Yamaha WR426F(N), Owner'S Service Manual

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ELEC
TPS (THROTTLE POSITION SENSOR) SYSTEM
EC69000
TPS (THROTTLE POSITION SENSOR) SYSTEM
INSPECTION STEPS
If the TPS will not operate, use the following inspection steps.
*marked: Refer to “IGNITION SYSTEM” section.
NOTE:
●
Remove the following parts before inspection.
1) Seat
2) Fuel tank
●
Use the following special tools in this inspection.
Check entire ignition
system for connection.
Repair or replace.
Check TPS. TPS coil Replace.
*Check CDI magneto. Source coil Replace.
Check CDI unit.
TPS input
voltage
Replace.
Pocket tester:
YU-3112-C/90890-03112
Inductive tachometer:
YU-08036-B
Engine tachometer:
90890-03113
No good
No good
No good
No good
OK
OK
OK