Idle Air Control System Test

This test is conducted to check IAC system for proper operation.

Tech 2 must be used for this test.

Test Procedure: 

1. Connect Tech 2 to the vehicle DLC.
2. Run the Engine at idle.
3. Select F3: Miscellaneous Test in the Application Menu.
   Fig 1: Selecting F3: Miscellaneous Test In Application Menu

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4. Select F3: IAC System Test in the Miscellaneous Test.
   Fig 2: Selecting F3: IAC System Test In Miscellaneous Test

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5. Select F1: IAC Control Test.
   Fig 3: Selecting F1: IAC Control Test

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6. Push "Decrease" or "Increase" soft key.
7. Control IAC system and check data list.
8. If the data list changes, the IAC Control is normal.
9. Select F0: IAC Control.
10. Push "Decrease" or "Increase" soft key.
11. Control RPM and check data list.
12. If the data list changes, the RPM Control is normal.
13. Select F2: Reset IAC BLM.
14. Push "Reset IAC" soft key.
15. Control IAC Reset and check data list.
16. If data list changes, the IAC has been Reset.