Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
CHECK HARNESS AND CONNECTOR (POWER SOURCE)
INSPECT EGR VALVE ASSEMBLY (No. 1 or No. 2) (POSITION SENSOR)
CHECK HARNESS AND CONNECTOR (EGR VALVE POSITION SENSOR - ECM)
REPLACE EGR VALVE ASSEMBLY (No. 1 or No. 2)
REPAIR OR REPLACE HARNESS OR CONNECTOR
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P0405 Exhaust Gas Recirculation Sensor "A" Circuit Low
DTC P0406 Exhaust Gas Recirculation Sensor "A" Circuit High
DTC P0407 Exhaust Gas Recirculation Sensor "B" Circuit Low
DTC P0408 Exhaust Gas Recirculation Sensor "B" Circuit High
DESCRIPTION
The EGR valve position sensor is mounted on the EGR valve and used for detecting the lift amount of the valve. The lift amount detected by the sensor is provided to the ECM as feedback. The ECM then regulates the lift amount of the valve in accordance with engine running conditions.
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Ignition switch ON for 5 seconds | No. 1 EGR valve position sensor output voltage is less than 0.1 V for 5 seconds (1 trip detection logic). | Open in No. 1 EGR valve position sensor circuit No. 1 EGR valve (EGR valve position sensor) ECM |
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Ignition switch ON for 5 seconds | No. 1 EGR valve position sensor output voltage is more than 4.9 V for 5 seconds (1 trip detection logic). | Short in No. 1 EGR valve position sensor circuit No. 1 EGR valve (EGR valve position sensor) ECM |
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Ignition switch ON for 5 seconds | No. 2 EGR valve position sensor output voltage is less than 0.1 V for 5 seconds (1 trip detection logic). | Open in No. 2 EGR valve position sensor circuit No. 2 EGR valve (EGR valve position sensor) ECM |
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Ignition switch ON for 5 seconds | No. 2 EGR valve position sensor output voltage is more than 4.9 V for 5 seconds (1 trip detection logic). | Short in No. 2 EGR valve position sensor circuit No. 2 EGR valve (EGR valve position sensor) ECM |
MONITOR DESCRIPTION
When the output voltage of the EGR valve position sensor deviates from the normal operating range of 0.1 to 4.9 V for more than 5 seconds, the ECM interprets this as a malfunction of the sensor circuit, and illuminates the MIL.
WIRING DIAGRAM
Refer to DTC P0400 ().
INSPECTION PROCEDURE
- NOTICE:
- After replacing the ECM, the new ECM needs registration () and initialization ().
- HINT:
| 1.CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
Disconnect the EGR valve connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
No. 1 Tester Connection Switch Condition Specified Condition C87-3 (VC) - C87-2 (E2) Ignition switch ON 4.5 to 5.5 V No. 2 Tester Connection Switch Condition Specified Condition C88-3 (VC) - C88-2 (E2) Ignition switch ON 4.5 to 5.5 V
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| OK | |
| 2.INSPECT EGR VALVE ASSEMBLY (No. 1 or No. 2) (POSITION SENSOR) |
Disconnect the EGR valve connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
No. 1 Tester Connection Condition Specified Condition 3 (VC) - 2 (E2) 20°C (68°F) 2.45 to 4.55 kΩ 4 (EGLS) - 2 (E2) 20°C (68°F) 2.45 to 4.55 kΩ No. 2 Tester Connection Condition Specified Condition 3 (VC) - 2 (E2) 20°C (68°F) 2.45 to 4.55 kΩ 4 (EGS2) - 2 (E2) 20°C (68°F) 2.45 to 4.55 kΩ
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| OK | |
| 3.CHECK HARNESS AND CONNECTOR (EGR VALVE POSITION SENSOR - ECM) |
Disconnect the EGR valve connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
No. 1 (LHD) Tester Connection Condition Specified Condition C87-3 (VC) - C45-90 (VCEG) Always Below 1 Ω C87-4 (EGLS) - C45-89 (EGLS) Always Below 1 Ω C87-2 (E2) - C45-87 (EEGL) Always Below 1 Ω No. 2 (LHD) Tester Connection Condition Specified Condition C88-3 (VC) - C45-90 (VCEG) Always Below 1 Ω C88-4 (EGS2) - C45-88 (EGS2) Always Below 1 Ω C88-2 (E2) - C45-87 (EEGL) Always Below 1 Ω No. 1 (RHD) Tester Connection Condition Specified Condition C87-3 (VC) - C46-90 (VCEG) Always Below 1 Ω C87-4 (EGLS) - C46-89 (EGLS) Always Below 1 Ω C87-2 (E2) - C46-87 (EEGL) Always Below 1 Ω No. 2 (RHD) Tester Connection Condition Specified Condition C88-3 (VC) - C46-90 (VCEG) Always Below 1 Ω C88-4 (EGS2) - C46-88 (EGS2) Always Below 1 Ω C88-2 (E2) - C46-87 (EEGL) Always Below 1 Ω
- Standard Resistance (Check for Short):
No. 1 (LHD) Tester Connection Condition Specified Condition C87-3 (VC) or C45-90 (VCEG) - Body ground Always 10 kΩ or higher C87-4 (EGLS) or C45-89 (EGLS) - Body ground Always 10 kΩ or higher No. 2 (LHD) Tester Connection Condition Specified Condition C88-3 (VC) or C45-90 (VCEG) - Body ground Always 10 kΩ or higher C88-4 (EGS2) or C45-88 (EGS2) - Body ground Always 10 kΩ or higher No. 1 (RHD) Tester Connection Condition Specified Condition C87-3 (VC) or C46-90 (VCEG) - Body ground Always 10 kΩ or higher C87-4 (EGLS) or C46-89 (EGLS) - Body ground Always 10 kΩ or higher No. 2 (RHD) Tester Connection Condition Specified Condition C88-3 (VC) or C46-90 (VCEG) - Body ground Always 10 kΩ or higher C88-4 (EGS2) or C46-88 (EGS2) - Body ground Always 10 kΩ or higher
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| OK | |
| 4.REPLACE ECM |
Replace the ECM ().
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| 5.REPLACE EGR VALVE ASSEMBLY (No. 1 or No. 2) |
Replace the EGR valve assembly (No. 1 or No. 2) ().
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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 for 5 seconds.
Enter the following menus: Powertrain / Engine / DTC.
Confirm that the DTC is not output again.
| NEXT | ||
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