lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

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Engine Controls - A/F And O2 Sensor Identification|Page 2507 > < Engine Controls - A/F And O2 Sensor Identification|Page 2505

GS 430 V8-4.3L (3UZ-FE) (2004)

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Oxygen Sensor: Testing and Inspection

INSPECTION

1. Bank 1, 2 Sensor 1:

INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR

a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT.

Resistance: 11 - 16 Ohm at 20 °C (68 °F)

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

Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)

c. Reconnect the oxygen sensor connector.

2. Bank 1, 2 Sensor 2:

INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR

Engine Controls - A/F And O2 Sensor Identification|Page 2507 > < Engine Controls - A/F And O2 Sensor Identification|Page 2505