Component description for the engine coolant circulation pump - GF20.10-P-3200AMG

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ENGINE 156.980 in MODEL 164, 251

ENGINE 156.984 in MODEL 216, 221

Location for model 164

The engine coolant circulation pump is located on the right next to the engine radiator.

Location on model 251

The engine coolant circulation pump is located on the outer right behind the bumper.

Fig 1: Identifying Engine Coolant Circulation Pump

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location on model 216, 221

The engine coolant circulation pump is located on the lower right next to the engine radiator.

Fig 2: Identifying Engine Coolant Circulation Pump, Engine Oil Heat Exchanger And Electric Air Pump

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

The engine coolant circulation pump ensures circulation of coolant through the engine oil heat exchanger.

Actuation for model 164, 251 (shown is the engine compartment at the right)

The engine coolant circulation pump is actuated for an excessively high engine oil temperature by the ME-SFI [ME] control unit (N3/10) via the coolant circulation pump relay.

Fig 3: Identifying Air Pump Relay, Starter Relay, Engine Compartment Fuse And Relay Box

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Actuation for model 216, 221 (shown is the engine compartment at the front middle)

The engine coolant circulation pump is actuated for an excessively high engine oil temperature by the ME-SFI [ME] control unit (N3/10) via the circulation pump relay.

Fig 4: Identifying Circulation Pump Relay And Rear SAM Control Unit

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.