Part 2

1GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System
- EVAP System

Continued

13. CHECK FUEL CAP ASSEMBLY

(a) Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specifications.

(b) Confirm that the fuel cap is tightened until a few click sounds are heard.

HINT
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 (24 to 28 mmHg) using an EVAP tester pump.

(3) Seal the adapter and wait for 2 minutes.

(4) Check the pressure. If the pressure is 2 kPa (15 mmHg) or more, the fuel cap is normal.

(5) Reinstall the fuel cap.

Result

C -- REPLACE FUEL CAP ASSEMBLY

B -- CORRECTLY REINSTALL OR REPLACE FUEL CAP ASSEMBLY

A -- REPAIR LOCATE EVAP LEAK

14. INSPECT VACUUM SWITCHING VALVE ASSEMBLY NO. 1

(a) Turn the ignition 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.

Result

(f) Reconnect the purge VSV connector.

(g) Reconnect the hose.

B -- REPLACE VACUUM SWITCHING VALVE ASSEMBLY NO. 1 (PURGE VSV)

A -- REPLACE ECM

15. CHECK EVAP HOSE (PURGE VSV - THROTTLE BODY)

(a) Disconnect the hose (connected to the throttle body) from the purge VSV.

(b) Start the engine.

(c) Use your finger to confirm that the hose has suction.

Result

(d) Reconnect the hose.

B -- INSPECT THROTTLE W/MOTOR BODY ASSEMBLY (EVAP PURGE PORT)
A -- Continue to next step.

16. INSPECT VACUUM SWITCHING VALVE ASSEMBLY NO. 1 (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

(d) Reinstall the purge VSV.

B -- REPLACE VACUUM SWITCHING VALVE ASSEMBLY NO. 1 (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 between terminal 1 of the purge VSV connector and the body ground.

Result

(d) Reconnect the purge VSV connector.

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 and the V4 purge VSV connector.

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

Standard Resistance:

(c) Reconnect the purge VSV connector.

(d) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM

19. PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON and turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve.

(d) Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the Techstream.

Result

B -- REPLACE ECM

A -- INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

20. PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON and turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine and ECT / Activate the VSV for Vent Valve.

(d) Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the Techstream.

Result

C -- REPLACE ECM

B -- INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)
A -- Continue to next step.

21. 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

(e) Reconnect the canister pump module connector.

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.

22. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

(a) Turn the ignition switch off.

(b) Disconnect the canister pump module connector.

(c) Apply the battery voltage to terminals 9 and 8 of the canister pump module.

(d) Touch the canister pump module to confirm the vent valve operation.

Result

(e) Reconnect the canister pump module connector.

B -- REPLACE CANISTER ASSEMBLY

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR

23. PERFORM ACTIVE TEST USING TECHSTREAM (FOR CANISTER PUMP MODULE (LEAK DETECTION PUMP))

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON and turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.

(d) Measure the voltage between terminal MPMP of the ECM connector and the body ground when the leak detection pump is turned ON and OFF using the Techstream.

Result

B -- REPLACE ECM
A -- Continue to next step.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch off.

(c) Disconnect the canister connector.

(d) Turn the ignition switch to ON and turn the Techstream on.

(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.

(f) Turn the leak detection pump ON.

(g) Measure the voltage between terminal 1 (MTRB) of the canister connector and the body ground.

Result

(h) Reconnect the canister connector.

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.

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

(a) Disconnect the canister connector.

(b) Turn the ignition switch off.

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

Result

(d) Reconnect the canister connector.

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

A -- REPLACE CANISTER ASSEMBLY

26. INSPECT THROTTLE W/MOTOR BODY ASSEMBLY (EVAP PURGE PORT)

(a) Stop the engine.

(b) Disconnect the EVAP hose from the throttle body.

(c) Start the engine.

(d) Use your finger to confirm that the port of the throttle body has suction.

Result

(e) Reconnect the EVAP hose.

B -- INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY

A -- REPLACE EVAP HOSE (THROTTLE BODY - PURGE VSV)

27. CORRECTLY REINSTALL OR REPLACE FUEL CAP ASSEMBLY

HINT
* When reinstalling the fuel cap, tighten it until a few click sounds are heard.
* When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it until a few click sounds are heard.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

28. REPLACE FUEL CAP ASSEMBLY

HINT
When installing the fuel cap, tighten it until a few click sounds are heard.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

29. REPAIR LOCATE EVAP LEAK

(a) Reinstall the fuel cap.

(b) Disconnect the vent hose.

(d) Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).

(e) Apply soapy water to the piping and connecting parts of the EVAP system.

(f) Look for areas where bubbles appear. This indicates a leak point.

(g) 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)

30. 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 or 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.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

31. REPLACE VACUUM SWITCHING VALVE ASSEMBLY NO. 1 (PURGE VSV)

(a) Disconnect the connector and the hoses from the purge VSV.

(b) Remove the purge VSV.

(c) Install a new purge VSV.

(d) Reconnect the connector and hoses.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

32. REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

33. REPLACE EVAP HOSE (THROTTLE BODY - PURGE VSV)

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

34. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY

(a) Remove the throttle with motor body Removal.

(b) Check that the EVAP purge port of the throttle body is not clogged. If necessary, replace the throttle body.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

35. REPLACE ECM

(a) Replace the ECM Removal.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

36. REPAIR OR REPLACE PARTS OR 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)

37. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

NOTICE:
* In the Evaporative System Check (Automatic Mode), the series of 5 Evaporative System Check steps is performed automatically. It takes a maximum of approximately 19 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 and making the leak check of the fuel tank unavailable.
* 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) Clear DTCs DTC Check / Clear.

(b) On the Techstream, 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 DTC is found, the repair has been successfully completed.

NEXT -- END

CONFIRMATION DRIVING PATTERN

HINT
After a repair, check the 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 8000 ft (2400 m)

* The Engine Coolant Temperature (ECT) is between 4.4 to 35°C (40 to 95°F)

* The Intake Air Temperature (IAT) is between 4.4 to 35°C (40 to 95°F)

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

(b) Monitor Conditions

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

* Turn the ignition switch off and wait for 5 to 10 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 is displayed, the monitor is not completed. 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 to 35°C (40 to 95°F)

* The IAT is between 4.4 to 35°C (40 to 95°F)

(b) Monitor Conditions

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

* Warm the engine up until the ECT reaches more 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 (where ON or 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 / Utility.

* Check the Monitor Status displayed on the Techstream.

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

MONITOR RESULT

Refer to CHECKING MONITOR STATUS Mode 6 Data.