Inspection Procedure

CONFIRM DTC

Turn the power switch OFF and wait 10 seconds
Turn the power switch ON (IG)
Turn the power switch OFF and wait 10 seconds
Connect the intelligent tester to the DLC3
Turn the power switch ON (IG) and turn the tester ON.
Enter the following menus.
1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
2. Techstream - Select Powertrain / Engine and ECT / Trouble Codes

Confirm the DTCs

DTC and Malfunction Cross-Reference

DTC REFERENCE CHART

DTC No.	Suspected Malfunction
P043E, P043F, P2401, P2402 and P2419	Reference orifice low flow Reference orifice high flow Leak detection pump OFF stuck Leak detection pump ON stuck Vent valve ON (close) stuck
P2420	Vent valve OFF (vent) stuck
P0441	Purge VSV close stuck
P0441 and P1421	Gross leak from canister Purge VSV open stuck
P1420	Small leak from canister
P1422	Small leak from fuel tank
P1423	Gross leak from fuel tank
P1423 and P2450	FVCV open stuck
P2451	FVCV close stuck

PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

NOTE:

In the EVAP SYSTEM CHECK (AUTO OPERATION) Evaporative System Check (Automatic Mode), a series of 9 Evaporative System Check steps are performed automatically. A maximum of 15 minutes is required.
Do not perform the EVAP SYS CHECK (Evaporative System Check) when the fuel tank is more than 90% full because the cut-off valve may be closed and the leak check of the fuel tank is unavailable.
Do not run the engine.
When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an EVAP SYS CHECK (Evaporative System Check), keep the temperature below 35°C (95°F).

Clear the DTC with the intelligent tester or Techstream.
Remove the fuel tank cap and reinstall the fuel cap.
Enter the following menus:
1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
2. Techstream - Select: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

After the EVAP System Check is completed, check the DTC.

Result

RESULT REFERENCE

DTC No.	Conclusion	Proceed to
Set	A malfunction occurs and troubleshooting can be performed	A
Not set	No malfunctions occur and it is difficult to perform troubleshooting	B
DTC is not set and any of the current DTCs (P1422, P1423, or P2450) is set	DTCs have set because of the fuel cap loosening	C

B: Go to step 34

C: END

A: Go to next step

IDENTIFICATION OF TROUBLE AREAS USING DTC

Refer to the table below to determine the next procedure according to the output DTCs.

Result

RESULT REFERENCE

DTC No.	Suspected Malfunction	Proceed to
P0441, P1420, P1421, P1422, P1423, P2450 and/or P2451	Purge VSV open stuck Purge VSV close stuck Gross leak from canister Small leak from canister Gross leak from fuel tank Small leak from fuel tank FVCV open stuck FVCV close stuck	A
P043E, P043F, P2401, P2402, P2419 and/or P2420	Reference orifice low flow Reference orifice high flow Leak detection pump OFF stuck Leak detection pump ON stuck Vent valve ON (close) stuck Vent valve OFF (vent) stuck	B

B: Go to step 11

A: Go to next step

IDENTIFICATION OF TROUBLE AREAS USING DTC

Refer to the table below to determine the next procedure according to the output DTCs.

Result

RESULT REFERENCE

DTC No.	Suspected Malfunction	Proceed to
P0441	Purge VSV close stuck	A
P0441 and P1421	Gross leak from canister Purge VSV open stuck	B
P1420	Small leak from canister	B
P1422	Small leak from fuel tank	C
P1423	Gross leak from fuel tank	C
P1423 and P2450	FVCV open stuck	D
P2451	FVCV close stuck	D

B: Go to step 18

C: Go to step 21

D: Go to step 23

A: Go to next step

CHECK VACUUM HOSE (PURGE VSV - INTAKE MANIFOLD)

Disconnect the hose (to intake manifold) from the Purge VSV.
Put the engine in inspection mode (see INSPECTION MODE PROCEDURE ).

Use your finger to confirm that the Purge VSV has suction.

Fig 1: Identifying Purge VSV And Hose (To Intake Manifold)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Result

RESULT REFERENCE

Result	Proceed to
There is suction Conclusion EVAP hose between Purge VSV and intake manifold is normal	OK
There is no suction Conclusion Problem in intake manifold or hose between Purge VSV and intake manifold	NG

NG: Go to step 33

OK: Go to next step

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (PURGE VSV)
1. Disconnect the hose (to canister) from the Purge VSV
2. Put the engine in inspection mode (see INSPECTION MODE PROCEDURE ).
3. Enter the following menus:
  1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / EVAP VSV (ALONE)
  2. Techstream - Select. Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.
4. Turn the Purge VSV OFF (Purge VSV. OFF).
5. Use your finger to confirm that the Purge VSV has no suction
6. Turn the Purge VSV ON (Purge VSV: ON)
7. Use your finger to confirm that the purge VSV has suction
  OK: Purge VSV functions normally
OK: Go to step 33

NG: Go to step 7

CHECK PURGE VSV

Remove the purge VSV (see REMOVAL ).

Fig 3: Checking Purge VSV

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Apply compressed air to the purge VSV, confirm that no airflows from A to B as shown in the illustration.
Apply battery voltage to the purge VSV.

While applying compressed air, confirm that air flows from A to B as shown in the illustration

Result

RESULT REFERENCE

Result	Proceed to
Air flows from A to B Conclusion purge VSV is normal	OK
No air flows from A to B Conclusion purge VSV is malfunctioning	NG

NG: Go to step 27

OK: Go to next step

CHECK HARNESS AND CONNECTOR (PURGE VSV - EFI FUSE)

Disconnect the E44 purge VSV connector.

Fig 4: Identifying Purge VSV Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Turn the power switch ON (IG)

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

Result

RESULT REFERENCE

Tester Connection	Result	Suspected Trouble Area	Proceed to
E44-2 - Body ground	11 to 14 V	Conclusion No problem exists on power source's wires	OK
E44-2 - Body ground	Except above	Conclusion Problem in wire or connector between purge VSV and battery	NG

NG: Go to step 32

OK: Go to next step

CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

Disconnect the E1 ECM connector and the E44 purge VSV connector

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

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
E1-17 (PRG) - E44-1	Always	10 Ω or less
E1-17 (PRG) - Body ground	Always	10 kΩ or more
E44-1 - Body ground	Always	10 kΩ or more

Fig 5: Identifying Purge VSV And ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 32

OK: Go to next step

REPLACE ECM
1. Replace the ECM (see REMOVAL )
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (VACUUM PUMP)
1. Connect the intelligent tester or Techstream to DLC3.
2. Turn the power switch ON (IG).
3. Enter the following menus:
  1. Intelligent tester - Select DIAGNOSIS/ ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP
  2. Techstream - Select. Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
4. Turn the leak detection pump ON with the tester.
5. Touch the canister pump module and check if the pump is moving.
  OK: Pump operates
NG: Go to step 13

OK: Go to next step
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (VENT VALVE)
1. Remove the canister lower cover (see REMOVAL ).
2. Connect the intelligent tester or Techstream to DLC3.
3. Turn the power switch ON (IG).
4. Enter the following menus:
  1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE
  2. Techstream - Select. Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve.
5. Touch the canister pump module, use the tester to turn the vent valve ON and OFF, and check if the vent valve is moving.
  OK: Vent valve vibration can be felt.
OK: Go to step 28

NG: Go to step 16
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (VACUUM PUMP)
1. Turn the power switch OFF.
2. Remove the canister lower cover (see REMOVAL ).
3. Disconnect the canister pump module connector.
4. Connect the intelligent tester or Techstream to DLC3.
5. Turn the power switch ON (IG).
6. Enter the following menus:
  1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP.
  2. Techstream - Select. Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
7. Turn the leak detection pump ON with the tester.
8. Measure the voltage between MTRB terminal 1 of the canister pump module connector and body ground when the leak detection pump is turned ON and OFF using the tester.
  Standard voltage: 10 to 14 V
NG: Go to step 15

OK: Go to next step
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)
1. Remove the canister lower cover (see REMOVAL ).
2. Disconnect the canister pump module connector.
3. Measure the resistance between MGND terminal of the canister pump module and the body ground.
  Standard resistance: Below 1 Ω
OK: Go to step 28

NG: Go to step 32

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

Disconnect the E1 ECM connector.
Disconnect the canister pump module connector.

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

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
E1-15 (MPMP) - V1-1 (MTRB)	Always	10 Ω or less
E1-15 (MPMP) or V1-1 (MTRB) - Body ground	Always	10 kΩ or higher

Fig 8: Identifying Canister Pump Module And ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to step 26

NG: Go to step 32

INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

Turn the power switch OFF.
Remove the canister lower cover (see REMOVAL ).
Disconnect the canister pump module connector

Fig 9: Identifying Canister Pump Module Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Touch the canister pump module to confirm the vent valve operation

Result

RESULT REFERENCE

Test Result	Suspected Trouble Areas	Proceed to
Operating	Wire harness between vent valve and ECM ECM	A
Not operating	Vent valve	B

B: Go to step 28

A: Go to next step

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)

Disconnect the E1 ECM connector.
Disconnect the canister pump module connector.

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

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
E1-16 (VPMP) - V1-8 (VGND)	Always	10 Ω or less
E1-16 (VPMP) or V1-8 (VGND) - Body ground	Always	10 kΩ or higher

Fig 10: Identifying Canister Pump Module And ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to step 26

NG: Go to step 32

LOCATE EVAP LEAK PART (PURGE VSV - CANISTER)

Fig 11: Identifying EVAP Tester, Canister And Vent Hose
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the vent hose
2. Connect the EVAP tester to the vent hose with the adapter
3. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
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
  HINT:
  
  Disconnect the hose between the canister and the 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.
REPLACE MALFUNCTIONING PART
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
CHECK FUEL TANK CAP ASSEMBLY
1. Check if the fuel cap is tightened until a few "click" sounds are heard.
2. If you have the EVAP tester, check the fuel cap using the fuel cap adaptor
  1. Install the fuel cap to the fuel cap adaptor, and connect the hose from the EVAP tester's pump.
  2. Pressurize the fuel cap adaptor to between 24 and 28 mmHg or for 45 seconds.
  3. Stop the pump and seal the fuel cap adaptor.
  4. Wait 2 minutes.
  5. Confirm that the pressure is higher than 15 mmHg
    OK: Higher than 15 mmHg
NG: Go to step 31

OK: Go to next step
LOCATE EVAP LEAK PART (FUEL VAPOR-CONTAINMENT VALVE - FUEL TANK)

Fig 12: Identifying EVAP Tester, Canister And Vent Hose
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the vent hose.
2. Connect the EVAP tester to the vent hose with the adapter.
3. Connect the intelligent tester or Techstream to DLC3.
4. Turn the power switch ON (IG).
5. Enter the following menus:
  1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FVCV.
  2. Techstream - Select: Powertrain / Engine and ECT / Active Test /Activate the Fuel Vapor-Containment Valve.
6. Turn the Fuel vapor-containment valve ON with the tester.
7. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
8. Apply soapy water to the piping and connecting parts of the EVAP system.
9. Look for areas where bubbles appear. This indicates the leak point.
10. Repair or replace the leak point.
  HINT:
  
  Disconnect the hose between the canister and the 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.
REPLACE MALFUNCTIONING PART
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
CHECK FUEL VAPOR-CONTAINMENT VALVE ASSEMBLY (POWER SOURCE CIRCUIT)
1. Disconnect the mS1 wire harness to wire harness connector.
2. Connect the intelligent tester to the DLC3.
3. Turn the power switch ON (IG).
4. Enter the following menus:
  1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FVCV.
  2. Techstream - Select: Powertrain / Engine and ECT / Active Test /Activate the Fuel Vapor-Containment Valve.
5. Turn the fuel vapor-containment valve ON with the tester.
6. Measure the voltage between terminals 5 and 6 of the mS1 connector
  Standard voltage: 10 to 14 V
  
  Fig 13: Identifying Floor Wire Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to step 29

NG: Go to step 24
CHECK HARNESS AND CONNECTOR (FUEL VAPOR-CONTAINMENT VALVE - EFI NO. 2 FUSE)
1. Disconnect the mS1 wire harness to wire harness connector
2. Measure the voltage between terminal mS1-6 and the body ground.
  Standard voltage: 10 to 14 V
NG: Go to step 32

Fig 14: Identifying Floor Wire Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK HARNESS AND CONNECTOR (FUEL VAPOR-CONTAINMENT VALVE ASSEMBLY - ECM)

Disconnect the E1 ECM connector.
Disconnect the mS1 wire harness to wire harness connector.

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

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
E1-8 (CCV2) - mS1-5	Always	10 Ω or less
E1-8 (CCV2) or mS1-5 - Body ground	Always	10 kΩ or more

Fig 15: Identifying Floor Wire And ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 32

OK: Go to next step

REPLACE ECM
1. Replace the ECM (see REMOVAL ).
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
REPLACE PURGE VSV
1. Replace the purge VSV (see REMOVAL ).
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
REPLACE CANISTER ASSEMBLY
1. Replace the canister assembly (see REMOVAL ).
  NOTE: When replacing the canister, check the canister pump module 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 air inlet port to the canister pump module; 2) the canister filter; and 3) the hose from the canister to the fuel tank.
  
  Fig 16: Identifying Vent Hose, Air Inlet Port, Canister Filter And Fuel Tank
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)

CHECK HARNESS AND CONNECTOR (TANK WIRE HARNESS)

Remove the fuel tank assembly (see REMOVAL ).
Disconnect the fuel vapor-containment valve connector.

Fig 17: Identifying Fuel Vapor-Containment Valve And Floor Wire Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
mS1-5 - m2-1 (CCV)	Always	Below 1 Ω
mS1-6 - m2-2 (+B)	Always	Below 1 Ω

Reinstall fuel tank assembly (See INSTALLATION )

NG: Go to step 32

OK: Go to next step

REPLACE FUEL VAPOR-CONTAINMENT VALVE
1. Replace the fuel vapor-containment valve (see REMOVAL )
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
REPLACE FUEL TANK CAP
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
REPAIR OR REPLACE HARNESS AND CONNECTOR
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
REPAIR OR REPLACE VACUUM HOSE
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION)

HINT:

In the manual operation check, the EVAP system can be checked in signal steps Valve operation and pressure in each step can also be checked.

Clear DTCs (see DTC CHECK/CLEAR )
Remove the fuel tank cap and reinstall the fuel cap

Enter the following menus.

Intelligent tester - Select DIAGNOSIS/ ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK/MANUAL

Techstream - Select. Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode.

NOTE:

In the EVAP SYS CHECK (AUTO OPERATION) or Evaporative System Check (Manual Mode), the series of 9 Evaporative System Check steps is performed automatically. It takes a maximum of approximately 18 minutes.
Do not perform the EVAP SYS CHECK (Evaporative System Check) when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable.
Do not run the engine in this step.
When the temperature of the fuel is 35C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the EVAP SYS CHECK (Evaporative System Check), keep the temperature below 35°C (95°F).

Tester Display

TESTER DISPLAY REFERENCE

Display	Detail
Atm Press Check	The number of steps and step names are displayed
PURGE VSV	Purge VSV condition is displayed ON (Open) / OFF (Closed)
VENT VALVE	Vent valve condition is displayed ON (Closed) / OFF (Vent)
LEAK DETECTION PUMP	Leak detection pump condition is displayed ON / OFF
FVCV	Fuel vapor-containment valve condition is displayed ON (Open) / OFF (Closed)
TANK PRESS	Fuel tank pressure (Gauge pressure)
VAPOR PRESS	EVAP pressure (Gauge pressure)
VAPOR PRESS	EVAP pressure (Absolute pressure)
Time (Step)	Elapsed time for each step
Time (VSV)	Accumulated purge VSV open time
Time (PUMP)	Accumulated leak detection pump operating time

Manual Operation Step

OPERATION STEP REFERENCE

Step	Operation
1 Atm Press Check 1	Atmospheric pressure measurement
2 Ref Press Check 1	First reference pressure measurement
3 Leak Check	EVAP system pressure measurement
4 Purge VSV Check	Purge VSV monitor
5 Ref Press Check 2	Second Reference pressure measurement
6 Resetting	Resetting
7 Tank Leak Check	Fuel tank pressure measurement
8 Ref Press Check 3	Third Reference pressure measurement

Fig 18: EVAP Pressure Graph (Manual Operation)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 1)
1. Select the step 1 and wait 10 seconds.

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 2)

Perform step 2.
Check the EVAP pressure 2 seconds after the leak detection pump is activated*.
*. The leak detection pump begins to operate at the start of step 2

Fig 19: EVAP Pressure Graph (Step 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the EVAP pressure again when it has stabilized. This pressure is the first reference pressure standard.

Fig 20: EVAP Pressure Graph (Step 2)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
EVAP pressure in step (b) is between 723 6 mmHg-a and 752 mmHg-a	Not yet determined	A
EVAP pressure in step (b) is 752 mmHg-a or more	Reference orifice high-flow Leak detection pump stuck OFF	B
EVAP pressure in step (b) is below 723 6 mmHg-a	Reference orifice clogged	C

B: Go to step 11

C: Go to step 28

A: Go to next step

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 3)

Perform step 3.

Check the EVAP pressure change in step 3.

Fig 21: EVAP Pressure Graph (Step 3)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
EVAP pressure change in step (b) is 762 mmHg-a or more	Not yet determined	A
EVAP pressure in step (b) is below 762 mmHg-a	Vent valve stuck OFF	B

Check the fuel tank pressure change in step 3

Fig 22: EVAP Pressure Graph (Step 3)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
Fuel tank pressure in step (c) is below 763 7 mmHg-a	Not yet determined	A
Fuel tank pressure change in step (c) is 763 7 mmHg-a or more	Fuel vapor-containment valve (FVCV) ON (open) stuck	C

Check the EVAP pressure again when it has stabilized. This pressure is the canister leak pressure standard.

Compare the first reference pressure with the canister leak pressure.

Fig 23: EVAP Pressure Graph (Step 3)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
Lower than first reference pressure	Not yet determined	A
First reference pressure or higher	Purge VSV open stuck Leakage from line between Purge VSV and canister	D

B: Go to step 16

C: Go to step 23

D: Go to step 18

A: Go to next step

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 4)

Perform step 4

Check the EVAP pressure change in step 4.

Fig 24: EVAP Pressure Graph (Step 4)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
EVAP pressure change in step (b) is 762 mmHg-a or more	Not yet determined	A
EVAP pressure in step (b) is below 762 mmHg-a	Purge VSV close stuck	B

B: Go to step 5

A: Go to next step

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 5)
1. Perform step 5 and wait 60 seconds.
2. Check the EVAP pressure. This pressure is the second reference pressure standard.
PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 6)
1. Perform step 6 and wait 5 seconds.

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 7)

Perform step 7.
Check that the tank pressure and EVAP pressure change

Check the tank pressure again when it has stabilized. This pressure is the fuel tank leak pressure standard.

Fig 25: EVAP Pressure Graph (Step 7)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
Tank pressure change is more than 766 7 mmHg-a and EVAP pressure is more than 752 5 mmHg-a	Not yet determined	A
Tank pressure change is less than 766 7 mmHg-a and EVAP pressure is less than 752 5 mmHg-a	Fuel vapor-containment valve (FVCV) OFF (close) stuck	B

B: Go to step 23

A: Go to next step

PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 8)

Perform step 8 and wait 60 seconds
Check the EVAP pressure This pressure is the third reference pressure standard

Compare the tank pressure checked in step 8 with the third reference pressure.

Fig 26: EVAP Pressure Graph (Step 8)

Result

RESULT REFERENCE

Test Result	Suspected Trouble Area	Proceed to
Lower than third reference pressure	Not yet determined	A
Third reference pressure or higher	Leakage from line between fuel vapor-containment valve and fuel tank	B

B: Go to step 20

A: Go to next step

PERFORM CONFIRMATION DRIVING PATTERN
1. KEY-OFF MONITOR DRIVE PATTERN
  1. Connect the intelligent tester or Techstream to the DLC3
  2. Confirm the following conditions are satisfied:
    - The fuel level is less than 90%.
    - The altitude is less than 2400 m (8000 ft.).
    - The vehicle is stopped (the vehicle speed is less than 2 mph).
    - The ECT is 4.4 to 35°C (40 to 95°F).
    - The IAT is 4.4 to 35°C (40 to 95°F).
    - Driven vehicle in the city area or on a freeway for 10 minutes or more.
  3. Perform the drive pattern.
    1. Allow the engine to idle for 5 minutes or more.
    2. Turn the power switch OFF and wait 6 hours.
  4. Check the monitor status with the intelligent tester.
2. PURGE FLOW MONITOR DRIVE PATTERN (P0441)
  1. Connect the intelligent tester or Techstream to the DLC3
  2. Confirm that the following conditions are satisfied:
    - The Engine Coolant Temperature (ECT) is more than 4.4°C (40°F).
    - The Intake Air Temperature (IAT) is more than 4.4°C (40°F).
  3. Perform the drive pattern.
    1. Remove and reinstall the fuel cap to release the fuel tank pressure
    2. Turn the power switch ON (READY).
    3. Warm up the engine until the ECT reaches 75°C (167°F) or more.
    4. Driven vehicle in the city area or on a freeway for 10 minutes or more.
  4. Check the monitor status with the tester.
NEXT: PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)