Part 2
1AR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System
- EVAP System - Continued
NOTICE:
If the reference pressure difference between the first and second checks is more than the specification, the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.
NEXT -- Continue to next step.
2. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)
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 leak check of the fuel tank unavailable.
* Do not run the engine during this operation.
* 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 the Evaporative System Check, keep the temperature below 35°C (95°F).
(a) Connect the Techstream to the DLC3.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
(d) After the Evaporative System Check is completed, check for pending DTCs. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
HINT
If no pending DTC is displayed, perform the Monitor Confirmation after this repair is completed. After this confirmation, check for pending DTCs. If no DTC is displayed, the EVAP system is normal.
NEXT -- Continue to next step.
3. PERFORM EVAP SYSTEM CHECK (MANUAL MODE)
NOTICE:
* In the Evaporative System Check (Manual Mode), the series of 5 Evaporative System Check steps are performed manually using the Techstream.
* 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 leak check of the fuel tank unavailable.
* Do not run the engine during this operation.
* 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 the Evaporative System Check, keep the temperature below 35°C (95°F).
(a) Connect the Techstream to the DLC3.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode.
NEXT -- Continue to next step.
4. PERFORM EVAP SYSTEM CHECK (STEP 1/5)
(a) Check the EVAP pressure in step 1/5.
Result:
*: The DTCs relating to the EVAP system displayed on the Techstream when checking.
B -- REPLACE CHARCOAL CANISTER ASSEMBLY
A -- Continue to next step.
5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5)
(a) Check the EVAP pressure in steps 1/5 and 2/5.
Result:
*: The DTCs related to the EVAP system are displayed on the Techstream when checking.
HINT
The first reference pressure standard is the value determined in step 2/5.
B -- PERFORM ACTIVE TEST USING TECHSTREAM (FOR CANISTER PUMP MODULE)
A -- Continue to next step.
6. PERFORM EVAP SYSTEM CHECK (STEP 2/5)
HINT
Make a note of the pressures checked in steps "A" and "B" below.
(a) Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (Step "A").
(b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure standard (Step "B").
*1: The leak detection pump begins to operate at the time step 2/5 starts.
Result:
*2: The DTCs related to the EVAP system are displayed on the Techstream when checking.
D -- PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE)
C -- REPLACE CHARCOAL CANISTER ASSEMBLY
B -- PERFORM EVAP SYSTEM CHECK (STEP 3/5)
A -- Continue to next step.
7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5)
(a) Check the EVAP pressure increase in step 3/5.
Result:
*: The DTCs related to the EVAP system are displayed on the Techstream when checking.
C -- REPLACE CHARCOAL CANISTER ASSEMBLY
B -- PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE)
A -- Continue to next step.
8. PERFORM EVAP SYSTEM CHECK (STEP 3/5)
(a) Wait until the EVAP pressure change is less than 0.1 kPa-g (0.75 mmHg-g) for 30 seconds.
(b) Measure the EVAP pressure and record it.
HINT
A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes.
NEXT -- Continue to next step.
9. PERFORM EVAP SYSTEM CHECK (STEP 4/5)
(a) Check the EVAP pressure in step 4/5.
Result:
*: The DTCs related to the EVAP system are displayed on the Techstream when checking.
C -- PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV)
B -- CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
A -- Continue to next step.
10. PERFORM EVAP SYSTEM CHECK (STEP 5/5)
(a) Check the EVAP pressure in step 5/5.
(b) Compare the EVAP pressure in step 3/5 and the second reference pressure standard (step 5/5).
Result:
*: The DTCs related to the EVAP system are displayed on the Techstream when checking.
B -- PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV)
A -- REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS
11. PERFORM EVAP SYSTEM CHECK (STEP 3/5)
(a) Check the EVAP pressure in step 3/5.
Result:
*: The DTCs related to the EVAP system are displayed on the Techstream when checking.
HINT
The first reference pressure standard is the value determined in step 2/5.
B -- PERFORM ACTIVE TEST USING TECHSTREAM (FOR CANISTER PUMP MODULE)
A -- REPLACE CHARCOAL CANISTER ASSEMBLY
12. 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 (EVAP VSV: OFF).
(e) Confirm that the purge VSV has no suction with your fingers.
(f) Using the Techstream, turn on the purge VSV (EVAP VSV: ON).
(g) Confirm that the purge VSV has suction with your fingers.
Result:
(h) Reconnect the hose.
C -- CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
B -- INSPECT PURGE VSV
A -- Continue to next step.
13. CHECK FUEL CAP ASSEMBLY
(a) Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specification.
HINT
If an EVAP tester is available, check the fuel cap using the tester.
(1) Tighten the fuel cap.
(2) Remove the fuel cap and install it onto the fuel cap adaptor.
(3) Connect the EVAP tester pump hose to the adaptor, and pressurize the cap to 3.2 to 3.7 kPa-g (24 to 28 mmHg-g) using an EVAP tester pump.
(4) Seal the adaptor and wait for 2 minutes.
(5) Check the pressure. If the pressure is 2 kPa-g (15 mmHg-g) or more, the fuel cap is normal.
Result:
C -- REPLACE FUEL CAP ASSEMBLY
B -- CORRECTLY REINSTALL OR REPLACE FUEL CAP
A -- LOCATE EVAP LEAK
14. INSPECT PURGE VSV
(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) Confirm that the purge VSV has no suction with your fingers.
Result:
(f) Reconnect the purge VSV connector.
(g) Reconnect the hose.
B -- REPLACE PURGE VSV
A -- REPLACE ECM
15. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)
(a) Disconnect the hose (connected to the intake manifold) from the purge VSV.
(b) Start the engine.
(c) Confirm that the hose has suction with your fingers.
Result:
(d) Reconnect the hose.
B -- INSPECT INTAKE MANIFOLD
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.
(c) Using compressed air, confirm that air flows from port A to port B.
Result:
(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 ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
