Part 2

2UR-GSE ENGINE CONTROL: SFI SYSTEM: EVAP System
- EVAP System (Continued)

17. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV)

(a) Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control.

(b) Disconnect the hose (connected to the canister) from the purge VSV.

(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

B -- CHECK FUEL CAP

C -- INSPECT PURGE VSV

D -- CHECK EVAP HOSE (PURGE VSV - INTAKE AIR SURGE TANK ASSEMBLY)
A -- Continue to next step.

18. 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.

19. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER)

(a) Check for filter blockage in the canister Testing and Inspection.

OK:

No blockages in the canister.

OK -- REPLACE ECM

NG -- REPLACE CANISTER

20. CHECK FUEL CAP

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

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

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

(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 28 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 more, the fuel cap is normal.

Result

A -- LOCATE EVAP LEAK PART

B -- CORRECTLY REINSTALL OR REPLACE FUEL CAP

C -- REPLACE FUEL 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.

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 AIR SURGE TANK ASSEMBLY)

(a) Disconnect the hose (connected to the intake air surge tank assembly) from the purge VSV.

(b) Start the engine.

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

Result

B -- INSPECT INTAKE AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT)
A -- Continue to next step.

24. INSPECT PURGE VSV

(a) Remove the purge VSV.

(b) Apply battery voltage to the terminals of the purge VSV.

B -- REPLACE PURGE VSV
A -- Continue to next step.

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

(a) Disconnect the purge VSV connector.

(b) Turn the engine switch on (IG).

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.

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 VLVB and VGND of the pump module.

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

Result

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

29. 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

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 Testing and Inspection.

OK:

No blockages in the canister.

OK -- REPLACE ECM

NG -- REPLACE CANISTER

31. PERFORM ACTIVE TEST USING TECHSTREAM (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 / Active Test / Activate the Vacuum Pump.

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

Result

B -- CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

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 (ECM - CANISTER PUMP MODULE)

(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.

Standard Resistance:

Result

A -- REPLACE ECM

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

34. INSPECT INTAKE AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT)

(a) Stop the engine.

(b) Disconnect the EVAP hose from the intake air surge tank assembly.

(c) Start the engine.

(d) Use your finger to confirm that the port of the intake air surge tank assembly has suction.

Result

A -- REPAIR OR REPLACE EVAP PURGE LINE (INTAKE AIR SURGE TANK ASSEMBLY - PURGE VSV)

B -- INSPECT INTAKE AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT)

35. CORRECTLY REINSTALL OR REPLACE FUEL CAP

HINT
* 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 EVAP SYSTEM CHECK (AUTOMATIC MODE)

36. REPLACE FUEL CAP

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

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

37. LOCATE EVAP LEAK PART

(a) Disconnect the vent hose.

(b) Connect the EVAP pressure tester tool to the canister pump module with the adapter.

(c) Pressurize the EVAP system to 3.2 to 3.7 kPa(gauge) [24 to 28 mmHg(gauge)].

(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 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.

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)