SFI SYSTEM EVAP System

RELATED DTCS

DTC No. Monitoring Item See page
P043E Reference orifice clogged (built into canister pump module)

Click here

P043F Reference orifice high-flow (built into canister pump module)
P0441

  • Purge VSV (Vacuum Switching Valve) stuck closed

  • Purge VSV stuck open

  • Purge flow

Click here

P0451 Canister pressure sensor (built into canister pump module) signal noise

Click here

P0452 Canister pressure sensor (built into canister pump module) voltage low
P0453 Canister pressure sensor (built into canister pump module) voltage high
P0455 EVAP gross leak

Click here

P0456 EVAP small leak
P2401 Leak detection pump stuck off (built into canister pump module)

Click here

P2402 Leak detection pump stuck on (built into canister pump module)
P2419 Vent valve stuck closed (built into canister pump module)
P2420 Vent valve stuck open (vent) (built into canister pump module)

Click here

P2610 Soak timer (built into ECM)

Click here

If any EVAP system DTCs are output, the malfunctioning area can be determined using the table below.

A01I3FLE02

Note

If the reference pressure difference between the first and second checks is more than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) will all be stored.

DESCRIPTION

A01I2YME01
Text in Illustration
*1 Purge VSV *2 Fuel Vapor Feed Hose (EVAP Hose) (to Intake Manifold)
*3 Fuel Vapor Feed Hose (EVAP Hose) (from Canister) *4

Canister Pump Module

- Canister Pressure Sensor

- Leak Detection Pump

- Vent Valve
*5 Canister *6 No. 1 Canister
*7 No. 2 Canister *8 Canister Filter
*9 Air Inlet Port *10 Fuel Tank Cap Assembly
*11 Fuel Tank - -
*a Location of EVAP (Evaporative Emission) System *b Purge Line

Tech Tips

The canister pressure sensor, the leak detection pump and the vent valve are built into the canister pump module.

A01I5REE01
Text in Illustration
*1 Canister Pump Module *2 Intake Manifold
*3 Purge VSV *4 Throttle Valve
*5 Canister *6 No. 1 Canister
*7 No. 2 Canister *8 Cut-off Valve
*9 Fuel Tank *10 Air Cleaner
*11 ECM *12 Canister Filter
*13 Soak Timer *14 Roll-Over Valve
*15 Fuel Tank Cap Assembly - -
*a EVAP System Circuit - -

Note

In the EVAP system of this vehicle, turning on the vent valve does not seal off the EVAP system. To check for leaks in the EVAP system, disconnect the air inlet vent hose and apply pressure from the atmospheric side of the canister.

While the engine is running, if a predetermined condition (closed-loop, etc.) is met, the purge VSV is opened by the ECM and fuel vapors stored in the canister are purged to the intake manifold. The ECM changes the duty cycle ratio of the purge VSV to control purge flow volume.

The purge flow volume is also determined by the intake manifold pressure. Atmospheric pressure is allowed into the canister through the vent valve to ensure that the purge flow is maintained when negative pressure (vacuum) is applied to the canister.

The following two monitors run to confirm appropriate EVAP system operation.


  1. Key-off monitor

    This monitor checks for EVAP (evaporative emission) system leaks and canister pump module malfunctions. The monitor starts 5 hours* after the power switch is turned off. At least 5 hours are required for the fuel to cool down to stabilize the EVAP pressure, thus making the EVAP system monitor more accurate.

    The leak detection pump creates negative pressure (vacuum) in the EVAP system and the pressure is measured. Finally, the ECM monitors for leaks from the EVAP system, and malfunctions in both the canister pump module and purge VSV based on the EVAP pressure.

    Tech Tips

    *: If the engine coolant temperature is not less than 35°C (95°F) 5 hours after the power switch is turned off, the monitor check starts 2 hours later. If it is still not less than 35°C (95°F) 7 hours after the power switch is turned off, the monitor check starts 2.5 hours later.

  2. Purge flow monitor

    The purge flow monitor consists of the 2 monitors. The 1st monitor is conducted every time and the 2nd monitor is activated if necessary.


    • The 1st monitor

      While the engine is running and the purge VSV (Vacuum Switching Valve) is on (open), the ECM monitors the purge flow by measuring the EVAP pressure change. If negative pressure is not created, the ECM begins the 2nd monitor.

    • The 2nd monitor

      The vent valve is turned on (closed) and the EVAP pressure is then measured. If the variation in the pressure is less than 0.5 kPa(gauge) [3.751 mmHg(gauge)], the ECM interprets this as the purge VSV being stuck closed, illuminates the MIL and stores DTC P0441 (2 trip detection logic).


    • Atmospheric pressure check:


      • In order to ensure reliable malfunction detection, the variation between the atmospheric pressures, before and after of the purge flow monitor, is measured by the ECM.

    A01I5PXE01
    Text in Illustration
    *1 ECM *2 Soak Timer
    *3 Fuel Cap *4 Canister Filter
    *5 Fuel Tank *6 Canister Pressure Sensor
    *7 Canister Pump Module *8 Canister
    *9 No. 1 Canister *10 No. 2 Canister
    *a EVAP Purge Flow *b to Intake Manifold
    *c Purge VSV: on *d Leak Detection Pump: off
    *e Reference Orifice (0.02 inch) *f Vent Valve: off
    Component Operation
    Canister, No. 1 canister Contains activated charcoal to absorb EVAP (Evaporative Emissions) generated in fuel tank.
    No. 2 canister Temporarily collects EVAP (Evaporative Emission) generated in the fuel tank.
    Cut-off valve Located in fuel tank. Valve floats and closes when fuel tank is 100% full.
    Purge VSV (Vacuum Switching Valve) Opens or closes line between canister and intake manifold. ECM uses purge VSV to control EVAP purge flow. In order to discharge EVAP absorbed by canister to intake manifold, ECM opens purge VSV. EVAP discharge volume to intake manifold controlled by purge VSV duty cycle (current-carrying time). (Open: on, Close: off)
    Roll-over valve Located in fuel tank. Valve closes by its own weight when vehicle overturns to prevent fuel from spilling out.
    Soak timer Built into ECM. To ensure accurate EVAP monitor, measures 5 hours (+/-15 min) after power switch is turned off. This allows fuel to cool down, stabilizing EVAP pressure. When approximately 5 hours elapsed, ECM activates (refer to fig. 3).
    Canister pump module Consists of (a) to (d) below. Canister pump module cannot be disassembled.
    (a) Vent valve Vents and closes EVAP system. When ECM turns valve on, EVAP system is closed. When ECM turns valve off, EVAP system is vented. Negative pressure (vacuum) is created in EVAP system to check for EVAP leaks by closing purge VSV, turning on vent valve (closing it) and operating leak detection pump (refer to fig. 1).
    (b) Canister pressure sensor Indicates pressure as voltages. ECM supplies regulated 5 V to pressure sensor, and uses feedback from sensor to monitor EVAP system pressure (refer to fig. 2).
    (c) Leak detection pump Creates negative pressure (vacuum) in EVAP system for leak check.
    (d) Reference orifice Has opening with 0.02 inch diameter. Vacuum is produced through orifice by closing purge VSV, turning off vent valve and operating leak detection pump, to monitor reference pressure. Reference pressure is used when checking for small EVAP leaks.
    A01I5PHE05
    Text in Illustration
    *1 Canister *2 Reference Orifice (0.02 Inch)
    *3 Canister Pressure Sensor - -
    *a Canister Pump Module (fig. 1) *b Airflow
    *c Condition: Purge Flow *d Condition: Leak Check
    *e Vent Valve: Off (vent) *f to Canister Filter (Atmosphere)
    *g Leak Detection Pump: Off *h Vent Valve: On (closed)
    *i Leak Detection Pump: On - -
    A01I3GTE79
    A01I5K7E02

WIRING DIAGRAM

Refer to DTC P0451 Click here.

INSPECTION PROCEDURE

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Tech Tips


  • Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.

  • Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

PROCEDURE


  1. CONFIRM DTC


    1. Turn the power switch off and wait for 10 seconds.

    2. Turn the power switch on (IG).

    3. Turn the power switch off and wait for 10 seconds.

    4. Connect the Techstream to the DLC3.

    5. Turn the power switch on (IG) and turn the Techstream on.

    6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    7. Confirm DTCs and freeze frame data.

      If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below.

      A01I3FLE02

      Note

      If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.


    NEXT

  2. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)

    Note


    • The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes.

    • Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.

    • Do not run the engine during this operation.

    • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature less than 35°C (95°F).


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

    6. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

      Tech Tips

      If no pending DTCs are displayed, perform the Confirmation Driving Pattern. After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal.


    NEXT

  3. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE)

    A01I448E10

    Note


    • In the Evaporative System Check (Manual Mode), the series of 6 Evaporative System Check steps are performed manually using the Techstream.

    • Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.

    • Do not run the engine during this operation.

    • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature less than 35°C (95°F).


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode.


    NEXT

  4. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/6)

    A01I2QBE58

    1. Check the EVAP pressure in step 1/6.

      Result

      DTC

      *1

      		 Result Suspected Trouble Area Proceed to
      - Virtually no variation in EVAP pressure Not yet determined A
      P0451 EVAP pressure fluctuates by +/-0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher Canister pressure sensor signal noise B

      (P0452 or P0453)

      *2

      • EVAP pressure is below 42.11009 kPa(abs) [315.867 mmHg(abs)], or higher than 123.76147 kPa(abs) [928.331 mmHg(abs)]

      • EVAP pressure deviates +/-10 kPa(gauge) [+/-75 mmHg(gauge)] from actual atmosphere pressure *3

      		 Canister pressure sensor or its circuit has malfunction C

      • *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

      • *2: If the canister pressure sensor circuit has an open or short, DTC P0452 or P0453 is stored 0.5 seconds after the power switch is turned on (IG).

      Tech Tips

      *3: Canister pressure sensor standard output range is 70 to 110 kPa(abs) [525 to 825 mmHg(abs)]. This varies by weather.


    B

    REPLACE CANISTER PUMP MODULE Click here

    C

    INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT) Click here

    A

  5. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/6 TO 2/6)

    A01I5NNE62

    1. Check the EVAP pressure in steps 1/6 and 2/6.

      Result
      DTC* Result Suspected Trouble Area Proceed to
      - Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure Not yet determined A
      P2402 Small difference between EVAP pressures during steps 1/6 and 2/6 Leak detection pump stuck ON B

      *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

      Tech Tips

      The first reference pressure is the value determined in step 2/6.


    B

    INSPECT NO. 1 CANISTER (CHARCOAL FILTER INSIDE CANISTER) Click here

    A

  6. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/6)

    A01I5BUE60

    Tech Tips

    Make a note of the pressures checked in inspection items (A) and (B) below.


    1. Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (A).

      *1: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts.

    2. Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (B).

      Result
      DTC*2 Result Suspected Trouble Area Proceed to
      - EVAP pressure in inspection item (B) is between -4.85 kPa(gauge) and -1.057 kPa(gauge) [-36.38 mmHg(gauge) and -7.929 mmHg(gauge)] Not yet determined A
      P043F and P2401 EVAP pressure in inspection item (B) is -1.057 kPa(gauge) [-7.929 mmHg(gauge)] or higher

      • Reference orifice high-flow

      • Leak detection pump stuck OFF

      		 B
      P043E EVAP pressure in inspection item (B) is less than -4.85 kPa(gauge) [-36.38 mmHg(gauge)] Reference orifice clogged C
      P2419 EVAP pressure in inspection item (A) is higher than -0.25 kPa(gauge) [-1.875 mmHg(gauge)]

      • Vent valve stuck closed

      • Leak detection pump performance deteriorates

      • Leak detection pump circuit malfunctioning (large resistance exists in the circuit)

      		 D

      *2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.


    B

    PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/6) Click here

    C

    REPLACE CANISTER PUMP MODULE Click here

    D

    INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Click here

    A

  7. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/6 TO 3/6)

    A01I3AZE38

    1. Check the EVAP pressure in step 3/6.

      Result
      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher within 10 seconds of proceeding from step 2/6 to step 3/6 Not yet determined A
      P2420 No variation in EVAP pressure even after proceeding from step 2/6 to step 3/6

      • Vent valve stuck open (vent)

      • Canister (charcoal filter inside canister) clogged

      • No. 1 canister (charcoal filter inside canister) clogged

      		 B

      *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.


    B

    INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Click here

    A

  8. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/6)

    A01I4EPE27

    1. Wait until the EVAP pressure change is less than 0.12 kPa(gauge) [0.9 mmHg(gauge)] for 40 seconds.

    2. Measure the EVAP pressure and record it.

      Tech Tips

      A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes.


    NEXT

  9. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 4/6)

    A01I41ME37

    1. Check the EVAP pressure in step 4/6.

      Result
      DTC*1 Result Suspected Trouble Area Proceed to
      - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher within 10 seconds of proceeding from step 3/6 to step 4/6 Not yet determined A

      P0441

      *2

      		 EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher more within 10 seconds of proceeding from step 3/6 to step 4/6

      • Purge VSV

      • Purge VSV circuit

      • Problems in EVAP hose between purge VSV and intake manifold

      • Problems in EVAP hose between canister and purge VSV

      • ECM

      		 B
      P0441 Variation in EVAP pressure is less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] for 10 seconds, after proceeding from step 3/6 to step 4/6

      • Purge VSV stuck closed

      • Purge VSV circuit

      • Canister (charcoal filter inside canister) clogged

      • No. 1 canister (charcoal filter inside canister) clogged

      • Problems in EVAP hose between purge VSV and intake manifold

      • Problems in EVAP hose between canister and purge VSV

      • ECM

      		 C

      • *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

      • *2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test result were nearly borderline values.


    B

    INSPECT EVAP HOSE (PURGE VSV - CANISTER) Click here

    C

    PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL) Click here

    A

  10. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 5/6)

    A01I5P4E01

    1. Check the EVAP pressure in step 5/6.

    2. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6).

      Result
      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure from step 3/6 lower than second reference pressure (step 5/6) Not yet determined (no leakage from EVAP system) A
      P0441 and P0455 EVAP pressure from step 3/6 higher than [second reference pressure (step 5/6) x 0.2]

      • Purge VSV stuck open

      • EVAP gross leak

      		 B
      P0456 EVAP pressure from step 3/6 higher than second reference pressure (step 5/6) EVAP small leak B

      *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.


    A

    REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Click here

    B

    PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL) Click here

  11. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/6)

    A01I46NE30

    1. Check the EVAP pressure in step 3/6.

      Result
      DTC* Result Suspected Trouble Area Proceed to
      P043F EVAP pressure less than [reference pressure] measured in step 2/6 Reference orifice high-flow A
      P2401 EVAP pressure almost same as [reference pressure] measured in step 2/6 Leak detection pump stuck off B

      *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

      Tech Tips

      The first reference pressure is the value determined in step 2/6.


    A

    REPLACE CANISTER PUMP MODULE Click here

    B

    CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE) Click here

  12. INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT)


    1. Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure Click here.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)


    1. Turn the power switch off.

    2. A01I44LE01
      Text in Illustration
      *a

      Component without harness connected

      (Canister Pump Module)

      Disconnect the canister pump module connector.

    3. Apply the auxiliary battery voltage to terminals VLVB and VGND of the canister pump module.

    4. Touch the canister pump module to confirm the vent valve operation.

      Result
      Condition Tester Result Suspected Trouble Area Proceed to
      Apply auxiliary battery voltage to terminals VLVB and VGND Operating

      • Wire harness or connector between vent valve and ECM

      • Leak detection pump performance deteriorates

      • Leak detection pump circuit malfunctioning (large resistance exists in the circuit)

      • ECM

      		 A
      Not operating Vent valve B

    B

    REPLACE CANISTER PUMP MODULE Click here

    A

  14. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)


    1. Turn the power switch off.

    2. Disconnect the ECM connector.

    3. Disconnect the canister pump module connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A25-7 (VPMP) - N34-1 (VGND) Always Below 1 Ω
      A25-7 (VPMP) or N34-1 (VGND) - Body ground Always 10 kΩ or higher
      Result
      Result Suspected Trouble Area Proceed to
      OK

      • Leak detection pump performance deteriorates

      • Leak detection pump circuit malfunctioning (large resistance exists in the circuit)

      • ECM

      		 A
      NG Wire harness or connector between ECM and canister pump module B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    A

  15. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)


    1. Disconnect the canister pump module connector.

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

      Result
      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      N34-4 (MGND) - Body ground Always Below 1 Ω

      • Canister pump module

      • Wire harness or connector between canister pump module and ECM

      • ECM

      		 A
      10 kΩ or higher Wire harness or connector between canister pump module and body ground B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    A

  16. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)


    1. Disconnect the canister pump module connector.

    2. Disconnect the ECM connector.

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

      Result
      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      A25-19 (MPMP) - N34-3 (MTRB) Always Below 1 Ω

      • Canister pump module

      • ECM

      		 A
      10 kΩ or higher Wire harness or connector between ECM and canister pump module B

    A

    REPLACE CANISTER PUMP MODULE Click here

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

  17. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL)


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

    2. A01I2A4E01
      Text in Illustration
      *1 Purge VSV
      *2 Fuel Vapor Feed Hose (to Canister)

      Disconnect the fuel vapor feed hose (connected to the canister) from the purge VSV.

    3. Put the engine in inspection mode (maintenance mode) Click here.

    4. Start the engine.

    5. Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF).

    6. Use your finger to confirm that the purge VSV has no suction.

    7. Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON).

    8. Use your finger to confirm that the purge VSV has suction.

      Result
      Test Result Suspected Trouble Area Proceed to
      No suction when purge VSV turned off, and suction applied when turned on

      Blockage in the purge line is considered (based on result of step 9):


      • Problems with EVAP hose between canister and purge VSV

      • Canister (charcoal filter inside canister) clogged

      • No. 1 canister (charcoal filter inside canister) clogged

      • ECM

      		 A

      Leakage is considered (based on result of step 10):


      • Fuel cap

      • Leakage from EVAP line, fuel tank, canister, or No. 1 canister

      		 B
      Suction applied when purge VSV turned off

      • Purge VSV stuck open

      		 C
      No suction when purge VSV turned on

      • Purge VSV stuck closed

      • Problems with EVAP hose between purge VSV and intake manifold

      		 D

    B

    CHECK FUEL CAP Click here

    C

    INSPECT PURGE VSV Click here

    D

    CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) Click here

    A

  18. INSPECT EVAP HOSE (PURGE VSV - CANISTER)


    1. Check for blockages in the EVAP purge line between the purge VSV and canister.

      OK
      No blockages in the EVAP purge line between the purge VSV and canister.

    NG

    REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) Click here

    OK

  19. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER)


    1. Check for filter blockage in the canister Click here.

      OK
      No blockages in the canister.

    NG

    REPLACE CANISTER Click here

    OK

  20. INSPECT NO. 1 CANISTER (CHARCOAL FILTER INSIDE CANISTER)


    1. Check for filter blockage in the No. 1 canister Click here.

      OK
      No blockages in the No. 1 canister.

    OK

    REPLACE ECM Click here

    NG

    REPLACE NO. 1 CANISTER Click here

  21. CHECK FUEL CAP


    1. Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications.

    2. Tighten the fuel cap firmly (only one click sound could be heard).

      Tech Tips

      If an EVAP tester is available, check the fuel cap using the tester.


      1. Remove the fuel cap and install it onto a fuel cap adapter.

      2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa(gauge) [24 to 27.75 mmHg(gauge)] using an EVAP tester pump.

      3. Seal the adapter and wait for 2 minutes.

      4. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] or higher, the fuel cap is normal.

        Result
        Test Result Suspected Trouble Area Proceed to
        Fuel cap correctly installed - A
        Fuel cap loose

        • Fuel cap improperly installed

        • Defective fuel cap

        • Fuel cap does not meet OEM specifications

        		 B
        Defective fuel cap - B
        No fuel cap - C

    A

    LOCATE EVAP LEAK PART Click here

    B

    CORRECTLY REINSTALL OR REPLACE FUEL CAP Click here

    C

    REPLACE FUEL CAP Click here

  22. INSPECT PURGE VSV


    1. Turn the power switch off.

    2. A01I5AZE01
      Text in Illustration
      *1 Fuel Vapor Feed Hose (to Canister)
      *2 Connector
      *3 Purge VSV

      Disconnect the purge VSV connector.

    3. Disconnect the fuel vapor feed hose (connected to the canister) from the purge VSV.

    4. Put the engine in inspection mode (maintenance mode) Click here.

    5. Start the engine.

    6. Use your finger to confirm that the purge VSV has no suction.

      Result
      Test Result Suspected Trouble Area Proceed to
      No suction

      • Wire harness or connector between purge VSV and ECM

      • ECM

      		 A
      Suction applied Purge VSV B

    A

    CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Click here

    B

    REPLACE PURGE VSV Click here

  23. INSPECT EVAP HOSE (PURGE VSV - CANISTER)


    1. Check for blockages in the EVAP purge line between the purge VSV and canister.

      OK
      No blockages in the EVAP purge line between the purge VSV and canister.

    NG

    REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) Click here

    OK

  24. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)


    1. A01I4UDE01
      Text in Illustration
      *1 Purge VSV
      *2 Fuel Vapor Feed Hose (to intake manifold)

      Disconnect the fuel vapor feed hose (connected to the intake manifold) from the purge VSV.

    2. Put the engine in inspection mode (maintenance mode) Click here.

    3. Start the engine.

    4. Use your finger to confirm that the fuel vapor feed hose has suction.

      Result
      Test Result Suspected Trouble Area Proceed to
      Suction applied

      EVAP hose between purge VSV and intake manifold normal


      • Purge VSV

      • Purge VSV power source

      • Wire harness or connector between purge VSV and ECM

      		 A
      No suction

      • Intake manifold port

      • EVAP hose between purge VSV and intake manifold

      		 B

    B

    INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Click here

    A

  25. INSPECT PURGE VSV


    1. Remove the purge VSV.

    2. A01I3BPE05
      Text in Illustration
      *1 Purge VSV

      Apply auxiliary battery voltage to the terminals of the purge VSV.

    3. Confirm that air flows from port E to port F.

      Result
      Test Result Condition Suspected Trouble Area Proceed to
      Air flows Auxiliary battery voltage is applied to purge VSV terminals

      Purge VSV normal


      • Purge VSV power source

      • Wire harness or connector between purge VSV and ECM

      		 A
      No air flow Auxiliary battery voltage is applied to purge VSV terminals Purge VSV B

    B

    REPLACE PURGE VSV Click here

    A

  26. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV)


    1. Disconnect the purge VSV connector.

    2. A01I58IE52
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Purge VSV)

      Turn the power switch on (IG).

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

      Result
      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      E49-1 - Body ground Power switch on (IG) 11 to 14 V

      Purge VSV power source normal


      • Wire harness or connector between purge VSV and ECM

      		 A
      Other than result above Wire harness or connectors between purge VSV and auxiliary battery B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    A

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


    1. Disconnect the ECM connector.

    2. Disconnect the purge VSV connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E49-2 - E28-68 (PRG) Always Below 1 Ω
      E49-2 or E28-68 (PRG) - Body ground Always 10 kΩ or higher

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

  28. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)


    1. Turn the power switch off.

      A01I5FUE04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Canister Pump Module)

      		 - -

    2. Disconnect the canister pump module connector.

    3. Turn the power switch on (IG).

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

      Result
      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      N34-5 (VLVB) - Body ground Power switch on (IG) 11 to 14 V

      • Wire harness or connector between vent valve and ECM

      • Vent valve

      • Canister (charcoal filter inside canister) clogged

      • No. 1 canister (charcoal filter inside canister) clogged

      • ECM

      		 A
      Below 3 V

      • Power source wire harness of vent valve

      		 B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    A

  29. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)


    1. Turn the power switch off.

    2. A01I44LE01
      Text in Illustration
      *a

      Component without harness connected

      (Canister Pump Module)

      Disconnect the canister pump module connector.

    3. Apply the auxiliary battery voltage to terminals VLVB and VGND of the canister pump module.

    4. Touch the canister pump module to confirm the vent valve operation.

      Result
      Condition Tester Result Suspected Trouble Area Proceed to
      Apply auxiliary battery voltage to terminals VLVB and VGND Operating

      • Wire harness or connector between vent valve and ECM

      • Canister (charcoal filter inside canister) clogged

      • No. 1 canister (charcoal filter inside canister) clogged

      • ECM

      		 A
      Not operating

      • Vent valve

      		 B

    B

    REPLACE CANISTER PUMP MODULE Click here

    A

  30. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)


    1. Turn the power switch off.

    2. Disconnect the ECM connector.

    3. Disconnect the canister pump module connector.

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

      Result
      Tester Connection Condition Test Result Suspected Trouble Area Proceed to
      A25-7 (VPMP) - N34-1 (VGND) Always Below 1 Ω

      • Canister (charcoal filter inside canister) clogged

      • ECM

      		 A
      10 kΩ or higher Wire harness or connector between ECM and canister pump module B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    A

  31. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER)


    1. Check for filter blockage in the canister Click here.

      OK
      No blockages in the canister.

    NG

    REPLACE CANISTER Click here

    OK

  32. INSPECT NO. 1 CANISTER (CHARCOAL FILTER INSIDE CANISTER)


    1. Check for filter blockage in the No. 1 canister Click here.

      OK
      No blockages in the No. 1 canister.

    OK

    REPLACE ECM Click here

    NG

    REPLACE NO. 1 CANISTER Click here

  33. CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE)


    1. Turn the power switch off.

    2. Disconnect the canister pump module connector.

      A01I5FUE05
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Canister Pump Module)

      		 - -

    3. Turn the power switch on (IG).

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

      Result
      Tester Connection Condition Test Result Suspected Trouble Area Proceed to
      N34-3 (MTRB) - Body ground Power switch on (IG) 9 to 14 V

      • Wire harness or connector between leak detection pump and body ground

      • Leak detection pump

      		 A
      Below 3 V

      • Wire harness or connector between leak detection pump and ECM

      • ECM

      		 B

    B

    CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Click here

    A

  34. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)


    1. Turn the power switch off.

    2. Disconnect the canister pump module connector.

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

      Result
      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      N34-4 (MGND) - Body ground Always Below 1 Ω Leak detection pump A
      10 kΩ or higher Wire harness or connector between canister pump module and body ground B

    A

    REPLACE CANISTER PUMP MODULE Click here

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

  35. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)


    1. Turn the power switch off.

    2. Disconnect the canister pump module connector.

    3. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A25-19 (MPMP) - N34-3 (MTRB) Always Below 1 Ω
      A25-19 (MPMP) or N34-3 (MTRB) - Body ground Always 10 kΩ or higher
      Result
      Result Suspected Trouble Area Proceed to
      OK ECM A
      NG Wire harness or connector between ECM and canister pump module B

    A

    REPLACE ECM Click here

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

  36. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)


    1. Stop the engine.

    2. Disconnect the EVAP hose from the intake manifold.

    3. Put the engine in inspection mode (maintenance mode) Click here.

    4. Start the engine.

    5. Use your finger to confirm that the port of the intake manifold has suction.

      Result
      Tester Connection Suspected Trouble Area Proceed to
      Suction applied EVAP hose between intake manifold and purge VSV A
      No suction Intake manifold B

    A

    REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV) Click here

    B

    INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Click here

  37. CORRECTLY REINSTALL OR REPLACE FUEL CAP

    Tech Tips


    • When reinstalling the fuel cap, tighten it firmly (only one click sound could be head).

    • When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  38. REPLACE FUEL CAP

    Tech Tips

    When installing the fuel cap, tighten it firmly (only one click sound could be head).


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  39. LOCATE EVAP LEAK PART


    1. Disconnect the vent hose.

      A01I65AE02
      Text in Illustration
      *1 Fuel Tank *2 Canister
      *3 No. 1 Canister *4 No. 2 Canister
      *5 Canister Filter *6 Fuel Tank Cap Assembly
      *7 Canister Pump Module - -
      *a Disconnect the vent hose - -

    2. Connect the EVAP pressure tester tool to the canister pump module with the adapter.

      A01I64ZE01
      Text in Illustration
      *1 Canister Pump Module *2 Adapter
      *3 EVAP Pressure Tester Tool - -

    3. Pressurize the EVAP system to 3.2 to 3.7 kPa(gauge) [24 to 27.75 mmHg(gauge)].

    4. Apply soapy water to the piping and connecting parts of the EVAP system.

    5. Look for areas where bubbles appear. This indicates the leak point.

    6. Repair or replace the leak point.

      Tech Tips

      Disconnect the hose between the canister and fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  40. REPLACE CANISTER PUMP MODULE


    1. Replace the canister pump module Click here.

      Note


      • When replacing the canister pump module, check the canister pump module interior, canister interior, No. 1 canister interior, No. 2 canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the canister pump module to No. 2 canister and the pipe from the air inlet port to the No. 2 canister; 2) the canister filter; and 3) the fuel tank vent hose. If liquids are present in the canister interior or No. 1 canister interior, replace the canister, No. 1 canister and canister pump module together. If liquids are present in the No. 2 canister interior, dry the No. 2 canister.

      • Check for filter blockage in the canister and No. 1 canister. If the charcoal filter inside the canister or No. 1 canister is clogged, replace the canister, No. 1 canister and canister pump module together.

      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.

      • Check for No. 2 canister blockage. If the No. 2 canister has blockages, replace the No. 2 canister.

      A01I65AE01
      Text in Illustration
      *1 Fuel Tank Vent Hose *2 Air Inlet Port
      *3 Vent Hose *4 Fuel Tank
      *5 Canister Pump Module *6 Canister
      *7 No. 1 Canister *8 No. 2 Canister
      *9 Canister Filter - -
      *a

      Inspection Area

      (check for disconnection and/or cracks)

      		 - -

    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  41. REPLACE PURGE VSV


    1. Replace the purge VSV Click here.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  42. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  43. REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV)


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  44. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)


    1. Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold Click here.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  45. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS


    1. Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  46. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER)


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  47. REPLACE CANISTER PUMP MODULE


    1. Replace the canister pump module Click here.

      Note


      • When replacing the canister pump module, check the canister pump module interior, canister interior, No. 1 canister interior, No. 2 canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the canister pump module to No. 2 canister and the pipe from the air inlet port to the No. 2 canister; 2) the canister filter; and 3) the fuel tank vent hose. If liquids are present in the canister interior or No. 1 canister interior, replace the canister, No. 1 canister and canister pump module together. If the liquids are present in the No. 2 canister, dry the No. 2 canister.

      • Check for filter blockage in the canister and No. 1 canister. If the charcoal filter inside the canister or No. 1 canister is clogged, replace the canister, No. 1 canister and canister pump module together.

      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.

      • Check for No. 2 canister blockage. If the No. 2 canister has blockages, replace the No. 2 canister.

      A01I65AE01
      Text in Illustration
      *1 Fuel Tank Vent Hose *2 Air Inlet Port
      *3 Vent Hose *4 Fuel Tank
      *5 Canister Pump Module *6 Canister
      *7 No. 1 Canister *8 No. 2 Canister
      *9 Canister Filter - -
      *a

      Inspection Area

      (check for disconnection and/or cracks)

      		 - -

    NEXT

  48. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)

    Note


    • The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes.

    • Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.

    • Do not run the engine in this step.

    • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature less than 35°C (95°F).


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

    6. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

      Result Proceed to
      EVAP system DTCs are output A

      No DTCs output

      (No pending DTCs output)

      		 B

    B

    END

    A

  49. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  50. REPLACE CANISTER


    1. Replace the canister Click here.

      Note


      • When replacing the canister, check the canister pump module interior, No. 1 canister interior, No. 2 canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the canister pump module to No. 2 canister and the pipe from the air inlet port to the No. 2 canister; 2) the canister filter; and 3) the fuel tank vent hose.

      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.

      • Check for No. 2 canister blockage. If the No. 2 canister has blockages, replace the No. 2 canister.

      A01I65AE01
      Text in Illustration
      *1 Fuel Tank Vent Hose *2 Air Inlet Port
      *3 Vent Hose *4 Fuel Tank
      *5 Canister Pump Module *6 Canister
      *7 No. 1 Canister *8 No. 2 Canister
      *9 Canister Filter - -
      *a

      Inspection Area

      (check for disconnection and/or cracks)

      		 - -

    NEXT

    PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) Click here

  51. REPLACE NO. 1 CANISTER


    1. Replace the No. 1 canister Click here.

      Note


      • When replacing the No. 1 canister, check the canister pump module interior, canister interior, No. 2 canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the canister pump module to No. 2 canister and the pipe from the air inlet port to the No. 2 canister; 2) the canister filter; and 3) the fuel tank vent hose.

      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.

      • Check for No. 2 canister blockage. If the No. 2 canister has blockages, replace the No. 2 canister.

      A01I65AE01
      Text in Illustration
      *1 Fuel Tank Vent Hose *2 Air Inlet Port
      *3 Vent Hose *4 Fuel Tank
      *5 Canister Pump Module *6 Canister
      *7 No. 1 Canister *8 No. 2 Canister
      *9 Canister Filter - -
      *a

      Inspection Area

      (check for disconnection and/or cracks)

      		 - -

    NEXT

  52. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)

    Note


    • The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes.

    • Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.

    • Do not run the engine in this step.

    • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

    6. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

      Tech Tips

      If no pending DTCs are found, the repair has been successfully completed.


    NEXT

    END

CONFIRMATION DRIVING PATTERN

Tech Tips

After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation and Purge Flow Monitor Confirmation described below.


  1. KEY-OFF MONITOR CONFIRMATION


    1. Preconditions

      The monitor will not run unless:


      • The vehicle has been driven for 10 minutes or more (in a city area or on a freeway).

      • The fuel tank is less than 90% full.

      • The altitude is less than 2400 m (7875 ft).

      • The engine coolant temperature is between 4.4 and 35°C (40 and 95°F).

      • The intake air temperature is between 4.4 and 35°C (40 and 95°F).

      • The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph]).

    2. Monitor Conditions


      1. Allow the engine to idle for at least 5 minutes.

      2. Turn the power switch off and wait for 6 hours (8 or 10.5 hours).

        Tech Tips

        Do not start the engine until checking Monitor Status. If the engine is started, the steps described above must be repeated.

    3. Monitor Status


      1. Connect the Techstream to the DLC3.

      2. Turn the power switch on (IG).

      3. Turn the Techstream on.

      4. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor.

      5. Check the Monitor Status displayed on the Techstream.

        Tech Tips

        If Incomplete is displayed, the monitor did not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.

  2. PURGE FLOW MONITOR CONFIRMATION (P0441)

    Tech Tips

    Perform this monitor confirmation after the Key-Off Monitor Confirmation shows Complete.


    1. Preconditions

      The monitor will not run unless:


      • The vehicle has been driven for 10 minutes or more (in a city area or on a freeway).

      • The engine coolant temperature is 4.4°C (40°F) or higher.

      • The intake air temperature is 4.4°C (40°F) or higher.

    2. Monitor Conditions


      1. Release the pressure from the fuel tank by removing and reinstalling the fuel tank cap assembly.

      2. Warm the engine up until the engine coolant temperature reaches higher than 75°C (167°F).

      3. Increase the engine speed to 2500 rpm once.

      4. Allow the engine to idle and turn the A/C switch on for 1 minute.

    3. Monitor Status


      1. Turn the power switch off (if on (IG) or if the engine is running).

      2. Connect the Techstream to the DLC3.

      3. Turn the power switch on (IG).

      4. Turn the Techstream on.

      5. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor.

      6. Check the Monitor Status displayed on the Techstream.

        Tech Tips

        If Incomplete is displayed, the monitor did not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.

MONITOR RESULT

Refer to detailed information in Checking Monitor Status Click here.

P0456: Evaporative System / SMALL LEAK
Monitor ID Test ID Scaling Unit Description
$3D $C9 Multiply by 0.001 kPa Test value for small leak
P0455: Evaporative System / GROSS LEAK
Monitor ID Test ID Scaling Unit Description
$3D $CA Multiply by 0.001 kPa Test value for gross leak
P2401: Evaporative System / VACUUM PMP OFF
Monitor ID Test ID Scaling Unit Description
$3D $CB Multiply by 0.001 kPa Test value for leak detection pump stuck OFF
P2402: Evaporative System / VACUUM PMP ON
Monitor ID Test ID Scaling Unit Description
$3D $CD Multiply by 0.001 kPa Test value for leak detection pump stuck ON
P2420: Evaporative System / VENT VALVE OFF
Monitor ID Test ID Scaling Unit Description
$3D $CE Multiply by 0.001 kPa Test value for vent valve stuck OFF
P2419: Evaporative System / VENT VALVE ON
Monitor ID Test ID Scaling Unit Description
$3D $CF Multiply by 0.001 kPa Test value for vent valve stuck ON
P043E: Evaporative System / ORIFICE CLOGGED
Monitor ID Test ID Scaling Unit Description
$3D $D0 Multiply by 0.001 kPa Test value for reference orifice low flow
P043F: Evaporative System / ORIFICE HI-FLW
Monitor ID Test ID Scaling Unit Description
$3D $D1 Multiply by 0.001 kPa Test value for reference orifice high flow
P0441: Evaporative System / PURGE VSV CLOSED
Monitor ID Test ID Scaling Unit Description
$3D $D4 Multiply by 0.001 kPa Test value for purge VSV stuck closed
P0441: Evaporative System / PURGE VSV OPENED
Monitor ID Test ID Scaling Unit Description
$3D $D5 Multiply by 0.001 kPa Test value for purge VSV stuck open
P0441: Evaporative System / PURGE FLOW
Monitor ID Test ID Scaling Unit Description
$3D $D7 Multiply by 0.001 kPa Test value for purge flow insufficient