Part 2

2AZ-FXE ENGINE CONTROL: SFI SYSTEM: EVAP System
- EVAP System

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) Put the engine in inspection mode Component Tests and General Diagnostics.

(d) Start the engine.

(e) Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF).

(f) Use your finger to confirm that the purge VSV has no suction.

(g) Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON).

(h) Use your finger to confirm that the purge VSV has suction.

Result:

(i) Reconnect the hose.

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 cap is correctly installed and confirm that the fuel cap meets OEM specifications.

(b) Tighten the fuel cap until a few click sounds are heard.

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

(a) Remove the fuel cap and install it onto a fuel cap adapter.
(b) Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa-g (24 to 28 mmHg-g) using the EVAP tester pump.
(c) Seal the adapter and wait for 2 minutes.
(d) Check the pressure. If the pressure is 2 kPa-g (15 mmHg-g) or more, the fuel cap is normal.

Result:

(c) Reinstall the fuel cap.

C -- REPLACE FUEL TANK CAP ASSEMBLY

B -- CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY

A -- LOCATE EVAP LEAK PART

14. INSPECT PURGE VSV

(a) Turn the power switch off.

(b) Disconnect the purge VSV connector.

Text in Illustration

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

(d) Put the engine in inspection mode Component Tests and General Diagnostics.

(e) Start the engine.

(f) Use your finger to confirm that the purge VSV has no suction.

Result:

(g) Reconnect the purge VSV connector.

(h) Reconnect the hose.

B -- REPLACE PURGE VSV

A -- REPLACE HYBRID VEHICLE CONTROL ECU

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) Put the engine in inspection mode Component Tests and General Diagnostics.

(c) Start the engine.

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

Result:

(e) Reconnect the hose.

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.

Text in Illustration

(d) Install the purge VSV.

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 power switch on (IG).

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

Text in Illustration

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 - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the hybrid vehicle control ECU connector and the purge VSV connector.

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

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

(c) Reconnect the purge VSV connector.

(d) Reconnect the hybrid vehicle control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HYBRID VEHICLE CONTROL ECU

19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)

(a) Turn the power switch off.

(b) Disconnect the canister pump module connector.

(c) Turn the power switch on (IG).

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

Result:

Text in Illustration

(e) Reconnect the canister pump module connector.

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

20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

(a) Turn the power switch off.

(b) Disconnect the 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.

Text in Illustration

Result:

(e) Reconnect the canister pump module connector.

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

21. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - CANISTER PUMP MODULE)

(a) Disconnect the hybrid vehicle control ECU connector.

(b) Disconnect the canister pump module connector.

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

Result:

(d) Reconnect the hybrid vehicle control ECU connector.

(e) Reconnect the canister pump module connector.

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

A -- REPLACE HYBRID VEHICLE CONTROL ECU

22. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP)

(a) Turn the power switch off.

(b) Disconnect the canister pump module connector.

(c) Turn the power 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.

Result:

Text in Illustration

C -- REPLACE HYBRID VEHICLE CONTROL ECU

B -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - CANISTER PUMP MODULE)
A -- Continue to next step.

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

(a) Turn the power switch off.

(b) Disconnect the canister pump module connector.

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

Result:

(d) Reconnect the canister pump module connector.

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

A -- REPLACE CANISTER

24. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - CANISTER PUMP MODULE)

(a) Turn the power switch off.

(b) Disconnect the canister pump module connector.

(c) Disconnect the hybrid vehicle control ECU connector.

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

Result:

(e) Reconnect the canister pump module connector.

(f) Reconnect the hybrid vehicle control ECU connector.

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

A -- REPLACE HYBRID VEHICLE CONTROL ECU

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:

(e) Reconnect the EVAP hose.

B -- INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)

A -- REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV)

26. CORRECTLY REINSTALL OR REPLACE FUEL TANK 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 (AUTO OPERATION)

27. REPLACE FUEL TANK CAP ASSEMBLY

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

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

28. LOCATE EVAP LEAK PART

(a) Disconnect the vent hose.

Text in Illustration

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

Text in Illustration

(c) Pressurize the EVAP system to 3.2 to 3.7 kPa-g (24 to 28 mmHg-g).

(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 (AUTO OPERATION)

29. 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.

Text in Illustration

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

30. REPLACE PURGE VSV

(a) Replace purge VSV Removal.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

31. REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

32. REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV)

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

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 EVAP SYSTEM CHECK (AUTO OPERATION)

34. REPLACE HYBRID VEHICLE CONTROL ECU

(a) Replace the hybrid vehicle control ECU Removal.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

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 -- Continue to next step.

36. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

NOTICE:
* In the Evaporative System Check (Automatic Mode), a series of 5 steps is 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, making the fuel tank leak check 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 fuel temperature below 35°C (95°F).

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Clear the 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 -- COMPLETED