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 Temperature Sensor ( Ambient / Intake ): Testing and Inspection


1. With ignition switch Off, disconnect harness connector from sensor.
2. Using suitable ohmmeter, check resistance across terminals of sensor.
3. Resistance should be approximately 2.5k ohms with sensor at room temperature.
4. If resistance value is not as specified, replace sensor.