## ELECTRONIC ENGINE CONTROLS

### General Information

The Electronic Fuel Injection (EFI) system precisely controls fuel injection to match engine requirements. This in turn reduces emissions and increases driveability. The ECM receives input from various sensors to determine engine operating conditions. These sensors provide the input to the control unit which determines the amount of fuel to be injected as well as other variables such as idle speed. These inputs and their corresponding sensors include:

- Intake air temperature — Intake Air Temperature Sensor
- Coolant temperature — Water Temperature Sensor
- Engine speed — Pulse signal from the distributor
- Throttle valve opening — Throttle Position Sensor
- Exhaust oxygen content — Oxygen Sensor