Can-Am DS 450 2008, Shop Manual

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Section 05 FUEL SYSTEM
Subsection 01 (ELECTRONIC FUEL INJECTION (EFI))
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THROTTLE BODY
1. Throttle position sensor (TPS)
2. Screws
Remove TPS.
TPS Installation
Installation is the reverse of the removal. Howev-
er, pay attention to the following.
Apply Loctite 243 (P/N 293 800 060) on the TPS
retaining screws.
Torque screws to 3 N•m (27 lbf• in ).
Reinstall remaining removed parts.
Proceed with the Closed Throttle and Idle Ac-
tuator Reset . See BASIC ADJUSTMENTS at the
beginning of this section.
IDLE AIR CONTROL VALVE
An idle air control valve with good resistance mea-
surement can still be faulty. It is also possible
that a mechanical failure occurs which is not de-
tectable without measuring the air flow. Replac-
ing the idle air control valve may be necessary as
a test.
If an erratic engine idle is experienced, clean the
idle air bypass in throttle body.
IACV Resistance Test
Disconnect idle air control valve connector.
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Using the Fluke 115 multimeter (P/N 529 035 868)
and select
.
Check the resistance in both windings.
NOTE: It is easier to remove IACV to measure the
resistance.
Check the resistance between pins as shown.
IDLE AIR CONTROL VALVE MEASUREMENT
PIN
RESISTANCE
@ 20°C (68°F)
A D
B C
45 - 55
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If the resistance of any winding is not good, re-
place the idle air control valve.
If resistance test of valve windings is good, check
continuity of IACV wiring between ECM and IACV
as follows.
Install ECM adapter (P/N 529 036 085) on ECM
connector and verify continuity.
200
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