Part 2
1UR-FE ENGINE CONTROL: SFI SYSTEM: EVAP System
- EVAP System - Continued
Result
A -- LOCATE EVAP LEAK PART
B -- CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP
C -- REPLACE FUEL TANK CAP
21. INSPECT PURGE VSV
(a) Turn the engine switch off.
(b) Disconnect the purge VSV connector.
(c) Disconnect the hose (connected to the canister) from the purge VSV.
(d) Start the engine.
(e) Use your finger to confirm that the purge VSV has no suction.
Text in Illustration
Result
A -- CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
B -- REPLACE PURGE VSV
22. INSPECT EVAP HOSE (PURGE VSV - CANISTER)
(a) 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)
OK -- Continue to next step.
23. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
(a) Disconnect the hose (connected to the intake manifold) from the purge VSV.
(b) Start the engine.
(c) Use your finger to confirm that the hose has suction.
Text in Illustration
Result
B -- INSPECT INTAKE MANIFOLD SUB-ASSEMBLY (EVAP PURGE PORT)
A -- Continue to next step.
24. INSPECT PURGE VSV
(a) Remove the purge VSV Removal.
(b) Apply the battery voltage to the terminals of the purge VSV.
(c) Using an air gun, confirm that air flows from port A to port B.
Result
B -- REPLACE PURGE VSV
A -- Continue to next step.
25. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV)
(a) Disconnect the purge VSV connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Text in Illustration
Result
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
26. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the purge VSV connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
OK -- REPLACE ECM
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
27. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)
(a) Turn the engine switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the engine switch on (IG).
(d) Measure the voltage according to the value(s) in the table below.
Text in Illustration
Result
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
28. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)
(a) Turn the engine switch off.
(b) Disconnect the canister pump module connector.
(c) Apply the battery voltage to terminals 9 (VLVB) and 8 (VGND) of the canister pump module.
(d) Touch the canister pump module to confirm the vent valve operation.
Text in Illustration
Result
B -- REPLACE CANISTER
A -- Continue to next step.
29. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the canister pump module connector.
(c) Measure the resistance according to the value(s) in the table below.
Result
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
30. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER)
(a) Check for filter blockage in the canister (See page).
OK:
No blockages in the canister.
OK -- REPLACE ECM
NG -- REPLACE CANISTER
31. PERFORM ACTIVE TEST USING TECHSTREAM (VACUUM PUMP (ACTIVATE THE VACUUM PUMP))
(a) Turn the engine switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the engine switch on (IG).
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
(e) Measure the voltage according to the value(s) in the table below.
Text in Illustration
Result
B -- CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)
C -- REPLACE ECM
A -- Continue to next step.
32. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)
(a) Turn the engine switch off.
(b) Disconnect the canister pump module connector.
(c) Measure the resistance according to the value(s) in the table below.
Result
A -- REPLACE CANISTER
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
33. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)
(a) Turn the engine switch off.
(b) Disconnect the canister pump module connector.
(c) Disconnect the ECM connector.
(d) Measure the resistance according to the value(s) in the table below.
Result
A -- REPLACE ECM
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
34. INSPECT INTAKE MANIFOLD SUB-ASSEMBLY (EVAP PURGE PORT)
(a) Stop the engine.
(b) Disconnect the purge line from the intake manifold.
(c) Start the engine.
(d) Use your finger to confirm that the port of the intake manifold has suction.
Result
(e) Reconnect the purge line.
A -- REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV)
B -- INSPECT INTAKE MANIFOLD SUB-ASSEMBLY (EVAP PURGE PORT)
35. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP
HINT
* When reinstalling the fuel tank cap, tighten it until a few click sounds are heard.
* When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications, and tighten it until a few click sounds are heard.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
36. REPLACE FUEL TANK CAP
HINT
When replacing the fuel cap, use a fuel cap that meets OEM specifications, and tighten it until a few click sounds are heard.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
37. LOCATE EVAP LEAK PART
Text in Illustration
(a) Disconnect the vent hose.
(b) Connect an EVAP tester to the canister pump module with an adapter.
(c) Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
(d) Apply soapy water to the piping and connecting parts of the EVAP system.
(e) Look for areas where bubbles appear. This indicates the leak point.
(f) 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.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
38. REPLACE CANISTER
(a) Replace the canister Removal.
NOTICE:
* 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 fuel tank vent hose.
* Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.
Text in Illustration
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
39. REPLACE PURGE VSV
(a) Replace the purge VSV Removal.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
40. REPAIR OR REPLACE HARNESS OR CONNECTOR
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
41. REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV)
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
42. INSPECT INTAKE MANIFOLD SUB-ASSEMBLY (EVAP PURGE PORT)
(a) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the upper intake manifold sub-assembly (See page ).
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
43. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS
(a) Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
44. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER)
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
45. REPLACE CANISTER
(a) Replace the canister Removal.
NOTICE:
* 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 fuel tank vent hose.
* Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.
Text in Illustration
NEXT -- Continue to next step.
46. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
NOTICE:
* 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 more than 90% full because the cut-off valve may be closed. If the cut-off valve is closed, the fuel tank leak check is not possible.
* Do not run the engine in this step.
* 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 Evaporative System Check, keep the temperature below 35°C (95°F).
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear DTCs (See page ).
(e) Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
(f) After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
B -- END
A -- Continue to next step.
47. REPLACE ECM
(a) Replace the ECM Removal.
NEXT -- Continue to next step.
48. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
NOTICE:
* 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 more than 90% full because the cut-off valve may be closed. If the cut-off valve is closed, the fuel tank leak check is not possible.
* Do not run the engine in this step.
* 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 Evaporative System Check, keep the temperature below 35°C (95°F).
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
(f) After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
HINT
If no pending DTCs are found, the repair has been successfully completed.
NEXT -- END
CONFIRMATION DRIVING PATTERN
HINT
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
(a) 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 2438 m (8000 ft.)
* The Engine Coolant Temperature (ECT) is between 4.4°C and 35°C (40°F and 95°F)
* The Intake Air Temperature (IAT) is between 4.4°C and 35°C (40°F and 95°F)
* The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph])
(b) Monitor Conditions
(1) Allow the engine to idle for at least 5 minutes.
(2) Turn the engine switch off and wait for 6 hours (8 or 10.5 hours).
HINT
Do not start the engine until checking Monitor Status. If the engine is started, the steps described above must be repeated.
(c) Monitor Status
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG) and turn the Techstream on.
(3) Enter the following menus: Powertrain / Engine and ECT / Monitor / Evaporative System.
(4) Check the Monitor Status displayed on the Techstream.
HINT
If Incomplete is displayed, the monitor is not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.
2. PURGE FLOW MONITOR CONFIRMATION (P0441)
HINT
Perform this monitor confirmation after the Key-Off Monitor Confirmation shows Complete.
(a) 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 ECT is between 4.4 and 35°C (40 and 95°F)
* The IAT is between 4.4 and 35°C (40 and 95°F)
(b) Monitor Conditions
(1) Release the pressure from the fuel tank by removing and reinstalling the fuel cap.
(2) Warm the engine up until the ECT reaches more than 75°C (167°F).
(3) Increase the engine speed to 3000 rpm once.
(4) Allow the engine to idle and turn the A/C ON for 1 minute.
(c) Monitor Status
(1) Turn the engine switch off (if ON or if the engine is running).
(2) Connect the Techstream to the DLC3.
(3) Turn the engine switch on (IG) and turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine and ECT / Monitor.
(5) Check the Monitor Status displayed on the Techstream.
HINT
If Incomplete is displayed, the monitor is not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.
MONITOR RESULT
Refer to Checking Monitor Status Mode 6 Data.