Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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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)