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Highlander 2WD V6-3.3L (3MZ-FE) Hybrid
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Oxygen Sensor Relay
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Testing and Inspection
Oxygen Sensor Relay: Testing and Inspection
INSPECTION
INSPECT AIR FUEL RATIO SENSOR RELAY
Using an ohmmeter, measure the resistance according to the value(s) in the table.
If the result is not as specified, replace the relay.