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Home >> Isuzu >> 1982 >> Pickup 2.2L Eng VIN S, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Diesel Fuel Injection >> Testing >> Glow Plug Relays >> Thermal Switch

Thermal Switch

Continuity should exist when switch is at a temperature lower than 109-122°F (43-50°C). No continuity should exist when above 116-127°F (47-53°C). If switch does not operate properly, replace it.