Troubleshooting - Yamaha XV1600A1999 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:
S Before troubleshooting, remove the following
part(-s):
1) rider seat
2) fuel tank
3) side covers
4) headlight lens unit
S Troubleshoot with the following special
tool(-s).
Pocket tester
90890-03112
EB802400
1. Main and ignition fuses
S Check the main and ignition fuses for conti-
nuity.
Refer to "CHECKING THE FUSES" in chap-
ter 3.
S Are the main and ignition fuses OK?
YES
ELECTRIC STARTING SYSTEM
NO
Replace the fuse(-s).
EB802401
2. Battery
S 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
S Is the battery OK?
YES
EB803400
3. Starter motor
S Connect the battery positive terminal
starter motor lead
WARNING
S 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.
S This check is likely to produce sparks,
therefore make sure that no flammable
gas or fluid is in the vicinity.
S Does the starter motor turn?
YES
7-19
ELEC
NO
S Clean the battery
terminals.
S Recharge
or re-
place the battery.
and
1
with a jumper lead
2
3
NO
Repair or replace the
starter motor.
E
.