BRP Outlander 400 EFI 2008, Service Manual

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Section 05 FUEL SYSTEM
Subsection 01 (ELECTRONIC FUEL INJECTION)
Check related-circuit fuse solidity and condition
with an ohmmeter. Visual inspection could lead
to false results.
After a problem has been solved, ensure to clear
the fault(s) in the ECM using the B.U.D.S. soft-
ware. Refer to
MONITORING SYSTEM/FAULT
CODES subsection.

WARNING
Some EMS components are continuously
powered by the battery when ignition key
is turned on and engine stop switch is set
in RUN position. The ECM switches the cir-
cuit to the ground to complete the electrical
circuits it controls. Take this into account
when troubleshooting.
Always disconnect
the battery prior to disconnecting any electric
or electronic parts.
Electrical Connectors
Pay particular attention to ensure that pins are not
out of their connectors or out of shape.
Make sure terminals are properly crimped on
wires and fastened in housing, and that they are
free of corrosion or moisture.
When probing terminals, pay attention not to bend
the terminal as this could bring a loose connection
that would be difficult to troubleshoot.
Pay attention to the following:
– ECM connectors:
Do not apply dielectric
grease or any other lubricant.
– Other connectors: Apply a silicon-based dielec-
tric grease or other appropriate lubricant.
Resistance Measurement
When measuring the resistance with an ohmme-
ter, all values are given for a temperature of 20°C
(68°F). The resistance value of a resistance varies
with the temperature. The resistance value for
usual resistor or windings (such as injectors)
in-
creases as the temperature increases. However,
our temperature sensors are NTC types (Negative
Temperature Coefficient) and work the opposite
which means that the resistance value
decreases
as the temperature increases. Take it into account
when measuring at temperatures different from
20°C (68°F). Use the proper table for resistance
variation relative to temperature for
temperature
sensors. See the specific sensor.
The resistance value of a temperature sensor may
test good at a certain temperature but it might be
defective at other temperatures. If in doubt, try a
new sensor.
Also remember this validates the operation of the
sensor at room temperature. It does not validate
the over temperature functionality. To test it, the
sensor could be removed from the engine and
heated with a heat gun while it is still connected to
the harness to see if the ECM will detect the high
temperature condition and generate a fault code.
BASIC ADJUSTMENTS
IDLE SPEED
The idle speed is not adjustable . The ECM con-
trols the idle speed of the engine.
CAUTION: Never attempt to adjust the sealed
idle stop screw. It is calibrated at the factory.
If the screw adjustment is changed, the throttle
body must be replaced.
If desired, the engine RPM can be verified with a
tachometer (P/N 529 014 500).
Remove LH side panel. Refer to
BODY.
Install the tachometer wire on spark plug cable.
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CLOSED THROTTLE AND IDLE
ACTUATOR RESET
NOTE: This operation performs a reset of the val-
ues in the ECM.
This reset is very important. The setting of the
TPS will determine the basic parameters for all fu-
el mapping and several ECM calculations and the
setting of the idle air control valve will determine
the basic parameters for the idle speed control of
the engine.
Closed throttle and idle actuator reset must be
done if:
– TPS is loosened, removed or replaced.
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