System Description
WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
ECM FUNCTION CHART
| Sensor | Input signal to ECM | ECM function | Actuator |
|---|---|---|---|
| Camshaft position sensor (PHASE) Crankshaft position sensor (POS) |
Engine speed | Heated oxygen sensor 2 heater control | Heated oxygen sensor 2 heater |
| Engine coolant temperature sensor | Engine coolant temperature | ||
| Mass air flow sensor | Amount of intake air |
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.