Troubleshooting - Yamaha XVZ13TF 1999 Service Manual

EAS00835

TROUBLESHOOTING

The tachometer starts to display the self-
diagnosis sequence.
Check:
1. throttle position sensor
2. speed sensor
3. emergency stop switch
NOTE:
S Before troubleshooting, remove the following
part(-s):
1) rider seat
2) fuel tank
3) air filter case
S Troubleshoot with the following special
tool(-s).
Pocket tester
90890-03112
EAS00836
1. Throttle position sensor
CIRCUIT DIAGRAM
Ignitor unit
13
Throttle position sensor
29
SELF-DIAGNOSIS
1. Wire harness
S Check the wire harness for continuity.
Refer to "CIRCUIT DIAGRAM".
S Is the wire harness OK?
YES
EB812401
2. Throttle position sensor
S Check the throttle position sensor for conti-
nuity.
Refer to "CHECKING AND ADJUSTING
THE THROTTLE POSITION SENSOR" in
chapter 6.
S Is the throttle position sensor OK?
YES
Replace the ignitor
unit.
8-77
ELEC
NO
Repair or replace the
wire harness.
NO
Replace the throttle
position sensor.