Operation CHARM: Car repair manuals for everyone.
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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Air Flow Meter/Sensor: Testing and Inspection

Fig. 7 Airflow meter electrical connector:






1. Disconnect electrical connector, Fig. 7, at airflow meter.
2. Connect ohmmeter between connector terminals 7 and 8, then between 6 and 9.
3. Resistance at each pair of terminals should be 0.5 ± .02 ohms.