Front Heated Oxygen Sensor Heater

COMPONENT INSPECTION
Front Heated Oxygen Sensor Heater





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.