Yamaha WR250R Service Manual page 311

Diagnos
tic
monitori Item
ng code
No.
49 Intake solenoid
50 Fuel injection system relay
51 Radiator fan motor relay
52 Headlight relay
53 EXUP servo motor
FUEL INJECTION SYSTEM
Actuation
Actuates the intake solenoid for
five times every second.
Illuminates the engine trouble
warning light.
Actuates the fuel injection sys-
tem relay for five times every
second.
Illuminates the engine trouble
warning light.
(The engine trouble warning
light is OFF when the relay is
ON, and the engine trouble
warning light is ON when the
relay is OFF).
Actuates the radiator fan motor
relay for five times every sec-
ond. (ON two seconds, OFF
three seconds)
Illuminates the engine trouble
warning light.
Actuates the headlight relay for
five times every five-second.
(ON two seconds, OFF three
seconds)
Illuminates the engine trouble
warning light five times.
Turn the servo motor once in the
open direction and then in the
close direction.
Illuminates the engine trouble
warning light.
8-40
Checking method
Check the operating sound of
the solenoid five times.
Check the operating sound of
the relay five times.
Check the operating sound of
the relay five times.
Check the operating sound of
the headlight relay five times.
Check the operating sound of
the EXUP motor.