Troubleshooting Details - Yamaha WR250R Service Manual
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Also See for WR250R:
- Owner's manual (100 pages) ,
- Owner's manual (112 pages) ,
- Owner's manual (96 pages)
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EAS27480
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the meter. Carry out check
and maintenance on items or components that could be a cause of malfunction in accordance with the
order.
When the check and maintenance of malfunctioned part is completed, restore the meter display ac-
cording to the "Reinstatement method".
Fault code No.:
Fault code number displayed on the meter when the engine failed to work normally. Refer to "DIAG-
NOSTIC MODE" on page 8-34.
Diagnostic monitoring code No.:
Code number to be used when the diagnostic monitoring mode is operated. Refer to "DIAGNOSTIC
MODE" on page 8-34.
Fault code No.
12
Diagnostic monitoring
code No.
Order Item/components and probable cause
1
Installed condition of crankshaft position
sensor
2
Connected state of connector
Crankshaft position sensor coupler
G
Main wire harness ECU coupler
G
3
Open or short circuit in wire harness.
4
Defective crankshaft position sensor.
No normal signals are received from the crankshaft position
Symptom
sensor.
—
—
Check or maintenance job
Check the installed area for loose-
ness or pinching.
G
G
G
G
G
(Green/White
(Black/Blue
G
Refer
CRANKSHAFT POSITION SEN-
SOR" on page 8-75.
8-41
FUEL INJECTION SYSTEM
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.
Repair or replace if there is an
open or short circuit.
Between the crankshaft position
sensor coupler and ECU coupler.
–
Green/White)
–
Black/Blue)
Replace if defective.
to
"CHECKING
Reinstatement
method
Cranking the
engine.
THE
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