Checking the Operation of the Idle Speed Control

Checking The Operation Of The Idle Speed Control







- Remove the airflow restriction
- Idling speed should increase markedly and then stabilize at about 900 rpm after 10-20 seconds.

Is the function correct?

NO - Continue With Checking The Operation Of The Idle Speed Control

YES - Choice of Gearbox







- Detach the valve's air hoses.
- Remove the idle speed control valve.







- Turn the ignition switch to the ON position.












- Contact Trionic 5 OBDII.
- Activate:

IAC Valve
- Check visually that the slide rotates without displaying any tendency to bind.

Is the function correct?

NO - Changing Components

YES - Continue With Checking The Operation Of The Idle Speed Control







- Visually check the valve's electrical connections.

If necessary, clean and grease the contacts/connectors.
- Check to see whether the symptoms persist.

Do dips in engine rpm still occur?

NO - Continue With Checking The Operation Of The Idle Speed Control

YES - Choice of Gearbox

The steps taken to rectify the fault were correct.

After performing this procedure Final Check