Part 2

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

11. PERFORM EVAP SYSTEM CHECK (STEP 3/6)

(a) Check the EVAP pressure in step 3/6.

Result

*: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

HINT
The first reference pressure is the value determined in step 2/6.

A -- REPLACE CANISTER

B -- PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP)

12. INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT)

(a) Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure P0451.

NEXT -- PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

(a) Turn the power switch off.

(b) Disconnect the canister pump module connector.

Text in Illustration

(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.

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

(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.

Standard Resistance:

Result

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

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

(a) Disconnect the canister pump module connector.

(b) 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.

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

(a) Disconnect the canister pump module connector.

(b) Disconnect the hybrid vehicle control ECU 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

17. 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

B -- CHECK FUEL CAP ASSEMBLY

C -- INSPECT PURGE VSV

D -- CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
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 HYBRID VEHICLE CONTROL ECU

NG -- REPLACE CANISTER

20. CHECK FUEL 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 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 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) Start the engine.

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

Result

A -- CHECK HARNESS AND CONNECTOR (PURGE VSV - HYBRID VEHICLE CONTROL ECU)

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.

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.

24. INSPECT PURGE VSV

(a) Remove the purge VSV.

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

Text in Illustration

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 power switch on (IG).

Text in Illustration

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

26. CHECK HARNESS AND CONNECTOR (PURGE VSV - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the hybrid vehicle control ECU connector.

(b) Disconnect the purge VSV connector.

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

Standard Resistance:

OK -- REPLACE HYBRID VEHICLE CONTROL ECU

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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

(a) Turn the power switch off.

Text in Illustration

(b) Disconnect the canister pump module connector.

(c) Turn the power switch to 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 power switch off.

(b) Disconnect the canister pump module connector.

Text in Illustration

(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 - HYBRID VEHICLE CONTROL ECU)

(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

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 HYBRID VEHICLE CONTROL ECU

NG -- REPLACE CANISTER

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

(a) Turn the power switch off.

(b) Disconnect the canister pump module connector.

Text in Illustration

(c) Turn the power 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

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

C -- REPLACE HYBRID VEHICLE CONTROL ECU
A -- Continue to next step.

32. 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

A -- REPLACE CANISTER

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

33. 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.

Standard Resistance:

Result

A -- REPLACE HYBRID VEHICLE CONTROL ECU

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR

34. 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

A -- REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV)

B -- INSPECT INTAKE MANIFOLD (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)