Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
INSPECT FUEL SUPPLY PUMP (SUCTION CONTROL VALVE)
READ VALUE USING INTELLIGENT TESTER
READ VALUE USING INTELLIGENT TESTER (FUEL PRESS)
REPLACE PRESSURE LIMITER (COMMON RAIL (for Bank 2))
CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE CONNECTOR - ECM)
REPAIR OR REPLACE HARNESS OR CONNECTOR
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P0088 Fuel Rail / System Pressure - Too High
DESCRIPTION
Refer to System Description ().
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| After idling for 60 seconds, repeat quick engine speed accelerations (to 2500 rpm) for 30 seconds | The fuel pressure of common rail is too high The fuel pressure exceeds 230 MPa (2345 kgf/cm2, 33358 psi) (1 trip detection logic). | Fuel supply pump (suction control valve) Pressure limiter (common rail (for Bank 2)) Open or short in fuel supply pump (suction control valve) circuit ECM |
| DTC No. | Data List |
| P0088 | Fuel Press Target Common Rail Pressure Injection Pressure Correction Target Pump SCV Current |
- HINT:
| Engine Speed | Fuel Press |
| Idling | Approximately 27 to 37 MPa |
| 2500 rpm (No engine load) | Approximately 50 to 70 MPa |
MONITOR DESCRIPTION
The ECM stores this DTC if the fuel pressure inside the common rail is more than 230 MPa (2345 kgf/cm2, 33350 psi). This DTC indicates that: 1) the suction control valve may be stuck open, or 2) there may be a short in the suction control valve 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 start the engine.
- OK:
- Engine does not start.
|
| ||||
| OK | |
| 2.READ VALUE USING INTELLIGENT TESTER |
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.
| Engine Speed | Target Pump SCV Current |
| Idling | 923 to 1123 mA |
| 2500 rpm (No engine load) | 1013 to 1212 mA |
|
| ||||
| OK | |
| 3.READ VALUE USING INTELLIGENT TESTER (FUEL PRESS) |
Connect the intelligent tester to the DLC3.
Start the engine.
Turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Fuel Press, Target Common Rail Pressure.
Check the difference in pressure between Fuel Press and Target Common Rail Pressure.
- OK:
- Difference in pressure between Fuel Press and Target Common Rail Pressure is within +/-5 MPa.
|
| ||||
| OK | |
| 4.REPLACE PRESSURE LIMITER (COMMON RAIL (for Bank 2)) |
Replace the common rail (for Bank 2) ().
|
| ||||
| 5.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
|
| ||||
| OK | |
| 6.REPLACE FUEL SUPPLY PUMP |
Replace the fuel supply pump ().
| NEXT | |
| 7.CHECK DTC OUTPUT |
Connect the intelligent tester to the DLC3.
Clear the DTCs ().
Turn the ignition switch off.
Start the engine.
After idling for 60 seconds, repeat engine speed accelerations (from idling to 2500 rpm) for 30 seconds.
Enter the following menus: Powertrain / Engine / DTC.
Read the DTCs.
| Display (DTC output) | Proceed to |
| P0088 is output | A |
| No DTC is output | B |
|
| ||||
| A | |
| 8.REPLACE ECM |
Replace the ECM ().
|
| ||||
| 9.REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NEXT | |
| 10.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 and start the engine.
After idling for 60 seconds, repeat engine speed accelerations (from idling to 2500 rpm) for 30 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 P0088.
Check that STATUS is NORMAL. If STATUS is INCOMPLETE or UNKNOWN, race the engine to 2500 rpm repeatedly for 30 seconds and increase idling time.
| NEXT | ||
| ||