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Door Control Unit Input Test

Remove master power window switch from driver's door. See MASTER POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. Disconnect 20-pin harness connector. Inspect connector terminals for damage or corrosion. Repair or replace as necessary, then retest system. If connections are okay, using a DVOM, perform driver's control unit input test. See Fig 1 or Fig 2 . On Prelude, if all input tests are okay, replace door multiplex control unit.

Fig 1: Door Multiplex Control Unit Input Test (Accord)
G00018605Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Door Multiplex Control Unit Input Test (Prelude)
G97G11474Courtesy of AMERICAN HONDA MOTOR CO., INC.
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