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

- Check the volume airflow sensor body for cracks or damage.
- Verify that the measuring core opens smoothly.
- Measure the resistance of the sensor using a circuit tester.

Volume Airflow Sensor Test Connections and Specifications:

- Verify resistance changes gradually between specified terminals as measuring core is moved by hand.
- Replace volume airflow sensor if it fails any of the inspections.