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
If it fails: lemon-manuals.org.ua

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Component Inspection

1. Remove sensor from vehicle, then allow sensor temperature to stabilize in outside air for 10 minutes.
2. Using ohmmeter, check for resistance of 2.1-2.9K ohms at 66-70°F (19-21°C).
3. Place sensor in water and heat slowly. Check sensor for resistance of 250-390 ohms at 174-178°F (79-81°C).