Input/Output Signal Chart: Notes
INPUT/OUTPUT SIGNAL CHART
| Sensor | Input signal to ECM | ECM function | Actuator | ||||
|---|---|---|---|---|---|---|---|
| Crankshaft position sensor (POS) Camshaft position sensor (PHASE) |
Engine speed(1) | Cooling fan control | IPDM E/R ↓ Cooling fan relay ↓ Cooling fan motor |
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| Battery | Battery voltage(1) | ||||||
| Combination meter | Vehicle speed(2) | ||||||
| Engine coolant temperature sensor | Engine coolant temperature | ||||||
| BCM | Air conditioner ON signal(2) | ||||||
| Refrigerant pressure sensor | Refrigerant pressure | ||||||
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SYSTEM DESCRIPTION
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF].