Passenger's Multiplex Control Unit Input Test: Odyssey

1. Remove right kick panel. Unbolt and pull out passenger's underdash fuse/relay box. Unplug and remove multiplex control unit from back of passenger's underdash fuse/relay box. Inspect connector terminals for damage or corrosion. Repair as necessary and retest system. If connector and terminals are okay, go to next step.
2. Use a DVOM to perform control unit input test. See Fig 1. If an input test indicates a problem, find and correct cause and retest system. If all input test results are okay, replace faulty multiplex control unit.

Fig 1: Passenger's Multiplex Control Unit Input Test (Odyssey)

Courtesy of AMERICAN HONDA MOTOR CO., INC.