Troubleshooting - Yamaha XV1600A1999 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:
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
EAS00738
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
FUEL PUMP SYSTEM
NO
Replace the fuse(-s).
EAS00739
2. Battery
S 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
S Is the battery OK?
YES
EAS00749
3. Main switch
S Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the main switch OK?
YES
EAS00750
4. Engine stop switch
S Check the engine stop switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the engine stop switch OK?
YES
7-47
ELEC
NO
S Clean the battery
terminals.
S Recharge
or re-
place the battery.
NO
Replace the main
switch.
NO
Replace the right
handlebar switch.
E