Troubleshooting; Starter Motor - Yamaha XV16AL Service Manual

EB803020

TROUBLESHOOTING

The starter motor fails to turn.
Check:
1. main and ignition fuses
2. battery

3. starter motor

4. relay unit (starting circuit cutoff relay)
5. relay unit (diode)
6. starter relay
7. main switch
8. engine stop switch
9. neutral switch
10.sidestand switch
11.diode
12.clutch switch
13.start switch
14.wiring
(of the entire starting system)
15.decompression solenoid
NOTE:
• Before troubleshooting, remove the fol-
lowing part(s):
1) rider seat
2) fuel tank
3) side covers
4) headlight lens unit
• Troubleshoot with the following special
tool(s).
Pocket tester
YU-03112
EB802400
7
1.Main and ignition fuses
• Check the main and ignition fuses for
continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main and ignition fuses OK?
ELECTRIC STARTING SYSTEM
NO
YES
Replace the fuse(s).
EB802401
2.Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Open-circuit voltage
12.8 V or more at 20 ˚C (68 ˚F)
• Is the battery OK?
YES
EB803400
3.Starter motor
• Connect the battery positive terminal 1
and starter motor lead 2 with a jumper
lead 3.
WARNING
WARNING
• A wire that is used as a jumper lead
must have at least the same capacity of
the battery lead, otherwise the jumper
lead may burn.
• This check is likely to produce sparks,
therefore make sure that no flammable
gas or fluid is in the vicinity.
• Does the starter motor turn?
YES
7 - 19
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or
replace the battery.
NO
Repair or replace
the starter motor.