KYMCO AK 550 Service Manual page 224

6.Fuel System
AK 550
TPS Inspection
Unplug the TPS sensor connector.
Measure if the ECU voltage outputs to TPS between the following terminals of
the TPS connector.
Terminal Normal
Violet/Red (+) – Green/Pink (-) 5 V
Throttle Position Sensor (TPS)
3000 - 7000 Ω
resistance (at 20°C/68°F)
When installation, apply oil onto a new O-ring. Install the TPS onto the throttle
body, being careful not to damage the O-ring. Install and tighten the screw
securely.
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