Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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lemon-manuals.org.ua
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Voltage Signal: Description and Operation
^
Electrical load signals (component "ON") are sent to the ECU from the headlight switch, blower motor switch, cooling fan switches and rear window defroster.
^
When these loads are present, ECU activates idle speed control (ISC) valve as needed to maintain correct
idle speed.