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Oxygen Sensor: Testing and Inspection
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS.
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Disconnect the heated oxygen sensor connectors.
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Using an ohmmeter, measure the resistance between terminals +B and HT.
Resistance: At 20°C (68°F):
Bank 1, Sensor 1: 5 - 7 Ohms
Bank 1, Sensor 2: 11 - 16 Ohms -
If resistance is not as specified, replace the heated oxygen sensors.
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Reconnect the heated oxygen sensor connectors.
