Can-Am DS 450 2008 Shop Manual page 207

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If voltage is out of specification, check wiring and
connectors from ECM fuse to ECM through igni-
tion and engine stop switches. Refer to
SYSTEM
.
If voltage is as per specification, carry out the
MAIN RELAY CIRCUIT TEST
ECM Main Relay Circuit Test
Remove front body ass'y. Refer to
Pull out the main relay from its socket.
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Remove a neighboring relay and temporarily install
to the main relay location.
If ECM is now working, replace the faulty main
relay with a new one.
If ECM still does not work:
– Check control circuit wiring and connectors
from main fuse through the relay socket to
ECM.
– Check power circuit wiring and connectors from
main fuse through the relay socket and through
the injector/ignition fuse to ECM.
If faulty, repair or replace wiring and connectors.
If everything tested good but ECM does not work,
try a new ECM. Refer to
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Subsection 01 (ELECTRONIC FUEL INJECTION (EFI))
IGNITION
ECM
.
BODY
.
ECM REPLACEMENT.
Section 05 FUEL SYSTEM
ECM Removal
NOTE: If ECM is removed for replacement, refer
ECM REPLACEMENT
first to
Remove seat. Refer to
Disconnect battery cables.
WARNING
Battery BLACK negative cable must always be
disconnected first and connected last.
Remove front body ass'y. Refer to
Disconnect ECM connector. Refer to
NECTOR REMOVAL
.
Unscrew retaining screws and remove the ECM
from vehicle.
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ECM Installation
Install the new ECM to the vehicle.
Reconnect ECM connector.
further.
BODY.
BODY
.
ECM CON-
187