Landcruiser 4WD L6-3955cc 4.0L OHV (3F-E) (1988)
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Oxygen Sensor: Testing and Inspection
INSPECTION OF OXYGEN SENSOR
1. WARM UP ENGINE.
Allow the engine to reach normal operating temperature.
2. INSPECT FEEDBACK VOLTAGE.
Connect the positive (+) probe of a voltmeter to terminal VF1 of the check connector, and negative (-) probe to terminal E1.
