Yamaha YFM7FGPW Service Manual page 292

Fault code No. 33
Diagnostic code No. D30
Order Item/components and probable
cause
1 Connections
• Ignition coil connector (primary
coil side)
• Main wire harness-ECU coupler
2 Open or short circuit in wire har-
ness.
3 Defective ignition coil.
FUEL INJECTION SYSTEM
Symptom Malfunction detected in the primary lead of the ignition
coil.
Ignition coil
Check or maintenance job
• Check the connector and cou-
pler for any pins that may be
pulled out.
• Check the locking condition of
the connector and coupler.
• If there is a malfunction, repair it
and connect the coupler or con-
nector securely.
• Repair or replace if there is an
open or short circuit.
• Between ignition coil connector
and ECU coupler.
(orange–orange)
• Between ignition coil connector
and left handlebar switch cou-
pler.
(red/black–red/black)
• Execute the diagnostic mode.
(Code No.D30)
• Test the primary and secondary
coils for continuity.
• Replace if defective.
Refer to "IGNITION SYSTEM" in
chapter 9.
6 - 20
FI
Reinstatement
method
Starting the
engine and
operating it at
idle.