IDLE SPEED 690 ENGINE TEMP MORE THAN 80DEG
IN PARK
AIR ON OFF IAC VALVE STEP 57
AIR CON ON STEPS GO TO 70
IDLE SPEED WITH AIR CON 750
WHEN COLD IDLE SPEED SHOULD START AT 1500 RPM
AIR MASS FREQUENCY AT IDLE :

Mitsubishi Magna v6 Book

Actuation test 30
Select item No. 30 of the MUT-II Actuator Test.
NOTE
This holds the ISC servo at the basic step to adjust the
basic idle speed. (i guess 8 steps)
Check the idle speed. Standard value: 700 ± 100 r/min
30 Basic idle speed
Set ISC servo to basic step
Engine idle speed Stepper motor approx. 8 steps

ON-VEHICLE SERVICE
THROTTLE BODY (THROTTLE VALVE AREA)
CLEANING

1. Start the engine and warm it up until the coolant is heated
   to 80C or higher and then stop the engine.
2. Remove the air intake hose from the throttle body.
3. Plug the bypass passage inlet (arrow) of the throttle body.
   Caution
   Do not allow cleaning solvent to enter the bypass
   passage.
4. Spray cleaning solvent into the valve through the throttle
   body intake port and leave it for about 5 minutes.
5. Start the engine, race it several times and idle it for about
   1 minute. If the idling speed becomes unstable (or if the
   engine stalls) due to the bypass passage being plugged,
   slightly open the throttle valve to keep the engine running.
6. If the throttle valve deposits are not removed, repeat
   steps 4 and 5.
7. Unplug the bypass passage inlet.
8. Attach the air intake hose.
9. Use the MUT-II to erase the diagnosis trouble code.
10. Adjust the basic idle speed. (Refer On Vehicle Service.)
    NOTE
    If the engine hunts while idling after adjustment of the
    basic idle speed, disconnect the (–) cable from the battery
    for 10 seconds or more, and then reconnect it and run
    the engine at idle for about 10 minutes.

this was taken from mitsubishi magna book v6

45 ISC servo (stepper motor) position *6

Engine coolant temperature:80 – 95C

Lights, electric cooling fan and all accessories: OFF

Transmission: P range)
Idle position switch: ON

Engine: Idling (When A/C switch is ON, A/C compressor should be operating)

A/C switch: OFF Increases by
2–25 steps
A/C switch: OFF → ON Increases by
10–70 steps
A/C switch: OFF
Select lever: N range → D range Increases by
5–50 steps

12 Air flow sensor

Engine coolant temperature: 80–95C
 Lights, electric cooling fan and all accessories: OFF

Transmission: Neutral (A/T: P range)

Engine is idling
18–44 Hz
2,500 r/min
43–83 Hz

Engine is raced Frequency increases
in response
to racing

SPECS from AUTODATA