Troubleshooting - Yamaha YXR70FX Service Manual

EBS01048

TROUBLESHOOTING

The starter motor fails to turn.
Check:
1. main, ignition, backup and signaling system
fuses
2. battery
3. starter motor
4. starter relay
5. load control relay
6. main switch
7. brake light switch
8. gear position switch
9. wiring connections
(of the entire starting system)
TIP:
_
• Before troubleshooting, remove the following
part(s):
1. rear console
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
EBS01043
1. Main, ignition, backup and signaling sys-
tem fuses
• Check the main, ignition, backup and sig-
naling system fuses for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main, ignition, backup and signal-
ing system fuses OK?
YES
ELECTRIC STARTING SYSTEM
NO
Replace the fuse(s).
9 - 16
EBS01044
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20 °C (68 °F)
• Is the battery OK?
YES
EBS01051
3. Starter motor
• Connect the positive battery terminal 1
and starter motor lead 2 with a jumper
lead 3.
WARNING
_
• A wire that is used as a jumper lead
must have at least the same capacity or
more as that of the battery lead, other-
wise the jumper lead may burn.
• This check is likely to produce sparks,
therefore make sure nothing flammable
is in the vicinity.
• Does the starter motor turn?
YES
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or
replace the battery.
NO
Repair or replace the
starter motor.