Yamaha Grizzly550 User Manual page 387

Fault code No. 39
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Fuel injector coupler
• Main wire harness-ECU coupler
• Main wire harness fuel pump cou-
pler
2 Open or short circuit in wire harness.
3 Defective fuel injector.
Fault code No. 41
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Lean angle sensor coupler
• Main wire harness-ECU coupler
2 Open or short circuit in wire harness.
3 Defective lean angle sensor
Symptom Fuel injector: open or short circuit detected.
d36 Fuel injector
Check or maintenance job
• Check the couplers for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between fuel injector coupler
• Execute the diagnostic mode.
• Replace if defective.
Symptom Lean angle sensor: open or short circuit detected.
d08 Lean angle sensor
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 lean angle sensor
• Execute the diagnostic mode.
• Replace if defective.
9-50
FUEL INJECTION SYSTEM
that may have pulled out.
the couplers.
and connect the coupler se-
curely.
open or short circuit.
and ECU coupler.
(red/black–red/black)
(red/blue–red/blue)
(Code No. d36)
Refer to "CHECKING THE IN-
JECTOR" on page 7-6.
that may have pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
coupler and ECU coupler.
(black/blue–black/blue)
(yellow/green–yellow/green)
(blue–blue)
(Code No. d08)
Refer to "CHECKING THE
LEAN ANGLE SENSOR" on
page 9-92
Reinstatement
method
Cranking the
engine. (Con-
nect the fuel in-
jector coupler.)
Reinstatement
method
Setting the
main switch to
"ON".
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