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IM240 Inspection

INSPECTION

1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating temperature.




2. CONNECT VACUUM GAUGE
Install a EVAP control system test equipment vacuum gauge to the EVAP service port on the purge line.




3. TOYOTA Hand-Held tester: FORCED DRIVING OF VSV FOR EVAP
a. Connect a TOYOTA hand-held tester to the DLC3.
b. Start the engine.
c. Push the TOYOTA hand-held tester main switch ON.
d. Use the ACTIVE TEST mode on the TOYOTA hand-held tester to operate the [1][2]VSV for the EVAP.




4. If You Have No TOYOTA Hand-Held tester: FORCED DRIVING OF VSV FOR EVAP
a. Disconnect the [1][2]VSV connector for the EVAP.
b. Connect the positive (+) and negative (-) leads from the battery to the [1][2]VSV terminals for the EVAP
c. Start the engine.




5. INSPECT FOR VACUUM
Check the vacuum at idle.

Vacuum: Maintain at 5-268 in.Aq for over 5 seconds

HINT: If the vacuum does not change, you can conclude that the hose connecting the [1][2]VSV to the service port has come loose or is blocked, or the VSV is malfunctioning.

6. TOYOTA Hand-Held Tester: CONCLUDE FORCED DRIVING OF VSV FOR EVAP
a. Stop the engine.
b. Disconnect the TOYOTA hand-held tester from the DLC3.

7. If You Have No TOYOTA Hand-Held Tester: CONCLUDE FORCED DRIVING OF VSV FOR EVAP
a. Stop the engine.
b. Disconnect the positive (+) and negative (-) leads from the battery from the [1][2]VSV terminals the EVAP.
c. Connect the [1][2]VSV connector for the EVAP.

8. DISCONNECT VACUUM GAUGE

9. CONNECT PRESSURE GAUGE




10. INSPECT FOR PRESSURE
a. Close off the air drain hose of the canister with a hose clipper or similar instrument.




b. Add the pressure (13.5-15.5 in.Aq) from the EVAP service port.

Pressure: 2 minutes alter the pressure is added, the gauge should be over 7.7-8.8 in.Aq.

HINT: If you can't add pressure, you can conclude that the hose connecting the [1][2]VSV~canister~fuel tank has slipped off or the VSV is open.




c. Check if the pressure decreases when the fuel tank cap is removed while adding pressure.

HINT: If the pressure does not decrease when the filler cap is removed, then you can conclude that the hose connecting the service port to the fuel tank is blocked, etc.

11. DISCONNECT PRESSURE GAUGE
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