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

Checking Mass Air Flow Sensor





Checking Mass Air Flow Sensor
- Ignition ON.
- Mass air flow (MAF) sensor connected.
- Connect a voltmeter between mass air flow sensor connector terminals 2 and 4.
- The voltmeter should read 0.1 - 0.2 Volts.

If reading is OK:
^ Proceed to: Checking Ignition Coils.

If reading is incorrect:
^ Fault-trace mass air flow sensor.