Yamaha XVS13AW(C), Service Manual

Page: 376 / 422

FUEL INJECTION SYSTEM
8-54
Fault code No. 34 Symptom Malfunction detected in the primary wire of the rear cylin-
der ignition coil.
Diagnostic code No. 31, 33 Rear cylinder ignition coil
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• Rear cylinder ignition coil connector
(primary coil side)
• Wire harness ECU coupler
• 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 se-
curely.
Starting the en-
gine and oper-
ating it at idle.
2 Open or short circuit in wire harness. • Repair or replace if there is an
open or short circuit.
• Between rear cylinder ignition
coil connector and ECU cou-
pler.
(gray/red–gray/red)
• Between rear cylinder ignition
coil connector and right handle-
bar switch coupler.
(black/red–black/red)
3 Defective rear cylinder ignition coil. • Execute the diagnostic mode.
(Code No. 31)
• Check the primary and second-
ary coils for continuity.
• Replace if defective.
Refer to “CHECKING THE IG-
NITION COILS” on page 8-83.