Pathfinder LE 4WD V6-3.3L (VG33E) (1997)
Oxygen Sensor: Testing and Inspection
Rear Heated Oxygen Sensor
Rear HO2S Heater (Left Bank)
COMPONENT INSPECTION
Check the following:
1. Check resistance between terminals (4) and (1).
Resistance: 2.3 - 4.3 Ohms at 25°C (77°F)
2. Check continuity.
Terminal No. / Continuity
(2) and (1), (3), (4) / No
(3) and (1), (2), (4) / No
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.
Rear HO2S Heater (Right Bank)
COMPONENT INSPECTION
Check the following: