Part 2

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

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.