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Home >> Mercedes Benz >> 1988 >> 560SEL >> Repair and Diagnosis >> Engine Performance >> System >> Cis-E System >> Operation >> Coolant Temperature Sensor
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Coolant Temperature Sensor

The coolant temperature sensor is located on the cylinder head. On Federal models, sensor has a 2-pin connector, one for Electronic Ignition System (EZL) and one for the CIS-E injection system. On California models, sensor has 4-pin connector, 2 for ground connections (CIS-E control unit and engine ground) and one connection each for the temperature signals to the CIS-E control unit and the EZL module.

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