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Home >> Mazda >> 1983 >> GLC Custom, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing - Fwd Sedan Models >> Component Testing >> Water THERMO Switches
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Water THERMO Switches

  1. Remove switch from lower left hand corner of radiator. The switch will have Green/Red and Black wires attached to it.
  2. Place the switch in water with a thermometer and heat up water gradually. Check the temperature at which continuity exists between both terminals of the switch.
  3. The switch should show continuity at 59.4-66.6°F (15-19°C). Replace the switch if it does not agree with standard value.
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