Dtc P0443 Evaporative Emission Control System Purge Control Valve Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Ur-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

CONFIRMATION DRIVING PATTERN

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR EVAP CONTROL)

INSPECT PURGE VSV

INSPECT PURGE VSV (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

PERFORM CONFIRMATION DRIVING PATTERN

DTC P0443 Evaporative Emission Control System Purge Control Valve Circuit


DESCRIPTION

To reduce hydrocarbon emissions, evaporated fuel from the fuel tank is routed through a charcoal canister to the intake manifold for combustion in the cylinders.
The ECM changes the duty signal sent to the purge VSV (Vacuum Switching Valve for Purge Control) so that the intake amount of hydrocarbon emissions is appropriate for the driving conditions (engine load, engine speed, vehicle speed, etc.) after the engine is warmed up.

DTC No.
DTC Detection Condition
Trouble Area
P0443
Terminal voltage of the ECM output circuit does not correspond with the drive signals sent from the ECM to the purge VSV (1 trip detection logic).
  1. Open or short in purge VSV circuit
  2. Purge VSV
  3. ECM

CONFIRMATION DRIVING PATTERN


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0443 Evaporative Emission Control System Purge Control Valve Circuit

  1. Connect the GTS to the DLC3.
  2. Turn the engine switch on (IG) and turn the GTS on.
  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
  4. Turn the engine switch off and wait for at least 30 seconds.
  5. Turn the engine switch on (IG) and turn the GTS on.
  6. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher [A].
    HINT:
    The A/C switch and all accessory switches should be off.
  7. Idle the engine for 15 minutes or more [B].
    HINT:
    Check the EVAP (Purge) VSV item in the Data List. When the value of this item is between 5 and 95%, the judgment will be performed.
  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
  9. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  11. Input the DTC: P0443.
  12. Check the DTC judgment result.

    GTS Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform steps [D] through [E].
  13. Drive the vehicle at a constant speed between 40 and 60 km/h (25 and 38 mph) for 10 minutes [D].
    CAUTION:
    When performing the confirmation driving pattern, obey all speed limits and traffic laws.
  14. Check the DTC judgment result [E].

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0443 Evaporative Emission Control System Purge Control Valve Circuit


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the GTS. 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, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
1.PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR EVAP CONTROL)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0443 Evaporative Emission Control System Purge Control Valve Circuit

  1. Connect the GTS to the DLC3.

  1. Disconnect the vacuum hose (charcoal canister side) from the purge VSV.

  1. Start the engine.

  1. Turn the GTS on.

  1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.

  1. When the purge VSV is operated using the GTS, check whether the port of the purge VSV applies suction to your finger.

    OK:
    Tester Operation
    		Specified Condition
    VSV ON
    		Purge VSV port applies suction to finger
    VSV OFF
    		Purge VSV port applies no suction to finger

  1. Reconnect the vacuum hose to the purge VSV.



NG
Go to step 2
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)

2.INSPECT PURGE VSV

  1. Inspect the purge VSV (Click here).



NG
REPLACE PURGE VSV (Click here)
OK


3.INSPECT PURGE VSV (POWER SOURCE)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0443 Evaporative Emission Control System Purge Control Valve Circuit

  1. Disconnect the purge VSV connector.

  1. Turn the engine switch on (IG).

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C55-1 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Purge VSV)

  1. Reconnect the purge VSV connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR OR REPLACE FUSE (PURGE VSV - NO. 1 INTEGRATION RELAY)
OK


4.CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

  1. Disconnect the purge VSV connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    C55-2 - C46-63 (PRG)
    		Always
    		Below 1 Ω
    C55-2 or C46-63 (PRG) - Body ground
    		Always
    		10 kΩ or higher

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    C55-2 - C45-63 (PRG)
    		Always
    		Below 1 Ω
    C55-2 or C45-63 (PRG) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the purge VSV connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.PERFORM CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).

  1. Turn the engine switch off and wait for at least 30 seconds.

  1. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

  1. Idle the engine for 15 minutes or more.

  1. Turn the GTS on.

  1. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  1. Input the DTC: P0443.

  1. Check the DTC judgment result.

    Result
    Result
    		Proceed to
    NORMAL (DTC is not output)
    		A
    ABNORMAL (DTC P0443 is output)
    		B
    HINT:
    If the judgment result shows INCOMPLETE or N/A, drive the vehicle at a constant speed between 40 and 60 km/h (25 and 38 mph) for 10 minutes and check the DTC judgment result again.


B
REPLACE ECM (Click here)
A

CHECK FOR INTERMITTENT PROBLEMS (Click here)