Multiplex Control System (All Except Hatchback & Hybrid): Overview Honda Civic VII

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System Description

The Multiplex Control System has four internal functions

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

The system controls the function of these circuits

1. Entry light control (ignition key light and ceiling light)
2. Wiper/washer (including intermittent wipe and park functions)
3. Interlock system
4. Keyless/power Door Lock
5. Key-in reminder
6. Meter assembly, temperature gauge, and indicator lights
7. HVAC (compressor and fan control)