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Home >> Nissan-Datsun >> 1994 >> Sentra SE-R, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Manual >> Description & Operation >> Compressor Clutch Control >> Engine Control Module (ECM)

Engine Control Module (ECM)

When the ECM senses ground through the A/C request circuit, it grounds the coil circuit of the A/C relay.

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