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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Engine Control System (2GR-FKS) - Diagnostic Codes (06 Of 10)) >> SFI System >> DTC P0443-13: Evaporative Emission System Purge Control Valve "A" Circuit Open [08/2021 - ] >> Procedure

DTC P0443-13: Evaporative Emission System Purge Control Valve "A" Circuit Open [08/2021 - ]: Procedure

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  1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE EVAP PURGE VSV) 
    GTY930397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a VSV is on
    *b VSV is off
    1. Connect the Techstream to the DLC3.
    2. Disconnect the fuel vapor feed hose (on the canister side) from the purge VSV.
    3. Start the engine.
    4. Turn the Techstream on.
    5. When the purge VSV is operated using the GTS, check whether the port of the purge VSV applies suction to your finger.

      Powertrain > Engine > Active Test 

      Tester Display
      Activate the EVAP Purge VSV

      OK

      Techstream Operation Specified Condition
      ON Purge VSV port applies suction to finger
      OFF Purge VSV port applies no suction to finger

      HINT: 

      Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [06/2018 - ] 

    Result: 

    NG 

    See step  2

  2. INSPECT PURGE VSV 
    1. Inspect the purge VSV.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE PURGE VSV. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV) 
    GTY1084510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Purge VSV)
    1. Disconnect the purge VSV connector.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C20-1 (+B) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - PURGE VSV) 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the purge VSV connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C20-2 (PRG) - C32-65 (PRG) Always Below 1 Ω
      C20-2 (PRG) or C32-65 (PRG) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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