1997 MERCEDES-BENZ ML320 Complete Repair Manual

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MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 35: Identifying Heater Core 
HEATING WATER CIRCULATION PUMP FUNCTION - GF83.20-P-2102-01GI 
Function  
The quantity of coolant delivered to the heat exchanger when the engine is running is depend

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MERCEDES-BENZ ML320 1997  Complete Repair Manual The heating water circulation pump runs in any event 1 minute after starting residual engine heat operation. The 
overshoot conditions at least will be fulfilled. 
Overshoot conditions  
Coolant tempe

Page 3291 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 37: Identifying Heater Box Function - Operating Condition Heating 
Operating condition: Heating Function  
In the heating operating status, the fresh air (A) is drawn in by the blower (5) into th

Page 3292 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 38: Identifying Heater Box Function - Operating Condition No Heating 
Operating condition: No heating Function  
In the "no heating" operating status, the fresh air (A) is drawn in by the blower

Page 3293 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 39: Identifying Heater Box Function - Operating Condition No Recirculated Air Heating 
Operating condition: No "recirculating air" heating Function  
In the no "recirculated air" heating mode the

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MERCEDES-BENZ ML320 1997  Complete Repair Manual and therefore forms a complete unit. 
The heater housing distributes the air which is required to ventilate the vehicle interior to the relevant air ducts 
and air outlets depending on the temperature

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MERCEDES-BENZ ML320 1997  Complete Repair Manual The fresh air/recirculated air flap shuts off the supply of recirculated air.
Fresh air is drawn in. 
Recirculation mode  
The fresh air/recirculated air flap shuts off the supply of fresh air. Air is

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MERCEDES-BENZ ML320 1997  Complete Repair Manual HEATER HOUSING POSITION/TASK/FUNCTION - GF83.20-P-2110GC 
MODEL 163 up to 31.8.01  
168 up to except CODE (580) Air conditioning or Tempmatic for USA  
Shown on model 168 as of 1.03.01  
Fig. 42: Iden