Yamaha R15 2022 Service Manual page 475

EAS30551
CHECKING THE FUSES
The following procedure applies to all of the fus-
es.
ECA20520
To avoid a short circuit, always turn the main
switch to "OFF" when checking or replacing
a fuse.
1. Remove:
• Passenger seat
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
2. Check:
• Fuse
a. Connect the multimeter to the fuse and
check the continuity.
TIP
Set the multimeter selector to "Ω × 1".
Multimeter
INS-003
(90890-03189)
b. If the multimeter indicates "∞", replace the
fuse.
3. Replace:
• Blown fuse
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 electri-
cal circuit is operational.
d. If the fuse immediately blows again, check
the electrical circuit.
Fuses
Main
Accessories fuse
ABS solenoid
ABS motor
ABS control unit
Spare
Spare
Spare
ELECTRICAL COMPONENTS
Amperage
Q'ty
rating
15 A 1
2 A 1
15 A 1
30 A 1
2 A 1
30 A 1
15 A 1
2 A 1
8-142
EWA13310
WARNING
Never use a fuse with an amperage rating
other than that specified. Improvising or us-
ing a fuse with the wrong amperage rating
may cause extensive damage to the electri-
cal system, cause the lighting and ignition
systems to malfunction and could possibly
cause a fire.
4. Install:
• Passenger seat
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
EAS31005
REPLACING THE ECU (engine control unit)
1. Turn the main switch to "OFF".
2. Replace the ECU (engine control unit).
Refer to "REMOVING THE ECU (engine con-
trol unit)" on page 8-142.
Refer to "INSTALLING THE ECU (engine
control unit)" on page 8-143.
3. Check:
• Engine idling speed
Start the engine, warm it up, and then mea-
sure the engine idling speed.
Engine idling speed
1300–1500 r/min
EAS31319
REMOVING THE ECU (engine control unit)
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
2. Disconnect:
• ECU coupler "1"
TIP
Push the lock lever "a" of the ECU coupler in the
direction of the arrow shown, and then discon-
nect the coupler by puling it backward.
1
ELEC – +
a