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Oxygen Sensor Relay: Testing and Inspection

2GR-FE ENGINE CONTROL SYSTEM: A/F SENSOR HEATER RELAY: INSPECTION

1. INSPECT AIR FUEL RATIO SENSOR RELAY

(a) Inspect A/F relay

(1) Using an ohmmeter, measure the resistance between the terminals.

Resistance:

If the result is not as specified, replace the engine room junction block assembly.