Engine Temperature Sensor / T-Map Sensor - Sym Joyride 125 Service Manual

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5. Fuel Injection System

Engine Temperature Sensor / T-Map Sensor

ECU
Engine temperature sensor:
According to the semiconductor's characteristic, the sensor detects the temperature of engine oil
and metal parts and then sends a voltage signal to the ECU. On this base, the ECU can correct
fuel injection and ignition timing.
NTC- Negative Temperature
Coefficient Resistor
T-MAP Sensor：
Sensor combined both pressure and NTC can detect the absolute pressure and temperature in
the intake manifold, and then provides the ECU with signal for adjustment fuel injection quantity
based on environmental temperature and air pressure difference from elevation level change.
mv
140ºC
-40ºC
5-18