Circuit Operation
- 5 volts are applied to the fuel temperature sensor output terminal (terminal 3) from the ECM (terminal 77 - M/T) or PCM (terminal 51 - A/T) via the resistor in the ECM (M/T) or PCM (A/T).
- The fuel temperature sensor output voltage increases when the resistance increases and decreases when the resistance decreases. The ground terminal (terminal 1) is grounded to the vehicle body.