Yamaha 2007 XP500, Service Manual

Page: 368 / 450

FUEL INJECTION SYSTEM
8-53
Fault code No. 33 Symptom Malfunction detected in the primary wire of the ignition coil.
Diagnostic code No. 30 Ignition coil
Order Item/components and probable cause Check or maintenance job
Reinstatement
method
1 Connected state of connector
●
Ignition coil primary side coupler
(Orange)
●
Main wire harness ECU (engine)
coupler
●
Check the coupler for any pins
that may have pulled out.
●
Check the locking condition of
the coupler.
●
If there is a malfunction, repair it
and connect it securely.
Starting the
engine 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 ignition coil coupler
and ECU coupler
(Orange – Orange)
(Red/Black – Red/Black)
3 Defective ignition coil
●
Execute the diagnostic monitor-
ing mode. (Code No.30)
●
Replace if defective.
Refer to “ CHECKING THE IGNI-
TION COIL ” on page 8-113.
Fault code No. 37 Symptom Engine speed is high when the engine is idling.
Diagnostic monitoring
code No.
01 Throttle position sensor
Order Item/components and probable cause Check or maintenance job
Reinstatement
method
1 Stuck FID valve detected.
●
Check the throttle body.
Refer to “ THROTTLE BODIES ” on
page 7-4.
Reinstated by
starting the
engine and oper-
ating it at idle for
about 5 minutes.
Do not turn the
throttle grip.
2 Defective throttle fully closed.
●
Check the throttle body.
Refer to “ THROTTLE BODIES ” on
page 7-4.