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STELVIO 4V - 1200
•
Make sure there are no errors in the
control unit; otherwise, solve them and
repeat the procedure.
•
Make sure the left throttle is fully in.
DO NOT TOUCH THE THROTTLE ABUTMENT SCREW OR
THE THROTTLE BODY MUST BE REPLACED. CHECK
THAT THE THROTTLE RETURN CABLE IS NOT TAUT.
•
The instrument should display the adjustable parameters screen page.
•
Autodetect the throttle position.
•
Turn the key to "OFF" and leave it for
at least 30 seconds.
•
Turn the key back to "ON" and restore
the instrument session.
•
Check that the "Throttle" value reading
is 4.7 +/- 0.2°. If the value is incorrect,
replace the control unit and repeat the
procedure from the start.
•
Completely close the two by-pass
screws on the throttle bodies.
•
Start the engine.
•
Take the engine to the prescribed tem-
perature: 60 °C (140 °F).
•
Make the engine rev at 2000/3000 rpm
and with the vacuometer check that the
difference between the two pressures
is 1 cm Hg (1.33 kPa) maximum.
If this condition is detected:
•
take the engine back to idle and check
the depression values so that they are
aligned between the two cylinders.
Otherwise, open only the screw with
higher depression, using the by-pass
screws, to compensate.
Power supply
P SUPP - 185
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