Federal Models

INSPECTION

1. Allow the engine to warm up to normal operating temperature.
2. Inspect feedback voltage.





- Connect the positive (+) probe of a voltmeter to terminal VF1 (for sensor No. 1) or VF2 (for sensor No. 2) of the Data Link Connector, and negative (-) probe to terminal E1.





- Perform the test as described above.





3. If necessary, replace Heated Oxygen Sensors.

Torque: 44 Nm (33 ft lb)