Yamaha 2009 XP500Y TMAX, Service Manual

Page: 346 / 386

FUEL INJECTION SYSTEM
8-49
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 Connections
• Ignition coil primary side connector
(orange)
• Wire harness ECU (engine control
unit) coupler
• Check the coupler for any pins
that may have 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 ignition coil connector
and ECU (engine control unit)
coupler.
(orange–orange)
• Between ignition coil connector
and right handlebar switch cou-
pler.
(red/black–red/black)
3 Defective ignition coil. • Execute the diagnostic mode.
(Code No. 30)
• Replace if defective.
Refer to “CHECKING THE IG-
NITION COIL” on page 8-71.
Fault code No. 37 Symptom Engine speed is high when the engine is idling.
Diagnostic code No. 01 Throttle position sensor
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Stuck fast idle plunger detected. • Check the throttle body.
Refer to “THROTTLE BODY” on
page 7-5.
Reinstated by
starting the en-
gine and oper-
ating it at idle
for about 5 min-
utes. Do not
turn the throttle
grip.
2 Throttle valve does not fully close. • Check the throttle body.
Refer to “THROTTLE BODY” on
page 7-5.