System Description: Notes
WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
The multiplex control system has four internal functions:
- Multiplexing (send multiple signals over shared wires)
- Wake up/sleep modes (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 ('03 model)
- Lights-on reminder
- Key-in reminder
- Key light timer
- Dash lights brightness control
- Entry light control
- Power door locks
- Power window (including key-off timer operation)
- Windshield wiper/washer (including speed sensitive intermittent wiper)
- Security alarm
- Rear window intermittent wiper
- Parking brake alarm ('03 model)