Yamaha FZ1-N Service Manual page 373

Diag-
nostic
code
No.
Injector #3
38
Injector #4
39
Air induction system sole-
noid
48
Fuel injection system relay
50
Radiator fan motor relay
51
Headlight relay
52
Exup servo motor
53
Item
Actuates the injector #3 five
times at one-second inter-
vals.
Illuminates the engine trou-
ble warning light.
Actuates the injector #4 five
times at one-second inter-
vals.
Illuminates the engine trou-
ble warning light.
Actuates the Air induction
system solenoid five times at
one-second intervals.
Illuminates the engine trou-
ble warning light.
Actuates the fuel injection
system relay five times at
one-second intervals.
Illuminates the engine trou-
ble 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 five times at one-
second intervals. (ON 2 sec-
onds, OFF 3 seconds)
Illuminates the engine trou-
ble warning light.
Actuates the headlight relay
for five times every five-sec-
ond. (ON 2 seconds, OFF 3
seconds)
Illuminates the engine trou-
ble warning light.
Actuate the servo motor turns
to close side and to open
side.
Illuminates the engine trou-
ble warning light only while
the motor is runnning.
FUEL INJECTION SYSTEM
Actuation
8-49
Checking method
Check the operating sound
of the injector #3 five times.
Check the operating sound
of the injector #4 five times.
Check the operating sound
of the Air induction system
solenoid five times.
Check the operating sound
of the fuel injection system
relay five times.
Check the operating sound
of the Radiator fan motor
relay five times.
Check the operating sound
of the headlight relay five
times.
Check the operating sound
of the EXUP servo motor.