Defogger Switch Test: 626

Remove rear defogger switch. Check continuity between rear defogger switch terminals "B" (Orange wire) and "C" (Black wire) with rear defogger switch on. See Fig 1 . If continuity is present, rear defogger switch is okay. If continuity is not present, replace rear defogger switch.

Fig 1: Identifying Rear Defogger Switch Terminals (626)

Courtesy of MAZDA MOTORS CORP.