Yamaha XT660 2004, Service Manual

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7 - 17
FI
FUEL INJECTION SYSTEM
Fault code No. 30 Symptom The motorcycle has overturned.
Used diagnostic code No. 08 (lean angle cut-off switch)
Order Item/components Check or maintenance job Restore method
1 The motorcycle has overturned. Raise the motorcycle upright. Reinstated by set-
ting the main switch
to “ON” (the engine
cannot be started
unless the main
switch is first set to
“OFF”).
2 Lean angle cut-off switch installa-
tion Check the switch for looseness or pinching.
3 Coupler connections
Lean angle cut-off switch coupler
ECU coupler
Check the coupler for any pins that may have
pulled out.
Check that the couplers are securely locked.
If necessary, repair the coupler or securely con-
nect it.
4 Defective lean angle cut-off switch Execute the diagnostic mode. (Code No. 08)
Replace the switch if it is defective.
Refer to “IGNITION SYSTEM” in chapter 8.
Fault code No. 33 Symptom Malfunction detected in the primary lead of the ignition coil.
Used diagnostic code No. 30 (ignition coil)
Order Item/components Check or maintenance job Restore method
1 Coupler and connector connections
Ignition coil primary connector
(Orange)
ECU coupler
Check the coupler and connector for any pins
that may have pulled out.
Check the connector and coupler are securely
locked.
If necessary, repair the coupler or securely con-
nect it.
Reinstated by start-
ing the engine and
operating it at idle.
2 Open or short circuit in the wire har-
ness Repair or replace if there is an open or short cir-
cuit between the wire harnesses.
Orange - Orange
3 Defective ignition coil Execute the diagnostic mode. (Code No. 30)
Test the primary and secondary coils for continu-
ity.
Replace the coil if it is defective.
Refer to “IGNITION SYSTEM” in chapter 8.
Fault code No. 41 Symptom Open or short circuit is detected in the lean angle cut-off switch.
Used diagnostic code No. 08 (lean angle cut-off switch)
Order Item/components Check or maintenance job Restore method
1 Coupler connections
Lean angle cut-off switch coupler
ECU coupler
Check the couplers for any pins that may have
pulled out.
Check that the couplers are securely locked.
If necessary, repair the coupler or securely con-
nect it.
Reinstated immedi-
ately when it
becomes normal.
2 Open or short circuit in the wire har-
ness Repair or replace if there is an open or short cir-
cuit between the wire harnesses.
Black/Blue - Black/Blue
Yellow/Green - Yellow/Green
Blue - Blue
3 Defective lean angle cut-off switch Execute the diagnostic mode. (Code No. 08)
Replace the switch if it is defective.
Refer to “Fault code No. 30”.