Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
CHECK HARNESS AND CONNECTOR (ENGINE WIRE HARNESS)
CHECK INJECTOR COMPENSATION CODE
READ VALUE USING GTS (COMPENSATORY INJECTION VOLUME FOR EACH CYLINDER)
PERFORM ACTIVE TEST USING GTS (CONTROL THE SELECT CYLINDER FUEL CUT)
CHECK CYLINDER COMPRESSION PRESSURE OF MALFUNCTIONING CYLINDER
REGISTER INJECTOR COMPENSATION CODE AND PERFORM PILOT QUANTITY LEARNING
CHECK WHETHER DTC OUTPUT RECURS (DTC P0301, P0302, P0303, P0304, P0305, P0306, P0307 OR P0308)
CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION
REPAIR OR REPLACE HARNESS OR CONNECTOR
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P0301 Cylinder 1 Misfire Detected
DTC P0302 Cylinder 2 Misfire Detected
DTC P0303 Cylinder 3 Misfire Detected
DTC P0304 Cylinder 4 Misfire Detected
DTC P0305 Cylinder 5 Misfire Detected
DTC P0306 Cylinder 6 Misfire Detected
DTC P0307 Cylinder 7 Misfire Detected
DTC P0308 Cylinder 8 Misfire Detected
DESCRIPTION
- HINT:
- For more information on the injector assemblies and common rail system, refer to System Description ().
The ECM detects combustion deterioration for a specific cylinder.
*1 | Piezo Actuator | *2 | No. 1 Piston |
*3 | No. 2 Piston | *4 | Three-Way Valve |
*5 | Nozzle Needle | - | - |
*a | Injector Assembly Cross Section Diagram | - | - |
- HINT:
DTC Detection Drive Pattern | DTC Detection Condition | Main Trouble Area | Related Trouble Area |
Warm up the engine and idle it for 60 seconds | Injector Feedback Val #1 to #8 is 5.0 mm3/st and the engine speed fluctuation of No. 1 to No. 8 cylinder is large during idling. (2 trip detection logic) | No. 1 to No. 8 injector assembly Compression pressure | Valve timing Fuel with low cetane number used ECM |
DTC No. | Data List |
P0301 to P0308 | Injection Volume Injection Feedback Val #1 to #8 Common Rail Pressure Target Common Rail Pressure |
- HINT:
Under a stable condition such as idling or running the engine at 2500 rpm without load, Common Rail Pressure is within 5000 kPa of Target Common Rail Pressure.
MONITOR DESCRIPTION
This DTC will be stored if the engine speed fluctuation between each cylinder is large. The ECM monitors changes in the crankshaft rotation speed using the crankshaft position sensor in order to detect improper combustion. The camshaft position sensor also plays a role in determining which cylinder has the problem. The fluctuation counter increases when irregular crankshaft rotation speed variation exceeds the threshold with the engine idling. Therefore, if any one of the cylinders is operating poorly (rough idle), the ECM stores this DTC.
WIRING DIAGRAM
Refer to DTC P0201 ().
INSPECTION PROCEDURE
- NOTICE:
- HINT:
1.CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0301, P0302, P0303, P0304, P0305, P0306, P0307 OR P0308) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Enter the following menus: Engine and ECT / Trouble Codes.
Read the DTCs.
Result | Proceed to |
P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 is output | A |
P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 and other DTCs are output | B |
- HINT:
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A | |
2.CHECK HARNESS AND CONNECTOR (ENGINE WIRE HARNESS) |
Check the wire harness and connector connections.
- OK:
- The wire harness and connectors have been connected securely and there are good connections.
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OK | |
3.CHECK INJECTOR COMPENSATION CODE |
Read the injector compensation codes ().
- OK:
- Compensation codes stored in the ECM match compensation codes of the installed injector assemblies.
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OK | |
4.READ VALUE USING GTS (COMPENSATORY INJECTION VOLUME FOR EACH CYLINDER) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Enter the following menus: Engine and ECT / Data List / Injection Feedback Val #1 to #8.
Read the value.
- Standard value:
- The compensatory injection volume is less than 3.0 mm3/st
- HINT:
Inspect and repair the cylinder that has an improper compensation value according to the following steps.
NEXT | |
5.PERFORM ACTIVE TEST USING GTS (CONTROL THE SELECT CYLINDER FUEL CUT) |
Connect the GTS to the DLC3.
Start the engine and turn the GTS on.
Enter the following menus: Engine and ECT / Active Test / Control the Select Cylinder Fuel Cut / #1 to #8.
Check the 8 cylinders in sequence to identify any faulty cylinders by performing the power-balance inspection.
- HINT:
NEXT | |
6.CHECK CYLINDER COMPRESSION PRESSURE OF MALFUNCTIONING CYLINDER |
- HINT:
- Measure the compression of the cylinder that had a high speed during the "Check the Cylinder Compression" Active Test.
Check the cylinder compression pressure ().
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OK | |
7.REPLACE INJECTOR ASSEMBLY |
Replace the injector assembly ().
- NOTICE:
NEXT | |
8.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 | |
9.REGISTER INJECTOR COMPENSATION CODE AND PERFORM PILOT QUANTITY LEARNING |
Register the injector compensation code ().
Perform the injector pilot quantity learning ().
NEXT | |
10.CHECK WHETHER DTC OUTPUT RECURS (DTC P0301, P0302, P0303, P0304, P0305, P0306, P0307 OR P0308) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Clear the DTCs ().
Turn the engine switch off for 30 seconds or more.
Start the engine.
Warm up the engine (engine coolant temperature is 70°C (158°F) or higher) and idle it for 60 seconds (the shift lever should be in neutral, and the A/C switch and all accessory switches should be off).
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
- HINT:
Enter the following menus: Engine and ECT / Utility / All Readiness.
Input DTC P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308.
Check the DTC judgment result.
GTS Display | Result | Proceed to |
Pending DTC | P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 is output | A |
All Readiness | ABNORMAL | A |
NORMAL | B |
- HINT:
- If STATUS is INCOMPLETE or N/A, increase the idling time.
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A | |
11.REPLACE ECM |
Replace the ECM ().
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12.CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION |
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13.REPAIR OR REPLACE HARNESS OR CONNECTOR |
Repair or replace the harness or connector.
NEXT | |
14.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.
Warm up the engine (engine coolant temperature is 70°C (158°F) or higher) and idle it for 60 seconds (the shift lever should be in neutral, and the A/C switch and all accessory switches should be off).
Confirm that the DTC is not output again.
- HINT:
- Perform the following procedure using the GTS to determine whether or not the DTC judgment has been carried out.
Enter the following menus: Engine and ECT / Utility / All Readiness.
Input DTC P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308.
Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, increase the idling time.
NEXT | ||
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