Front Heated Oxygen Sensor Heater

COMPONENT INSPECTION




1. Check resistance between terminals (3) and (1).

Resistance: 3.3 - 6.3 Ohms at 25°C (77°F)

2. Check continuity between terminals (2) and (1), (3) and (2).

Continuity should not exist.

3. 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.