FUEL INJECTION SYSTEM
8-37
2
Connection of wire harness
ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler, and
check the pins (bent or broken
terminals and locking condition
of the pins).
Improperly connected
Con-
nect the coupler securely, or
repair/replace the wire harness.
Press the start switch and the
engine stop switch alternately to
switch the power supply (= main
relay) from “ON
OFF
ON”.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recovered”
Go
to item 6 and finish the service.
Condition is “Detected”
Go to
item 3.
3
Wire harness continuity.
Open or short circuit
Replace
the wire harness.
Between battery terminal and
main relay.
red–red
red–red/white
Between main relay coupler and
ECU coupler.
brown–brown
blue/red–blue/red
Press the start switch and the
engine stop switch alternately to
switch the power supply (= main
relay) from “ON
OFF
ON”.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recovered”
Go
to item 6 and finish the service.
Condition is “Detected”
Go to
item 4.
4
Defective main relay.
No operating sound
Replace
the main relay.
Or execute the diagnostic mode.
(Code No. 09)
Fuel system voltage is below 3
V
Replace the main relay.
Press the start switch and the
engine stop switch alternately to
switch the power supply (= main
relay) from “ON
OFF
ON”.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recovered”
Go
to item 6 and finish the service.
Condition is “Detected”
Go to
item 5.
5
Malfunction in ECU.
Replace the ECU.
Service is finished.
6
Delete the fault code.
Confirm that the fault code has
a condition of “Recovered”
using the Yamaha diagnostic
tool, and then delete the fault
code.
Fault code No.
43
Item
Fuel system voltage: incorrect voltage supplied to the main relay
and CCU.
Содержание YZ250FX 2021
Страница 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY ...
Страница 10: ......
Страница 61: ...TIGHTENING TORQUES 2 16 ...
Страница 62: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view ...
Страница 64: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view ...
Страница 66: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view ...
Страница 68: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view ...
Страница 70: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view ...
Страница 72: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view ...
Страница 74: ...CABLE ROUTING DIAGRAM 2 29 ...
Страница 112: ...ELECTRICAL SYSTEM 3 36 ...
Страница 153: ...HANDLEBAR 4 39 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in ...
Страница 166: ...FRONT FORK 4 52 1 ...
Страница 184: ...CHAIN DRIVE 4 70 ...
Страница 189: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Oil filter element 2 Oil pump ...
Страница 190: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Intake camshaft 2 Exhaust camshaft ...
Страница 191: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 5 1 Camshaft 2 Oil pressure check bolt 3 Oil pump 4 Oil filter element ...
Страница 245: ...SHIFT SHAFT 5 59 TIP Align the punch mark a on the shift shaft with the punch mark b in the shift pedal 1 1 2 2 a b ...
Страница 251: ...OIL PUMP 5 65 A Primary drive gear side B Crankcase cover side 5 7 mm 0 02 0 28 in 5 c d 6 8 b 8 6 7 E ...
Страница 264: ...TRANSMISSION 5 78 ...
Страница 274: ...WATER PUMP 6 9 ...
Страница 284: ...THROTTLE BODY 7 9 ...
Страница 287: ......
Страница 288: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM ...
Страница 292: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM ...
Страница 296: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM ...
Страница 299: ...CHARGING SYSTEM 8 12 ...
Страница 300: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM ...
Страница 304: ...FUEL INJECTION SYSTEM 8 17 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM ...
Страница 329: ...FUEL INJECTION SYSTEM 8 42 ...
Страница 330: ...FUEL PUMP SYSTEM 8 43 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM ...
Страница 362: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15 ...
Страница 372: ...CHASSIS 10 9 ...
Страница 374: ......
Страница 376: ......
Страница 377: ...YZ250FXM 2021 WIRING DIAGRAM BAJ 2819U 11_WD indd 1 2020 06 29 15 46 05 ...
Страница 378: ...YZ250FXM 2021 WIRING DIAGRAM BAJ 2819U 11_WD indd 2 2020 06 29 15 46 06 ...