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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Control Module: Description and Operation
The EC-AT (Electronically Controlled Automatic Transaxle)
control unit, located under the left side of the dash, sends a transmission range position signal to the ECU. Because engine operating requirements vary according to which transmission range the vehicle is operating in, the EC-AT signal is utilized (along with several other input signals) in ECU calculations for ignition timing.