Scan Tool Operating Instructions - AK Automotive Training

Manufacturer Applications
If the OmiCheck screen displays 'Lower', an adjustment is required to lower the
stepper motor position. For this to happen the air by-pass screw needs adjusting as
if to raise the engine speed.
If the OmiCheck screen displays 'Raise', an adjustment is required to raise the
stepper motor position. For this to happen the air by-pass screw needs adjusting as
if to lower the engine speed.
NOTE: Adjustment of the air by-pass screw will not change the engine speed as it is
under control of the ECU.
Press if unable to set correctly using air by-pass or throttle adjustment.
ECU Replacement
The MEMS idle control is an adaptive system and the ECU `learns' the engine load
and wear characteristics over a period of time. The amount of stepper motor
movement required to maintain the specified idle consequently will differ from model
to model. In the event of a new ECU or an ECU from another vehicle being fitted, it
will take a short period of normal running for the ECU to learn the load and wear
characteristics of that engine.
WARNING: Whenever a different ECU is fitted, a full tune with the OmiCheck
must take place, as idle CO 2 and stepper position could differ, which can ONLY
be set by adjusting the ECU.
Immobilisation
Follow the on-screen instructions to perform a security check and if security is
supported, program the alarm immobilisation.
Maintenance
The maintenance selection allows the resetting of the adaptations to factory settings
for the components listed in the menu. It is recommended that the adaptations be
reset to factory settings as opposed to the 'learned' settings once the components
have been replaced.
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This screen indicates the stepper position
is correct and the 'Tick' key can be
pressed.