Troubleshooting - Yamaha XV16AL Service Manual

EB808020

TROUBLESHOOTING

The fuel pump fails to operate.
Check:
1. main and ignition fuses
2. battery
3. main switch
4. engine stop switch
5. relay unit (fuel pump relay)
6. fuel pump
7. wiring
(the entire fuel pump system)
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
EAS00738
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?
YES
FUEL PUMP SYSTEM
NO
Replace the fuse(s).
7 - 48
EAS00739
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
EAS00749
3.Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
EAS00750
4.Engine stop switch
• Check the engine stop switch for conti-
nuity.
Refer to "CHECKING THE SWITCHES".
• Is the engine stop switch OK?
YES
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or
replace the battery.
NO
Replace the main
switch.
NO
Replace the right
handlebar switch.
7