mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

GF20.00-P-2200AMG Heating System Shutoff Valve, Component Description|Page 5507 > < Heater Control Valve|Locations|Page 5504
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Heater Control Valve: Description and Operation
GF20.00-P-2200AMG Heating System Shutoff Valve, Component Description

GF20.00-P-2200AMG Heating System Shutoff Valve, Component Description

The shutoff valve is located at the rear on the right cylinder head.

Task

To warm up the engine quickly following a cold start, the shutoff valve can close off the coolant circuit to the heating system.

Design

The shutoff valve consists of a solenoid with a coil resistance of around 12 Ohms at 25 °C.

Function

The heating system shutoff valve is actuated by the ME-SFI control unit (N3/10) via a ground signal if required. The shutoff valve is opened without a
current.
If the vehicle heater is switched on, the shutoff valve is always open (not actuated).

GF20.00-P-2200AMG Heating System Shutoff Valve, Component Description|Page 5507 > < Heater Control Valve|Locations|Page 5504