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)
Or, hide this message:
temporarily or
permanently
Circuit Operation
Circuit OperationThe engine or
powertrain control module (ECM or
PCM) receives inputs from switches and sensors, and controls the functions of transmission mode. The multiplexed indicator control unit also controls the "POWER DRIVE" "WINTER DRIVE", "A/T OIL TEMP", and "CHECK TRANS" indicator lights and allows for diagnostic testing through the data link connector, (DLC).