Altima SE L4-2.4L (KA24DE) (1997)
Oxygen Sensor: Testing and Inspection
Rear Heated Oxygen Sensor
COMPONENT INSPECTION
Rear heated oxygen sensor heater Check the following.
1. Check resistance between terminals (1) and (4).
Resistance: 2.3 - 4.3 ohms at 25°C (77°F)
2. Check continuity.
If NG, replace the rear heated oxygen sensor.
CAUTION: Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a
concrete floor; use a new one.