Pathfinder XE 2WD V6-3.3L (VG33E) (1997)
Oxygen Sensor: Testing and Inspection
Front Heated Oxygen Sensor
Front HO2S Heater (Left Bank)
COMPONENT INSPECTION
Check resistance between terminals (3) and (1)
Resistance: 2.3 - 4.3 Ohm at 25°C (77°F)
Check continuity between terminals (2) and (1), (3) and (2) Continuity should not exist.
If NG, replace the front 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.
Front HO2S Heater (Right Bank)
COMPONENT INSPECTION
Check resistance between terminals (3) and (1).
Resistance: 2.3 - 4.3 Ohms at 25°C (77°F)
Check continuity between terminals (2) and (1), (3) and (2)
Continuity should not exist.
If NG, replace the front 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.