Part 2
1GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System
- EVAP System (Continued..)
11. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5)
(a) Check the EVAP pressure in step 3/5.
Result
*: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the Confirm DTC procedures above.
HINT
The first reference pressure is the value determined in step 2/5.
B -- PERFORM ACTIVE TEST USING TECHSTREAM (FOR LEAK DETECTION PUMP)
A -- REPLACE CANISTER ASSEMBLY
12. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV)
(a) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.
(b) Disconnect the hose (connected to the canister) from the purge VSV.
Text in Illustration
(c) Start the engine.
(d) Using the Techstream, turn off the purge VSV (Activate the VSV for EVAP Control: OFF).
(e) Use your finger to confirm that the purge VSV has no suction.
(f) Using the Techstream, turn on the purge VSV (Activate the VSV for EVAP Control: ON).
(g) Use your finger to confirm that the purge VSV has suction.
Result
C -- CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
B -- INSPECT PURGE VSV
A -- Continue to next step.
13. CHECK FUEL TANK CAP ASSEMBLY
(a) Check that the fuel tank cap is correctly installed and confirm that the fuel tank cap meets OEM specifications.
(b) Tighten the fuel tank cap firmly (only one click sound is heard).
HINT
If an EVAP tester is available, check the fuel tank cap using the tester.
(a) Remove the fuel tank cap and install it to a fuel tank cap adapter.
(b) Connect an EVAP tester pump hose to the adapter, and pressurize the fuel tank cap to between 3.2 and 3.7 kPa (24 and 28 mmHg) using an EVAP tester pump.
(c) Seal the adapter and wait for 2 minutes.
(d) Check the pressure. If the pressure is 2 kPa (15 mmHg) or higher, the fuel tank cap is normal.
Result
C -- REPLACE FUEL TANK CAP ASSEMBLY
B -- CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY
A -- LOCATE EVAP PART WHICH IS LEAKING
14. INSPECT PURGE VSV
(a) Turn the ignition switch off.
(b) Disconnect the purge VSV connector.
(c) Disconnect the hose (connected to the canister) from the purge VSV.
Text in Illustration
(d) Start the engine.
(e) Use your finger to confirm that the purge VSV has no suction.
Result
B -- REPLACE PURGE VSV
A -- REPLACE ECM
15. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
(a) Disconnect the hose (connected to the intake manifold) from the purge VSV.
Text in Illustration
(b) Start the engine.
(c) Use your finger to confirm that the hose has suction.
Result
B -- INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
A -- Continue to next step.
16. INSPECT PURGE VSV
(a) Remove the purge VSV.
(b) Apply 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
Text in Illustration
B -- REPLACE PURGE VSV
A -- Continue to next step.
17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV)
(a) Disconnect the purge VSV connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Result:
Text in Illustration
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
18. 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:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM
19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Result:
Text in Illustration
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)
(a) Turn the ignition switch off.
(b) Disconnect the R1 canister pump module connector.
(c) Apply battery voltage to the VLVB and VGND terminals of the canister pump module.
(d) Touch the canister pump module to confirm the vent valve operation.
Result
Text in Illustration
B -- REPLACE CANISTER ASSEMBLY
A -- Continue to next step.
21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)
(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 -- REPLACE ECM
22. PERFORM ACTIVE TEST USING TECHSTREAM (FOR LEAK DETECTION PUMP)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the ignition switch to ON.
(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.
Result:
Text in Illustration
C -- REPLACE ECM
B -- CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)
A -- Continue to next step.
23. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)
(a) Turn the ignition switch off.
(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 -- REPLACE CANISTER ASSEMBLY
24. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)
(a) Turn the ignition switch off.
(b) Disconnect the ECM connector.
(c) Disconnect the canister pump module connector.
(d) Measure the resistance according to the value(s) in the table below.
Result:
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- REPLACE ECM
25. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
(a) Stop the engine.
(b) Disconnect the EVAP hose from the intake manifold.
(c) Start the engine.
(d) Use your finger to confirm that the port of the intake manifold has suction.
Result
B -- INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
A -- REPLACE PURGE LINE HOSE (INTAKE MANIFOLD - PURGE VSV)
26. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY
HINT
* When reinstalling the fuel tank cap, tighten it until a click sound is heard.
* When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications and tighten it until a click sound is heard.
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
27. REPLACE FUEL TANK CAP ASSEMBLY
HINT
When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications and tighten it until a click sound is heard.
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
28. LOCATE EVAP PART WHICH IS LEAKING
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 between 3.2 and 3.7 kPa (24 and 28 mmHg).
(d) Apply soapy water to the piping and connecting parts of the EVAP system.
(e) Look for areas where bubbles appear. Bubbles indicate the leak point.
(f) Repair or replace the leak point.
HINT
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)
29. REPLACE CANISTER ASSEMBLY
(a) Replace the canister assembly 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.
Text in Illustration
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
30. REPLACE PURGE VSV
(a) Replace the purge VSV Removal.
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
31. REPAIR OR REPLACE HARNESS OR CONNECTOR
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
32. REPLACE PURGE LINE HOSE (INTAKE MANIFOLD - PURGE VSV)
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
33. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
(a) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold.
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
34. REPLACE ECM
(a) Replace the ECM Removal.
NEXT -- PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
35. 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 EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
36. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE)
NOTICE:
* The Evaporative System Check (Automatic Mode) consists of five steps performed automatically by the Techstream. It takes a maximum of approximately 18 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 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 an Evaporative System Check, keep the fuel temperature below 35°C (95°F).
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
(c) 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 -- COMPLETED
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 elevation is less than 2432 m (8000 ft.).
The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F).
The intake air temperature is between 4.4°C and 35°C (40°F and 95°F).
The vehicle remains stationary (the vehicle speed is 0 mph [0 km/h]).
(b) Monitor Conditions
Allow the engine to idle for at least 5 minutes.
Turn the ignition switch off and wait for 5 hours (7 or 9.5 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
Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Monitor / Evaporative System.
Check the Monitor Status displayed on the Techstream.
HINT
If INCMP (incomplete) is displayed, the monitor is not complete. Make sure that the preconditions have been met, and then perform the operations listed under Monitor Conditions again.
2. Purge flow monitor confirmation (P0441)
HINT
Perform this monitor confirmation after the Key-off Monitor Confirmation shows COMPL (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 engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F).
The intake air temperature is between 4.4°C and 35°C (40°F and 95°F).
(b) Monitor Conditions
Release the pressure from the fuel tank by removing and reinstalling the fuel tank cap.
Warm the engine up until the engine coolant temperature is higher than 75°C (167°F).
Increase the engine speed to 3000 rpm once.
Allow the engine to idle and turn the A/C on for 1 minute.
(c) Monitor Status
Turn the ignition switch off (if ON or if the engine is running).
Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Monitor.
Check the Monitor Status displayed on the Techstream.
HINT
If INCMP (incomplete) is displayed, the monitor is not complete. Make sure that the preconditions have been met, and then perform the operations listed under Monitor Conditions again.
MONITOR RESULT
Refer to Checking Monitor Status Mode 6 Data.