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System Descriptions: Notes

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 system DTCs, Mode 2 for input lines)

The system controls the function of these circuits:

Entry light control (ignition key light and ceiling light)
Wiper/washer (intermittent wipe and park functions)
Interlock system
Keyless/power door lock
Gauge assembly, temperature gauge, and indicator lights
HVAC (Compressor and fan control)
Key-in reminder
Lights-on reminder
Seat belt reminder