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Home >> Toyota >> 1988 >> 4Runner Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Computer Control System >> Component Testing >> Oxygen (O2) Sensor Heater

Oxygen (O2) Sensor Heater

Disconnect sensor connector. Using ohmmeter, measure resistance between sensor terminals. Replace sensor if resistance is not within 5-6 ohms at 68°F (20°C).

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