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




MAF and IAT Sensor On-Vehicle Inspection

NOTE:

Before performing this inspection, be sure to read the "Precautions for ECM Circuit Inspection" under Service Precautions Precautions for Engine.

Check that MAF sensor signal and IAT sensor signal are output properly. Pinout Values and Diagnostic Parameters

If faulty condition is found, check the following points:

- Wire harness and connections
- MAF and IAT sensor Inspection