Aeon 350cc, Service Manual

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ELECTRONIC FUEL INJECTION
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1. Disconnect the vehicle harness from the TPS.
2. Plug the TPS tester into the TPS harness.
3. Connect the red voltmeter test probe in black/white port (A)
and black voltmeter test probe in the blue port (C) and set the
meter to read VDC.
4. The volt value reading should be around 5V.
5. Connect the red voltmeter test probe in red/green port and
black voltmeter test probe in the blue port (C) and set the
meter to read VDC.
6. Move the throttle open and closed slowly while reading the
display. The voltage should increase and decrease smoothly
with no “jumps” when the throttle is applied.
7. The volt value should be 0.15V~1.15V at idle throttle
position.
8. The volt value should be 3.9V~4.9V at full throttle position.
9. If the sensor did not function correctly, replace it.
TPS REPLACEMENT
NOTE: The correct position of the TPS is established
and set at the factory.
1. Disconnect TPS harness from throttle body
2. Remove screw from throttle body.
3. Carefully pull out TPS from throttle body.
4. Replace the TPS sensor.
ECT OPERATION OVERVIEW
Mounted on the cylinder head, the engine temperature sensor
measures coolant temperature. The engine temperature sensor
is a Negative Temperature Coefficient (NTC) type sensor, as
the temperature increases the resistance decreases.
IGNITION COIL