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2007
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Highlander 4WD V6-3.3L (3MZ-FE)
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Repair and Diagnosis
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Powertrain Management
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Sensors and Switches - Computers and Control Systems
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Testing and Inspection
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Air Fuel Ratio Sensor
Air Fuel Ratio Sensor
INSPECTION
INSPECT A/F SENSOR (BANK 1, 2 SENSOR 1)
Measure the resistance between terminals 1 (HT) and 2 (+B) and 1 (HT) and 4 (AF-).
If the result is not as specified, replace the sensor.