Drivers Control Unit Test (Accord)

Disable air bag system. See AIR BAG RESTRAINT SYSTEM articles below. Turn ignition off. Remove instrument panel lower left cover. Remove left knee bolster. Remove underdash fuse/relay box, located near left kick panel.
- For Accord, see AIR BAG RESTRAINT SYSTEMS article.
- For Civic, see AIR BAG RESTRAINT SYSTEMS article.
- For CR-V, see AIR BAG RESTRAINT SYSTEMS article.
- For Odyssey and Oasis, see AIR BAG RESTRAINT SYSTEMS article.
- For Prelude, see AIR BAG RESTRAINT SYSTEMS article.
Remove driver's multiplex control unit from underdash fuse/relay box. Ensure connector and socket terminals are okay. Repair as necessary and retest system. If connector and terminals are okay, using a DVOM, perform control unit input test as indicated. 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 communications control unit.

Fig 1: Drivers Control Unit Input Test (Accord)

Courtesy of AMERICAN HONDA MOTOR CO., INC.