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


Special Service Tool-SST (Breakout Box):





- Special Service Tool (SST) "Break Out Box" is used when checking pin voltages on the Powertrain Control Module (PCM), related systems and components.