Heated Oxygen Sensor 2 Heater
SYSTEM DESCRIPTION
| 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.
OPERATION
| Engine speed | Heated oxygen sensor 2 heater |
|---|---|
| Above 3, 600 RPM | OFF |
Below 3, 600 RPM after the following conditions are met.
|
ON |