Scheme 1
Scheme 2
Scheme 3
System Description
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 these circuits
- Entry light control (ignition key light and ceiling light)
- Wiper/washer intermittent wipe and park functions
- Keyless/power door lock
- Meter assembly, temperature gauge, and indicator lights
- HVAC (compressor and fan control)
- Key-in reminder
- Headlight reminder
- Seat belt reminder