Dtc P0405 Exhaust Gas Recirculation Sensor A Circuit Low

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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 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.

P0405
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).
  1. Open in No. 1 EGR valve position sensor circuit
  2. No. 1 EGR valve (EGR valve position sensor)
  3. ECM

P0406
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).
  1. Short in No. 1 EGR valve position sensor circuit
  2. No. 1 EGR valve (EGR valve position sensor)
  3. ECM

P0407
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).
  1. Open in No. 2 EGR valve position sensor circuit
  2. No. 2 EGR valve (EGR valve position sensor)
  3. ECM

P0408
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).
  1. Short in No. 2 EGR valve position sensor circuit
  2. No. 2 EGR valve (EGR valve position sensor)
  3. 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 (Click here).

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
HINT:
  1. 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.
  2. Data List items "EGR Lift Sensor Volt %" and "EGR Lift Sensor Volt % #2" are values calculated by converting the EGR position sensor output voltage of 0 to 5 V to a percentage from 0 to 100%.
1.CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0405 Exhaust Gas Recirculation Sensor A Circuit Low

  1. Disconnect the EGR valve connector.

  1. 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


NG
Go to step 3
OK


2.INSPECT EGR VALVE ASSEMBLY (No. 1 or No. 2) (POSITION SENSOR)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0405 Exhaust Gas Recirculation Sensor A Circuit Low

  1. Disconnect the EGR valve connector.

  1. 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


NG
Go to step 5
OK


3.CHECK HARNESS AND CONNECTOR (EGR VALVE POSITION SENSOR - ECM)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0405 Exhaust Gas Recirculation Sensor A Circuit Low

  1. Disconnect the EGR valve connector.

  1. Disconnect the ECM connector.

  1. 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


NG
Go to step 6
OK


4.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 7

5.REPLACE EGR VALVE ASSEMBLY (No. 1 or No. 2)

  1. Replace the EGR valve assembly (No. 1 or No. 2) (Click here).



NEXT
Go to step 7

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT


7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off.

  1. Turn the ignition switch to ON for 5 seconds.

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Confirm that the DTC is not output again.


NEXT

END