Driver's Control Unit Input Test

Remove driver's multiplex control unit from underdash fuse/relay block. Inspect connector terminals for damage or corrosion. Repair or replace as necessary. Using a DVOM, perform driver's control unit input test at driver's underdash fuse/relay block socket. See Fig 1 or Fig 2 . On Accord, if all input tests are okay, go to PASSENGER'S CONTROL UNIT INPUT TEST  . On Prelude, if all input tests are okay, replace driver's multiplex control unit.

Fig 1: Driver's Multiplex Control Unit Input Test (Accord)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Driver's Multiplex Control Unit Input Test (Prelude)

Courtesy of AMERICAN HONDA MOTOR CO., INC.