TOHATSU MFS25 Service Manual page 96

Fuel System (Fuel Injection)
5. Throttle Position Sensor (TPS)
Throttle position sensor is located on the top of throttle body,
and is connected to throttle shaft. Throttle position sensor
sends throttle open/close information to ECU.
6. Oil Pressure Switch
Oil pressure switch is located on the port side of ending, and
is projected into oil passage to which pressure between
crank shaft and cam shaft from oil pump is applied. Oil
pressure switch sends oil pressure low signal to ECU.
ECU operates low speed ESG, warning buzzer and lamp
based on this information.
4-14 25/30 2006