Tps Isc Reset Procedure; When Opening And Closing The Throttle Grip Randomly; Tps/Isc Reset Procedure - KYMCO Downtown 350i Repair Manual

6.Fuel System
Downtown 350i

TPS ISC Reset Procedure

SAFETY FIRST: Protective gloves and eyewear are recommended at this
point.
● When opening and closing the throttle grip randomly,
the ECU may record the incorrect TPS reading when the ECU or the throttle body
has been reinstalled. It can cause hard to start
engine or idling speed is not smooth when engine installation.
● ISC has a motor inside, which controls the ISC valve to obtain a smooth idling
speed. The ECU may record the incorrect ISC position when the engine is
running because the ECU or the throttle body has been reinstalled. It can cause
engine to stop, hard to start engine or rough idling speed.
The throttle position sensor (TPS) and idle air bypass valve (ISC) have to be
reset when throttle body, MAP, TPS, ISC or ECU have been reinstalled.

TPS/ISC RESET PROCEDURE

1. Put the side stand up and engine stop switch is at "RUN".
2. Turn the key to the "OFF" position.
3. Fully open the throttle.
4. Turn the key to the "ON" position.
5. Release the throttle after waiting for eight seconds.
6. Turn the key to the "OFF" position.
7. Turn the key to the "ON" position.
8. TPS and ISC have been reset successfully.
If the procedure fails, repeat the steps from 1 to 8.
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