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Home >> Mercedes Benz >> 1993 >> 600SEC (140.076) V12-6.0L (120.980) >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Injection Control >> Exhaust Gas Recirculation Control (EGR)
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Exhaust Gas Recirculation Control (EGR)

The EGR valves are controlled by the LH control units via the EGR switch-over valves (Y27/2 and Y27/3). This switch-over valve is activated at coolant temperatures above 65 °C (149 °F) and only if the engine is between the idle and full load condition.

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