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

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Engine Control Module: Description and Operation





Engine Control Module

The following table provides a quick link to all chapters in this section.





CAUTION!
The use of nails, paper clips, or another unauthorized materials to back-probe electrical harness connectors is strictly prohibited and may cause damage to the electrical harness connectors, terminal ends or damage to a component. Use only the manufacturers test lead kit or an equivalent aftermarket test lead kit for back-probing all electrical harness connectors.

All manufacturer's special tools as well as common tools may contain a manufacturer specific part number. These tools may be substituted with an equivalent aftermarket tool, or are available for purchase from the manufacturer.

Manufacturers special tools as well as common tools that contain a manufacturer specific part number may be referenced in the test procedure illustrations, showing the tool use or installation. If the manufacturer specific tool is not being used, an equivalent aftermarket tool may be installed in the same manner as the manufacturer's special tool.