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: Tools and Equipment





ENGINE SIGNAL MONITOR
- Engine Signal Monitor (49 9200 162A)
- Harness Adapter (49 TO18 902)
- Harness Adapter, Power (49 D088 008)
- Sheet Overlay-64 Pin Type (49 G018 906)

The Engine Signal Monitor (49 9200 162A) was developed to check the ECM terminal voltages.