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Home >> Isuzu >> 1986 >> Trooper II Base, 2D Utility, 2.2 U >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing - Diesel >> Component Testing >> Coolant THERMO Switch
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Coolant THERMO Switch

Place thermo switch in water. Raise water temperature. Connect an ohmmeter and check for continuity above 131°F (50°C). If not, replace coolant thermo switch.