lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

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Engine Controls - A/F And O2 Sensor Identification|Page 2133 > < Engine Controls - A/F And O2 Sensor Identification|Page 2131

LS 430 V8-4.3L (3UZ-FE) (2002)

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Oxygen Sensor: Testing and Inspection

INSPECTION

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS (BANK 1, 2 SENSOR 1)

a. Disconnect the oxygen sensor connectors.

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

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

c. Reconnect the oxygen sensor connectors.

2. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS (BANK 1,2 SENSOR 2)

a. Disconnect the oxygen sensor connectors.

Engine Controls - A/F And O2 Sensor Identification|Page 2133 > < Engine Controls - A/F And O2 Sensor Identification|Page 2131