Yamaha WR250R Service Manual page 323

Fault code No. 46
Diagnostic monitoring
code No.
Order Item/components and probable cause
1 Connected state of connector
G Wire harness ECU coupler
2 Faulty battery.
3 Malfunction of the rectifier/regulator
4 Open or short circuit in the wire harness.
Fault code No. 50
Diagnostic monitoring
code No.
Order Item/components and probable cause
1 Malfunction in ECU
Symptom Power supply to the FI system relay is not normal.
— —
Check or maintenance job
G
G
G
G
Refer
CHARGING THE BATTERY" on
page 8-68.
G
G
Repair or replace if there is an open
or short circuit.
G
(Red–Red)
G
(Brown–Brown)
G
(Red/White–Red/White)
Faulty ECU memory. (When this malfunction is detected in the
Symptom
ECU, the fault code number might not appear on the meter.)
— —
Check or maintenance job
G
8-52
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.
Replace or charge the battery.
to "CHECKING
Replace if defective.
"CHARGING SYSTEM"
Refer to
on page 8-11
.
Between battery and main switch.
Between main switch and fuse
(ignition)
Between fuse (ignition) and ECU
Replace the ECU.
Reinstatement
method
Starting the
engine and oper-
ating it at idle.
AND
Reinstatement
method
Turning the main
switch ON