Tracker 4WD L4-1.6L VIN 6 (1998)
Idle Air Control (IAC) Valve: Description and Operation
Idle Air Control (IAC) Valve
The IAC valve (1) opens and closes the air bypass passage according to a signal from the Powertrain Control Module (PCM). When the AC valve
opens, air (2) is supplied to the intake manifold which increases the engine RPM for various engine loads.
