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The valve control system of frequency of rotation of idling

When the engine is idling the throttle valve is almost completely closed. Therefore, for normal engine operation required adjustment of air supplied to the bypass throttle.

The valve control system of frequency of rotation of idling (IAC) allows you to maintain a constant engine speed of the engine at idle and increase the mechanical and electrical loads. The engine control module (PCM) responds to changes in engine speed at idle due to changes in load conditions, and controls the solenoid control valve control idle speed.

Check

PERFORMANCE ORDER

1. Start the engine and warm it up to normal operating temperature. 2. Make sure you hear the clicks and if the frequency increases engine speed to 1000 min -1 for disconnecting the electromagnetic valve control system of frequency of rotation of idling (IAC). 3. If the frequency of engine speed does not change, check the IAC valve as follows. 4. Disconnect the electrical connector from valve IAC. 5. Measure the resistance of the valve IAC. Resistance: 15-18,2 ohms (at 20 ?� C) 6. If the resistance is not within the specified range of values, replace the valve IAC.