IAC1 Check Overall Function

- Key OFF.

- Connect Rotunda NGS Scan Tool 007-00500.

- Run the engine.

- Select ENGINE.

- Select ACTIVE TESTS.

- Select IAC VALVE OPENING.

- Perform IAC test.

- Does the engine speed change according to the opening percent?

YES -- IAC solenoid is OK. If sent here from QT11, RETURN to the Diagnostic Routines. Diagnostic Routines Index

NO -- GO to IAC2. IAC2 Check Power Supply