Troubleshooting - Yamaha YFM7FGPW Service Manual

EBS01095

TROUBLESHOOTING

The four-wheel-drive motor indicator
light fails to come on.
Check:
1. main and four-wheel-drive motor fuses
2. battery
3. main switch
4. four-wheel-drive motor relay 1
5. four-wheel-drive motor relay 2
6. four-wheel-drive motor relay 3
7. on-command four-wheel-drive motor switch
and differential gear lock switch
8. differential gear motor
9. wiring connection
(the entire 2WD/4WD selecting system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. battery cover
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
2WD/4WD SELECTING SYSTEM
EBS01043
1. Main and four-wheel-drive motor fuses
• Check the main and four-wheel-drive
• Are the main and four-wheel-drive motor
EBS01044
2. Battery
• Check the condition of the battery.
• Is the battery OK?
EBS01041
3. Main switch
• Check the main switch for continuity.
• Is the main switch OK?
9 - 54
motor fuses for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
fuses OK?
YES
Replace the fuse(s).
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20 °C (68 °F)
YES
• Clean the battery
terminals.
• Recharge
place the battery.
Refer to "CHECKING THE SWITCHES".
YES
Replace
switch.
– +
ELEC
NO
NO
or re-
NO
the main