toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Air-Fuel Ratio (A/F) Sensor|Page 2546 > < Engine Controls - A/F And O2 Sensor Identification|Page 2543
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Oxygen Sensor: Testing and Inspection
Air-Fuel Ratio (A/F) Sensor

INSPECTION

1. INSPECT HEATER RESISTANCE OF A/F SENSOR (Bank 1 Sensor 1)

a. Disconnect the sensor connector.

b. Using an ohmmeter, measure the resistance between terminals +B and HT.

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

Torque: 20 N.m (200 kgf.cm, 14 ft.lbf)

c. Reconnect the sensor connector

2. INSPECT OPERATION OF A/F SENSOR

Air-Fuel Ratio (A/F) Sensor|Page 2546 > < Engine Controls - A/F And O2 Sensor Identification|Page 2543