Troubleshooting - Yamaha XP500 2001 Service Manual

EAS00816

TROUBLESHOOTING

If the fuel pump fails to operate:
Check:
1. Main and ignition fuses
2. Battery
3. Main switch
4. Engine stop switch
5. Fuel pump relay
6. Fuel pump
7. Lean angle cut-off switch
8. Wiring connections
(the entire fuel pump system)
NOTE:
S Before troubleshooting, remove the following
part(-s):
1) Footrest board
2) Rear side cover (right)
3) Handlebar cover
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
CHAPTER 3.
S Are the main and ignition fuses OK?
YES
EAS00739
2. Battery
S Check the condition of the battery.
Refer to "CHECKING THE BATTERY" in
CHAPTER 3.
Open-circuit voltage
12.8 V or more at 20_C
S Is the battery OK?
YES
NO
Replace the fuse (-s).
NO
S Clean the battery
terminals.
S Recharge or
replace the battery.
FUEL PUMP SYSTEM
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
EAS00759
5. Fuel pump relay
S Disconnect the fuel pump relay coupler
from the wireharness.
S Connect the pocket tester (Ω
tery (12 V) to the fuel pump relay coupler as
shown.
Battery positive terminal ! red/black
Battery negative terminal ! blue/red
Tester positive probe ! red/black
Tester negative probe ! blue/black
S Does the fuel pump relay have continuity
between red/black and blue/black?
YES
8-52
ELEC
NO
Replace the main
switch.
NO
Replace the right
handlebar switch.
1) and bat-
1
2
3
4
NO
Replace the fuel
pump relay.