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