Throttle Position Sensor (Tps) - Yamaha F100A Service Manual

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ELEC
IGNITION CONTROL SYSTEM
O P
R

THROTTLE POSITION SENSOR (TPS)

1. Check:
TPS input voltage (at idling speed)
Out of specification → Check the CDI
unit.
TPS input voltage (R – O):
5 ± 0.25 V
2. Check:
TPS output voltage (at idle speed)
Out of specification → Adjust the TPS
position.
Output voltage (P – O):
0.7 ± 0.02 V
Checking steps:
Connect the test harness.
Connect the tester leads to the test
harness (P – O).
Start the engine, allow it to warm up
for several minutes.
Measure the voltage at engine idling
speed.
While slowly opening and closing the
throttle valves, check if the voltage
changes gradually.
NOTE:
Set the digital tester to the manual range. In
the auto range the voltage changes cannot
be accurately measured.
3. Adjust:
TPS position
Adjustment steps:
Start the engine at idling speed.
Move the throttle control lever until it
contacts the fully-closed stopper. Refer
to "Carburetor pickup timing check
and adjustment" in chapter 3.
Loosen the screws.
Adjust the position of the TPS until the
specified voltage is obtained.
Tighten the bolts.
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