Yamaha 2004 YP400 Service Manual page 133

CHECKING THE FUSES
2. Check:
• fuse
M MMM M MMM M
a. Connect the pocket tester to the fuse and
check the continuity.
NOTE:
_
Set the pocket tester selector to "Ω × 1".
Pocket tester
90890-03112, YU-03112-C
b. If the pocket tester indicates "∞", replace
the fuse.
L LLL L LLL L
3. Replace:
• blown fuse
M MMM M MMM M
a. Set the main switch to "OFF".
b. Install a new fuse of the correct amperage
rating.
c. Set on the switches to verify if the electrical
circuit is operational.
d. If the fuse immediately blows again, check
the electrical circuit.
Fuses
Main
Headlight
Signaling system
Ignition
Radiator fan motor
Turn signal/hazard
Fuel injection sys-
tem
Backup (storage
box light, immobi-
lizer unit, and meter
assembly)
Spare
3 - 54
CHK
ADJ
M MMM M M MMM M M MMM M
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
Amperage
rating
40 A
25 A
10 A
10 A
10 A
10 A
10 A
10 A
40 A
25 A
10 A
M MMM M MMM
L LLL L LLL
M MMM M MMM
Q'ty
1
1
1
1
1
1
1
1
1
1
1