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Oxygen Sensor: Testing and Inspection

INSPECTION

1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE)
a. Bank 1 sensor 1, bank 2 sensor 1: Disconnect the sensor connector.

b. Measure the resistance between terminals 1 (HT) and 2 (+B).
If the result is not as specified, replace the sensor.

c. Bank 1 sensor 2, bank 2 sensor 2: Disconnect the sensor connector.

d. Measure the resistance between terminals 1 (HT) and 2 (+B).
If the result is not as specified, replace the sensor.