FUEL INJECTION SYSTEM
7-55
Fault code No.
37
Symptom Engine speed is high when the engine is idling.
Diagnostic code No.
54
ISC valve
Order Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
ECU fuse is blown. (for XV19S(C)/
XV19M(C)/ XV19CTS(C)/
XV19CTM(C))
• Check the ECU fuse. (for
XV19S(C)/ XV19M(C)/
XV19CTS(C)/ XV19CTM(C))
Refer to “CHECKING THE
FUSES” on page 7-75.
ISC valve re-
turns to its orig-
inal position by
turning the
main switch to
“ON” and back
to “OFF”.
Reinstated if
the engine idle
speed is within
specification af-
ter starting the
engine.
2
Throttle valve does not fully close.
• Check the throttle bodies.
Refer to “THROTTLE BODIES”
on page 6-7.
• Check the throttle cables.
Refer to “ADJUSTING THE
THROTTLE CABLE FREE
PLAY” on page 3-8.
3
ISC valve is stuck fully open due to
disconnected ISC unit hose or cou-
pler. (High engine idle speed is de-
tected with the ISC valve stuck fully
open even though signals for the valve
to close are continuously being trans-
mitted by the ECU.)
• Check that the ISC unit hose is
not disconnected.
• Check that the ISC unit coupler
is not disconnected.
• The ISC valve is stuck fully
open if it does not operate when
the main switch is turned “OFF”.
(Touch the ISC unit with your
hand and check if it is vibrating
to confirm if the ISC valve is op-
erating.)
4
ISC valve is not moving correctly.
• Execute the diagnostic mode.
(Code No.54)
• After the ISC valve is fully
closed, it opens to the standby
opening position when the en-
gine is started. This operation
takes approximately 12 sec-
onds. Start the engine. If the er-
ror recurs, replace the throttle
body assembly.
Содержание XV19SX(C)
Страница 6: ......
Страница 8: ......
Страница 46: ...ELECTRICAL SPECIFICATIONS 2 19 Spare fuse 3 0 A...
Страница 52: ...TIGHTENING TORQUES 2 25 Cylinder head tightening sequence 3 1 2 4 A B 3 1 2 4 A Front cylinder B Rear cylinder...
Страница 63: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 36...
Страница 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 41 D D B B D D C C A A B C C B 3 2 1 3 4 6 7 6 7 5...
Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 43 A A A A 1 3 2 4...
Страница 71: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 44 1 Oil pipe 1 2 Oil pump 3 Oil strainer crankcase 4 Joint pipe...
Страница 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 45 A 1 2 3 4...
Страница 74: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 47 A A A 1 5 5 1 3 2 4 B B B B...
Страница 76: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 49 1 2...
Страница 77: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 50 1 Transfer gear oil pump 2 Middle driven shaft...
Страница 110: ...CABLE ROUTING for XV19CS C XV19C C 2 83...
Страница 113: ......
Страница 149: ...ELECTRICAL SYSTEM 3 36 A For XV19S C XV19M C XV19CTS C XV19CTM C B For XV19CS C XV19C C a b 1 A b a B 1...
Страница 150: ...ELECTRICAL SYSTEM 3 37...
Страница 179: ...FRONT WHEEL 4 26...
Страница 218: ...HANDLEBAR 4 65 Throttle cable free play 4 0 6 0 mm 0 16 0 24 in...
Страница 330: ...GENERATOR AND STARTER CLUTCH 5 81...
Страница 368: ...TRANSMISSION 5 119...
Страница 391: ......
Страница 397: ...IGNITION SYSTEM 7 6...
Страница 405: ...CHARGING SYSTEM 7 14 1 AC magneto 2 Rectifier regulator 4 Main fuse 6 Battery...
Страница 407: ...CHARGING SYSTEM 7 16...
Страница 458: ...ELECTRICAL COMPONENTS 7 67 EAS27970 ELECTRICAL COMPONENTS 13 3 6 9 10 12 4 11 14 15 5 2 1 7 8 16...
Страница 460: ...ELECTRICAL COMPONENTS 7 69 16 18 2 11 13 9 8 10 12 14 15 17 1 3 4 5 6 7...
Страница 490: ......
Страница 491: ......
Страница 492: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN...