lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Relays and Modules - Computers and Control Systems > < Diagram Information and Instructions|Page 2033
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Oxygen Sensor: Testing and Inspection

HEATED OXYGEN SENSORS (BANK 1 SENSOR 1, 2) INSPECTION 

1. Inspect heater resistance of heated oxygen sensors

(BANK 1, SENSOR 1, 2)
(a) Disconnect the sensor connector.

Bank 1 Sensor 1

Bank 1 Sensor 2

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

Resistance: At 20°C(68°F) 11 - 16 ohms. 

If resistance is not as specified, replace the sensor.

(c) Reconnect the sensor connector.

2. Inspect operation of heated oxygen sensors

(BANK 1, SENSOR 1, 2) 

Relays and Modules - Computers and Control Systems > < Diagram Information and Instructions|Page 2033