Input/Output Signal Chart
| Sensor | Input signal to ECM | ECM function | Actuator |
|---|---|---|---|
| Crankshaft position sensor | Engine speed * 2 | Fuel injection & mixture ratio control | Fuel injector |
| Camshaft position sensor | Camshaft position | ||
| Mass air flow sensor | Amount of intake air | ||
| Intake air temperature sensor | Intake air temperature | ||
| Engine coolant temperature sensor 1 | Engine coolant temperature | ||
| Air fuel ratio (A/F) sensor 1 | Density of oxygen in exhaust gas | ||
| Fuel rail pressure sensor | Fuel rail pressure | ||
| Throttle position sensor | Throttle position | ||
| Accelerator pedal position sensor | Accelerator pedal position | ||
| TCM | Gear position | ||
| Battery | Battery voltage * 2 | ||
| Knock sensor | Engine knocking condition | ||
| Power steering pressure sensor | Power steering operation | ||
| Heated oxygen sensor 2*1 | Density of oxygen in exhaust gas | ||
| ABS actuator and electric unit (control unit) | VDC/TCS operation command | ||
| A/C auto amp. | A/C ON signal | ||
| Combination meter | Vehicle speed |
*1: This sensor is not used to control the engine system under normal conditions.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.