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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Cruise Control

Cruise Control:





Cars without TCS:
When the Cruise Control is activated, a 12 V signal is applied to pin 36 of the ECM, causing the charging pressure to be limited to basic charging pressure.


Cars with TCS:
On cars with TCS, the Cruise Control function is integrated in the ETS control module and charging pressure not limited to basic charging pressure.