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 Temperature Sensor ( Ambient / Intake ): Testing and Inspection

Intake Air Temperature Sensor Testing:






1. Verify that ignition switch is OFF.
2. Unplug connector and measure resistance as shown. It should be 2.21 - 2.69K ohms @ 68°F (20°C).
3. If not as specified, replace airflow sensor as a unit.