Troubleshooting - Yamaha YZF-R6 99 Service Manual

Motorcycle yzf-r6 99 5eb-ae1
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EB808020

TROUBLESHOOTING

The fuel pump fails to operate.
Check:
1. main and ignition fuses
2. battery
3. main switch
4. engine stop switch
5. starting circuit cutoff 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) air filter case
4) front cowling inner panel (left)
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
NO
Replace the fuse(-s).
FUEL PUMP SYSTEM
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
EB802411
3. Main switch
S Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the main switch OK?
YES
EB802412
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
8-51
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.

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1999 yzf-r6

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