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Home >> Ford >> 1991 >> Tempo Base, FLC >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Heated Glass/Defoggers >> Defogger - Rear Window >> Testing >> Control Assembly Test

Control Assembly Test

  1. Disconnect electrical connector from switch. Connect positive lead of ohmmeter to switch terminal of Gray/Light Blue wire. Connect negative lead of ohmmeter to switch terminal of Black wire. Continuity should exist.
  2. Connect ohmmeter to switch terminal of Brown/Light Blue wire and switch terminal of Purple/Orange wire. Continuity should exist. If continuity does not exist in either test, replace switch.