Input/Output Signal Chart
WARNING: This page is about a different car, the 2016 Infiniti QX80. However, it is still accessible from the selected car via links, so may be relevant.
| Sensor | Input signal to ECM | ECM function | Actuator |
|---|---|---|---|
| Crankshaft position sensor Camshaft position sensor |
Engine speed * 2 | Air conditioner cut control | IPDM E/R ↓ A/C relay ↓ Compressor |
| Engine coolant temperature sensor 1 | Engine coolant temperature | ||
| Accelerator pedal position sensor | Accelerator pedal position | ||
| Battery | Battery voltage * 2 | ||
| Refrigerant pressure sensor | Refrigerant pressure | ||
| Power steering pressure sensor | Power steering operation | ||
| A/C auto amp. | A/C ON signal*1 | ||
| A/C evaporator temperature*1 | |||
| Target A/C evaporator temperature*1 | |||
| Blower fan ON signal | |||
| Combination meter | Vehicle speed*1 |
*1: This signal is sent to the ECM via the CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.