WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Honda Odyssey, 2003 Honda Odyssey, 2002 Honda Odyssey, 2001 Honda Odyssey, and 2000 Honda Odyssey. 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
Lights-on Reminder
Key-in Reminder
Key Light Timer
Dash Lights Brightness Control
Entry Light Control (EX and EXL models)
Automatic Lights-off (EX and EXL models)
Power Window (including key-off timer operation)
Wiper/Washers (including speed sensitive intermittent wiper)
Keyless/Power Door Locks
Interlock
Factory Security Alarm System ('01-04 EX and '02-04 EXL models)

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

System Descriptions: Notes

Use the Manual With the Right Hardware

When to See a Mechanic

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