Yamaha Grizzly550 User Manual page 389

Fault code No. 43
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Fuel injection system relay
• Main wire harness-ECU coupler
2 Open or short circuit in the wire har-
ness.
3 Malfunction or open circuit in fuel in-
jection system relay
Fault code No. 44
Diagnostic code No.
Order Item/components and probable
cause
1 Malfunction in ECU.
Symptom Power supply to the fuel injector and fuel pump is not nor-
mal.
d09 Fuel system voltage
Check or maintenance job
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between fuel injection system
• Between fuel injection system
• Between fuel injection system
• Execute the diagnostic mode.
• Replace if defective.
• If there is no malfunction with
Symptom Error is detected while reading or writing on EEPROM (CO
adjustment value).
d60 EEPROM improper cylinder indication
Check or maintenance job
• Execute the diagnostic mode.
• Replace the ECU if defective.
9-52
FUEL INJECTION SYSTEM
that may have pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
relay coupler and ECU coupler.
(blue/red–blue/red)
(red/blue–red/blue)
relay coupler and starter relay
coupler.
(brown/black–brown/black)
relay coupler and left handle-
bar switch coupler.
(red/black–red/black)
(Code No. d09)
the fuel injection system relay,
replace the ECU.
(Code No. d60)
Reinstatement
method
Starting the en-
gine and oper-
ating it at idle.
Reinstatement
method
Setting the
main switch to
"ON".
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