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Master Switch

CAUTION: The following test are performed with lockout switch closed (non-lockout position)
  1. Remove master switch from vehicle. Test using self-powered test light or ohmmeter. Replace window control switch if continuity is not as specified in testing. With switch in neutral position, continuity should be present between terminals "A" and "B", "D" and "E", "I" and "L", and terminals "K" and "M". See Fig 1 .
  2. Right Front Circuit With master switch in right front UP position, continuity should be present between terminals "A" and "B", "D" and "E", "I" and "L", and terminals "J"and "K". With switch in right front DOWN position, continuity should be present between terminals "A" and "B", "D" and "E", "I" and "", and terminals "K" and "M".
  3. Left Front Circuit With master switch in left front UP position, continuity should be present between terminals "A" and "B", "C" and "D", "I" and "L", and terminals "K" and "M". With switch in left front DOWN position, continuity should be present between terminals "B" and "C", "D" and "E", "I" and "L", and terminals "K" and "M".
Fig 1: Master Switch Test Terminals (Mark VIII)
G95J14968Courtesy of FORD MOTOR CO.