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Control Unit Input Test (Driver's Door)

Remove underdash fuse/relay box. Remove driver's unit from underdash fuse/relay box. Inspect connector terminals for damage or corrosion. Repair or replace as necessary. Using a DVOM, perform driver's control unit input test. See Fig 1 . If all input tests are okay, replace driver's multiplex control unit.

Fig 1: Multiplex Control Unit Input Test (Driver's Door)
G97F11473Courtesy of AMERICAN HONDA MOTOR CO., INC.