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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A/C Signal: Description and Operation
The A/C compressor clutch operation is monitored by the CIS-E Motronic
control unit. When the A/C compressor clutch is engaged, the CIS-E Motronic control unit changes the output signal to the
idle stabilizer valve to compensate for the additional load placed on the engine.