FUEL INJECTION SYSTEM
8-50
Fault code No.
42
Symptom
A. No normal signals are received from the speed sensor.
B. Open or short circuit is detected in the neutral switch.
Diagnostic monitoring
code No.
A
07
Speed sensor
B
21
Neutral switch
Order Item/components and probable cause
Check or maintenance job
Reinstatement
method
B-1
Installed condition of neutral switch
●
Check the installed area for loose-
ness or pinching.
Turn the main
switch to “ON”.
B-2
Connected state of connector.
●
Neutral switch coupler
●
Wire harness ECU 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.
B-3
Open or short circuit in speed sensor
lead.
●
Repair or replace if there is an
open or short circuit.
●
Between relay unit coupler and
ECU coupler
(Black/Yellow
–
Black/Yellow)
●
Between neutral switch and relay
unit coupler
(Sky blue
–
Sky blue)
B-4
Defective neutral switch
●
Execute the diagnostic monitoring
mode. (Code No.21)
●
Replace if defective.
Refer to “CHECKING THE
SWITCHES” on page 8-63.
B-5
Defective shift drum (neutral detection
location)
●
Replace if defective.
Refer to “TRANSMISSION” on
page 5-64.
Содержание WR250R
Страница 1: ...SERVICE MANUAL WR250RX C 2008 32C 28197 10 WR250XX C LIT 11616 21 66 ...
Страница 2: ......
Страница 8: ......
Страница 33: ...ENGINE SPECIFICATIONS 2 8 Oil temperature 60 0 C 140 00 F Throttle cable free play 3 0 5 0 mm 0 12 0 20 in ...
Страница 39: ...ELECTRICAL SPECIFICATIONS 2 14 Spare fuse 15 0 A Spare fuse 10 0 A Spare fuse 7 5 A ...
Страница 49: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 24 ...
Страница 52: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27 ...
Страница 54: ...COOLING SYSTEM DIAGRAMS 2 29 EAS20420 COOLING SYSTEM DIAGRAMS 8 5 1 2 3 4 6 7 9 ...
Страница 56: ...CABLE ROUTING 2 31 EAS20430 CABLE ROUTING ...
Страница 58: ...CABLE ROUTING 2 33 ...
Страница 60: ...CABLE ROUTING 2 35 ...
Страница 62: ...CABLE ROUTING 2 37 ...
Страница 64: ...Front rear brake hose 2 39 Front rear brake hose ...
Страница 66: ...Throttle body 2 41 Throttle body ...
Страница 68: ...Canister for California 2 43 Canister for California 5mm 0 20 in 4 5 ...
Страница 70: ...Canister for California 2 45 ...
Страница 106: ...ELECTRICAL SYSTEM 3 34 a b a b ...
Страница 107: ...ELECTRICAL SYSTEM 3 35 ...
Страница 108: ...ELECTRICAL SYSTEM 3 36 ...
Страница 116: ...FRONT WHEEL 4 6 1 ...
Страница 223: ...OIL PUMP AND BALANCER GEAR 5 49 6 Install Be sure to bend the lock washer tab along to the nut side face 1 2 3 a ...
Страница 229: ...GENERATOR AND STARTER CLUTCH 5 55 1 2 ...
Страница 244: ...TRANSMISSION 5 70 ...
Страница 254: ...WATER PUMP 6 9 ...
Страница 258: ...FUEL TANK 7 3 1 ...
Страница 263: ...THROTTLE BODIES 7 8 ...
Страница 264: ...AIR INDUCTION SYSTEM 7 9 EAS27040 AIR INDUCTION SYSTEM 2 1 3 4 ...
Страница 265: ...AIR INDUCTION SYSTEM 7 10 1 Air filter case 2 Air induction system hose 3 Air cut off valve 4 Air induction system pipe ...
Страница 271: ......
Страница 272: ...IGNITION SYSTEM 8 1 EAS27090 IGNITION SYSTEM EAS27100 CIRCUIT DIAGRAM ...
Страница 276: ...ELECTRIC STARTING SYSTEM 8 5 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM ...
Страница 282: ...CHARGING SYSTEM 8 11 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM ...
Страница 283: ...CHARGING SYSTEM 8 12 1 AC magneto 2 Rectifier regulator 4 Battery 5 Main fuse ...
Страница 285: ...CHARGING SYSTEM 8 14 ...
Страница 286: ...LIGHTING SYSTEM 8 15 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM ...
Страница 289: ...LIGHTING SYSTEM 8 18 ...
Страница 290: ...SIGNALING SYSTEM 8 19 EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM ...
Страница 295: ...SIGNALING SYSTEM 8 24 ...
Страница 296: ...COOLING SYSTEM 8 25 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM ...
Страница 299: ...COOLING SYSTEM 8 28 ...
Страница 300: ...FUEL INJECTION SYSTEM 8 29 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM ...
Страница 326: ...FUEL PUMP SYSTEM 8 55 EAS27580 FUEL PUMP SYSTEM EAS27590 CIRCUIT DIAGRAM ...
Страница 329: ...FUEL PUMP SYSTEM 8 58 ...
Страница 330: ...ELECTRICAL COMPONENTS 8 59 EAS27971 ELECTRICAL COMPONENTS EAS32D1011 2 3 4 7 5 8 10 12 1 11 6 9 13 ...
Страница 332: ...ELECTRICAL COMPONENTS 8 61 2 3 4 9 5 10 14 13 1 6 7 11 12 15 8 ...
Страница 334: ...ELECTRICAL COMPONENTS 8 63 EAS27980 CHECKING THE SWITCHES 7 9 8 11 10 4 2 3 5 6 1 ...
Страница 358: ...TROUBLESHOOTING 9 5 ...
Страница 360: ......
Страница 361: ......
Страница 362: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...