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

With engine warmed up between 176 to 198 degrees farenheit
Sensor Type Hot Film
Output Voltage Range 0-5 Volts (V)
Measured Output Voltage
mass air flow sensor output voltage (MAF sensor side connector No. 1 or ECM harness side connector No. 41)
Idle (800 RPM) 0.7-1.1 Volts (V)
3000 RPM 1.3-2.0 Volts (V)