System Description: Notes

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The multiplex Control System has four internal functions:

Multiplexing (send multiple signals over shared wires)
Wake up/sleep (runs at full power only on demand to reduce battery draw)
Fail-safe (fixes or ignores faulty signals)
Self-diagnosis (Mode 1 for the system, Mode 2 for input lines)

The system controls the function of the following circuits

Engine Oil Pressure Indicator
Seat Belt Reminder
Lights-on Reminder
Key-in Reminder
Key Light Timer
Dash Lights Brightness Control
Entry Light Control (EX, SE) (ignition key light and ceiling light)
Automatic Lights-off (EX)
Power Door Locks
Power Window (including key-off timer operation)
Wiper/Washer (including speed responsive intermittent wiper)
Keyless Entry/Security Alarm (EX, SE)
Interlock system (see SHIFT INTERLOCK SYSTEMS ).