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

Air Flow Sensor:





1. Remove the harness connector at the air flow sensor.
2. Connect a volt/ohm meter between terminal 1 and 4 of the air flow sensor plug and measure the resistance.





^ Refer to the intake air temperature sensor graph for the appropriate measurement.

NOTE: It will be necessary to take an accurate measurement of the ambient air temperature.

If the measurement is incorrect the intake air temperature sensor is defective. The air flow sensor (complete unit) must be replaced.