Installing the throttle body
•
When installing the throttle body, refer
to the electrical system section for the
correct cable routing.
•
Ensure that the injector connectors are
correctly fastened.
•
Connect the control unit connector, en-
suring that the security lock is in the
locked position.
Stepper motor
The control unit regulates the idle speed by controlling the throttle body motors directly. As a result, idle
speed adjustment and maintenance of the components involved in idle speed regulation (stepper mo-
tors, thermoactuators, etc.) are not necessary.
Variable geometry intake
(IF AVAILABLE)
To access the variable geometry intake system,
remove the air filter box cover.
The system consists of: two intake ducts for each
manifold, which may be joined (long ducts) or sep-
arated (short ducts)
CAUTION
TAKE PARTICULAR CARE DURING REASSEMBLY: THE
SCREW SEAT WITH THE CHAMFER IS ASSEMBLED IN
THE FRONT PART
Electric motor
This is a DC motor actuating the upper portion of
the intake ducts through an endless circuit.
CAUTION
TAKE PARTICULAR CARE DURING REASSEMBLY. THE
POSITIVE SIDE (1) OF THE CONNECTOR MUST MATCH
WITH THE SIDE WHERE A NOTCH (2) IS INDICATED.
Power supply RSV4 R
P SUPP - 356