11.REPAIR OR REPLACE HARNESS OR CONNECTOR |
NEXT | |
12.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the intelligent tester to the DLC3.
Clear the DTCs ().
Turn the ignition switch off.
Start the engine.
Idle the engine for 60 seconds.
Confirm that the DTC is not output again.
- HINT:
- Perform the following procedure using the tester to determine whether or not the DTC judgment has been carried out.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input DTC P1229.
Check that STATUS is NORMAL. If STATUS is INCOMPLETE or UNKNOWN, increase idling time.
NEXT | ||
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