Yamaha 2009 XP500Y TMAX Service Manual page 346

Fault code No. 33
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Ignition coil primary side connector
(orange)
• Wire harness ECU (engine control
unit) coupler
2 Open or short circuit in wire harness.
3 Defective ignition coil.
Fault code No. 37
Diagnostic code No.
Order Item/components and probable
cause
1 Stuck fast idle plunger detected.
2 Throttle valve does not fully close.
Symptom Malfunction detected in the primary wire of the ignition
coil.
30 Ignition coil
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 ignition coil connector
• Between ignition coil connector
• Execute the diagnostic mode.
• Replace if defective.
Symptom Engine speed is high when the engine is idling.
01 Throttle position sensor
Check or maintenance job
• Check the throttle body.
• Check the throttle body.
8-49
FUEL INJECTION SYSTEM
that may have pulled out.
the connector and coupler.
and connect the coupler se-
curely.
open or short circuit.
and ECU (engine control unit)
coupler.
(orange–orange)
and right handlebar switch cou-
pler.
(red/black–red/black)
(Code No. 30)
Refer to "CHECKING THE IG-
NITION COIL" on page 8-71.
Refer to "THROTTLE BODY" on
page 7-5.
Refer to "THROTTLE BODY" on
page 7-5.
Reinstatement
method
Starting the en-
gine and oper-
ating it at idle.
Reinstatement
method
Reinstated by
starting the en-
gine and oper-
ating it at idle
for about 5 min-
utes. Do not
turn the throttle
grip.