Yamaha PZ50W Service Manual page 272

Diagnostic
Item
code No.
Cylinder-#1 ignition coil
30
Cylinder-#2 ignition coil
31
Injector #1
36
Injector #2
37
Fuel injection system relay
50
Radiator fan motor relay
51
FUEL INJECTION SYSTEM
Description of action
Actuates the cylinder-#1 ignition coil five times at 1-sec-
ond intervals and displays the self-diagnosis warning
indicator 1 second after the grip warmer side of the grip/
thumb warmer adjustment switch is pushed.
Connect an ignition checker.
This operation is performed each time the grip warmer
side of the switch is pushed. However, if the grip warmer
side of the switch is pushed again while the operation is
being performed, the operation will stop immediately and
restart from the beginning.
Actuates the cylinder-#2 ignition coil five times at 1-sec-
ond intervals and displays the self-diagnosis warning
indicator 1 second after the grip warmer side of the grip/
thumb warmer adjustment switch is pushed.
Connect an ignition checker.
This operation is performed each time the grip warmer
side of the switch is pushed. However, if the grip warmer
side of the switch is pushed again while the operation is
being performed, the operation will stop immediately and
restart from the beginning.
Actuates injector #1 five times at 1-second intervals and
displays the self-diagnosis warning indicator 1 second
after the grip warmer side of the grip/thumb warmer
adjustment switch is pushed.
This operation is performed each time the grip warmer
side of the switch is pushed. However, if the grip warmer
side of the switch is pushed again while the operation is
being performed, the operation will stop immediately and
restart from the beginning.
Actuates injector #2 five times at 1-second intervals and
displays the self-diagnosis warning indicator 1 second
after the grip warmer side of the grip/thumb warmer
adjustment switch is pushed.
This operation is performed each time the grip warmer
side of the switch is pushed. However, if the grip warmer
side of the switch is pushed again while the operation is
being performed, the operation will stop immediately and
restart from the beginning.
Actuates the fuel injection system relay five times at 1-
second intervals and displays the self-diagnosis warning
indicator 1 second after the grip warmer side of the grip/
thumb warmer adjustment switch is pushed. (The indica-
tor is off when the relay is on and it is on when the relay
is off.)
This operation is performed each time the grip warmer
side of the switch is pushed. However, if the grip warmer
side of the switch is pushed again while the operation is
being performed, the operation will stop immediately and
restart from the beginning.
Actuates the radiator fan motor relay for five cycles of 5
seconds and displays the self-diagnosis warning indica-
tor 1 second after the grip warmer side of the grip/thumb
warmer adjustment switch is pushed. (The relay is on for
2 seconds and off for 3 seconds.)
This operation is performed each time the grip warmer
side of the switch is pushed. However, if the grip warmer
side of the switch is pushed again while the operation is
being performed, the operation will stop immediately and
restart from the beginning.
7-12
FI
Data displayed on meter
(reference value)
After pushing the switch, check
the spark five times.
After pushing the switch, check
the spark five times.
After pushing the switch, check
the operating sound of the
injector five times.
After pushing the switch, check
the operating sound of the
injector five times.
After pushing the switch, check
the operating sound of the fuel
injection system relay five
times.
After pushing the switch, check
the operating sound of the radi-
ator fan motor relay five times.
(At that time, the fan motor
rotates.