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)

Or, hide this message: temporarily or permanently

Air Flow Meter/Sensor: Testing and Inspection

INSPECTION
- Connect the negative (-) terminal cable to the battery.
- Turn the ignition switch ON.
- Connect the MAF meter connector.
- Using a voltmeter, connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E3.





- Blow air into the MAF meter, and check that the voltage fluctuates.
- If operation is not as specified, replace the MAF meter.
- Turn the ignition switch LOOK.
- Disconnect the negative (-) terminal cable from the battery.
- Disconnect the MAF meter connector.