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

Checking Mass Air Flow Sensor Connector

Checking The Mass Air Flow Sensor Connector
- Clean and grease mass air flow (MAF) sensor connector.
- Check to see if symptom persists.
- Do the fault symptoms persist?

Yes:
^ Proceed to test step below.

No:
^ Operation done.

Connecting The Test Box
- Connect the test box and check ground terminals.
- Connect engine control module (ECM).
- Check all signals to and from engine control module.

^ Operation done.