Yamaha XV16AL Service Manual page 435

EB812010
TROUBLESHOOTING
The engine trouble indicator light or the
fuel level indicator light starts to blink,
display the self-diagnosis sequence.
Check:
1. throttle position sensor
2. speed sensor
3. decompression solenoid
4. fuel level meter
NOTE:
• Before troubleshooting, remove the fol-
lowing part(s):
1) rider seat
2) fuel tank
3) left side cover
• Troubleshoot with the following special
tool(s).
Pocket tester
YU-03112
EB812020
1. Throttle position sensor
CIRCUIT DIAGRAM
7
A Throttle position sensor
B Ignitor unit
SELF-DIAGNOSIS
EAS00843
1.Wire harness
• Check the wire harness for continuity.
Refer to "CIRCUIT DIAGRAM".
• Is the wire harness OK?
YES
EB812401
2.Throttle position sensor
• Check the throttle position sensor for
continuity.
Refer to "CHECKING AND ADJUSTING
THE THROTTLE POSITION SENSOR" in
chapter 6.
• Is the throttle position sensor OK?
YES
Replace the ignitor
unit.
7 - 57
– +
ELEC
NO
Repair or replace
the wire harness.
NO
Replace the throt-
tle position sensor.