Yamaha TDM850 1996 Service Manual page 321

TPS (THROTTLE POSITION SENSOR) SELF DIAGNOSIS
TROUBLESHOOTING
IF THE TACHOMETER'S TPS (THROTTLE POSITION SENSOR) SELF-DIAGNOSIS OPERATES.
Procedure
Check:
1. TPS (throttle position sensor)
2. Wire harness
NOTE:
Use the following special tool(s) in this trouble-
shooting.
1. TPS (throttle position sensor)
S Disconnect the throttle position sensor coupler
from the wire harness.
S Connect the pocket tester (Ω
throttle position sensor.
Refer to "TPS (THROTTLE POSITION SEN-
SOR) ADJUSTMENT AND INSPECTION" in
CHAPTER 6.
S Check the TPS (throttle position sensor) for
continuity.
2. Wire harness
S Check the wire harness for continuity.
Refer to "CIRCUIT DIAGRAM".
Replace the ignitor unit.
1) to the
GOOD
CONDITION
CONTINUITY
Pocket tester:
90890-03112
BAD CONDITION
Replace TPS (throttle position sensor).
NO CONTINUITY
Repair or replace wire harness.
8-45
ELEC