Checking The Relays - Yamaha YZ 2023 Series Owner's Service Manual

Lithium battery charger
90890-05376
Lithium battery charger
DBY-ACC51-70-02
TIP
• For instructions on charging and handling the
battery charger, refer to the battery charger's
instruction manual.
• Once battery charging starts, the sleep mode
is canceled.
5. Charge the battery until it is fully charged.
6. Install:
• Battery
7. Connect:
• Battery lead
(to the battery terminals)
ECA26980
NOTICE
First, connect the positive battery lead, and
then the negative battery lead.
8. Check:
• Battery terminal
Dirt  Clean with a wire brush.
Loose connection  Connect properly.
9. Lubricate:
• Battery terminal
Recommended lubricant
Dielectric grease
10.Install:
• Seat
• Side cover (left/right)
Refer to "GENERAL CHASSIS" on page 4-1.
Checking the battery
ECA26080
NOTICE
The battery has a limited service life. If the
battery cannot be charged or it is determined
that the battery cannot be used after check-
ing the battery, it should be replaced. When
replacing the battery, be sure to use a
Yamaha genuine lithium-ion battery.
TIP
Do not check the battery at high temperature of
65 C (149 F) or more or low temperatures be-
low 10 C (50 F). Otherwise, the control feature
preventing battery charging and discharging will
temporarily intervene.
1. Check:
• Battery
ELECTRICAL COMPONENTS
a. If the battery is hot, wait until the battery
has cooled down to the ambient tempera-
ture.
b. Measure the voltage between the battery
terminals.
13.25 V or more  The battery is normal.
Checking is finished.
Less than 13.25 V  Go to step (c).
c. Connect the battery charger (special tool)
to the battery and charge it.
Lithium battery charger
90890-05376
Lithium battery charger
DBY-ACC51-70-02
TIP
For instructions on charging and handling the
battery charger, refer to the battery charger's in-
struction manual.
d. If the battery is hot, wait until the battery
has cooled down to the ambient tempera-
ture.
e. Measure the voltage between the battery
terminals.
13.25 V or more  The battery is normal.
Checking is finished.
10 V or more and less than 13.25 V 
Perform from step (c) again.
Less than 10 V  Replace the battery.
TIP
Before replacing the battery, make sure that the
battery temperature is proper (temperature not
more than 65 C (149 F) or less than 0 C (32
F)). Otherwise, wait until the battery tempera-
ture is proper and perform the procedure from
step (c) again.
EAM30292

CHECKING THE RELAYS

Check each switch for continuity with the digital
circuit tester. If the continuity reading is incor-
rect, replace the relay.
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
1. Disconnect the relay from the wire harness.
2. Connect the digital circuit tester () and bat-
tery (12 V) to the relay terminal as shown.
Check the relay operation.
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