lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Oxygen Sensor|Service and Repair > < Air Fuel Ratio Sensor (For Sensor 1)|Page 3488
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Oxygen Sensor: Testing and Inspection
Heated Oxygen Sensor (For Sensor 2)

ON-VEHICLE INSPECTION 

INSPECT HEATED OXYGEN SENSOR 

a. Disconnect the sensor connector.
b. Measure the heater resistance between terminals 1 (HT) and 2 (+B) of the sensor.

Standard resistance:
5 to 10 Ohms at 20 degrees C (68 degrees F) 

If the result is not as specified, replace the sensor.

Oxygen Sensor|Service and Repair > < Air Fuel Ratio Sensor (For Sensor 1)|Page 3488