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Home >> Mercedes Benz >> 1971 >> 280SL Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Ignition System >> MERCEDES-BENZ 1970-71 Engine Modification With Fuel Injection >> Maintenance >> Checking 17°C (63°F) Temperature Switch
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Checking 17°C (63°F) Temperature Switch

Remove connector from relay box and connect test lamp to terminals 6 and 8 (All models except 300 SEL/8 6.3 & 600), connect test lamp to terminals 6 and 2 (300 SEL/8 6.3 & 600). Turn on ignition, test lamp should light up only below 17°C (63°F) cooling water temperature.

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