Throttle Body Inspection; Testing Injector Operation; Throttle Body; Throttle Position Sensor - APRILIA ETV mille Workshop Manual

ETV mille

4.10 THROTTLE BODY INSPECTION

4.10.1 TESTING INJECTOR OPERATION

CAUTION
Fuel is explosive and highly flammable.
Keep fuel away from any sources of ignition, heat or
flames.
NOTE
Injectors may also be inspected in the machine.
Check the following components:
- wiring and connections;
- injector or ECU injection signal, see 6.5 (IGNITION/
INJECTION SYSTEM).
Injector resistance test:
See 6.6.1 (INJECTOR TEST).

4.10.2 THROTTLE BODY

WARNING
Use only neutral detergents.
Clean with a sealing compound remover, a degreaser
or a detergent for cold cleaning.
!
Blow all openings and ducts of the throttle body with
compressed air.

4.10.3 THROTTLE POSITION SENSOR

WARNING
The two socket-head screws securing the throttle
position sensor (potentiometer) (1) are coated with
paint at the factory and must not be disturbed. The
throttle position sensor can only be set when
installed from new, that is when it is replaced.
!
Position the throttle position sensor (1) to the throttle
spindle. Place the sensor in a horizontal position and
rotate downwards.
NOTE
Apply LOCTITE
screws (2).
!
Tighten the two screws M4x12 (2).
Torque wrench setting for screws (2): 3.5 Nm
(0.35 kgm).
!
Position the throttle position sensor (1),
(SETTING THE THROTTLE POSITION SENSOR) .
Release 00/2004 - 04
®
243 to the threads of the
4.10.6
1
2
FUEL SYSTEM
2
4
- 17 -
00