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Component Inspection

FRONT HEATED OXYGEN SENSOR HEATER
Check resistance between terminals (a) and (c).

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

Check continuity between terminals (b) and (c), (a) and (b).

Continuity should not exist.

If NG, replace 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.