1997 MERCEDES-BENZ ML320 Complete Repair Manual

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Page 3329 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 70: Identifying Refrigerant Circuit Function (Model 163 Up To 31.8.01 With Code (580) Air
Conditioning Or Tempmatic For USA)
The refrigerant compressor (1) driven by motor compresses the gaseou

Page 3330 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual REFRIGERANT CIRCUIT, FUNCTION - GF83.40-P-2001GI
MODEL 163 as of 1.9.01 with code (580a) Automatic air conditioning
Auxiliary fan, location/task/function Engines 111.977, 112.942GF83.40-P-
2162GH
E

Page 3331 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 71: Identifying Refrigerant Circuit, Function (Model 163 As Of 1.9.01 With Code (580A) Automatic
Air Conditioning)
The refrigerant compressor driven by the motor compresses the gaseous refriger

Page 3332 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual REAR VENTILATION CO NTROL PANEL, FUNCTION - GF83.40-P-2007GI
MODEL 163 as of 1.9.01 with CODE (580a) Automatic air conditioning
N72/2s3 Rear ventilation control panel
Auto button
A

Page 3333 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 72: Identifying Rear Ventilation Control Panel
The rear ventilation control panel (N 72/2s3) enables specific settings to be made for the rear compartment
ventilation system.
The following

Page 3334 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Air distribution button ( ) = air duc ting to rear compartment nozzle
Air distribution button ( ) = air ducting to the air outlets in the rear footwell
The automatic air distribution function

Air distribution button ( ) = air duc ting to rear compartment nozzle
Air distribution button ( ) = air ducting to the air outlets in the rear footwell
The automatic air distribution function can be set by pr essing the Auto button, whereby control is assumed by
the AAC push-button c ontrol module (N22).
RECIRCULATING AIR PU SH-BUTTON, FUNCTION - GF83.40-P-2102-01GI
Function
A brief actuation (< 1.5 s) of the recirculating air pus h-button ( ) energizes the actuator motor for the fresh
air/recirculated air flap, whic h activates the fresh air/recirculated air fl ap and thus closes the fresh air duct and
opens the recirculation duct, in or der to enable the air supply from the passenger compartment. The function
LED illuminates during recirculation mode.
Recirculated air convenience closing function
If the recirculating air pus h-button ( ) is pressed for longer than > 2 s, then alongside the recirculation
function, all open windows and the sliding and tilting roof are automatically closed (window and sliding/
tilting roof must ha ve been normalized ). The function LED illuminates durin g recirculation mode. In order to
prevent any current peaks the sliding/tilting sunroof and power windows are actuated successively.
If the push-button is pressed again for > 2 s, the windows a nd the sliding/tilting sunroof return to the previously
stored position and the fresh air/ recirculated air flap moves to the fresh air position (LED off).
The convenience closing function can only be started if the recirculating LED is not illuminated.
Each window, which has been manually opened during the r ecirculation phase, remains in this position if the
recirculating function is cleared: all other windows move to the stor ed positions. The position of the
sliding/tilting sunroof prior to the st art of the closing operation and that of the side windows is stored in the
memory. The windows and the sliding/tilting sunroof wh ich have been closed by the convenience closing
function, remain closed if the recirculation push-
button was only pressed briefly (t < 1.5 s). In this case, only the
fresh air/recirculated air flap is moved to the fresh-air position. The stored positions are cleared when the
ignition is switched off.
AUTOMATIC AIR CONDITIONING BOX FUNCTION - GF83.40-P-2105-02GI
Operating condition: Air ducting under heater operation

2001 Mercedes-Benz ML320
1998-2005 HVAC Climate Control - 163 Chassis
me
Saturday, October 02, 2010 3:23:16 PMPage 90 © 2006 Mitchell Repair Information Company, LLC.

Page 3335 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 73: Identifying Automatic Air Conditioning Box Function - Operating Condition Air Ducting Under
Heater Operation
Operating condition: HEATING Function
When in heating mode, the blower motor (

Page 3336 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Fig. 74: Identifying Automatic Air Conditioning Box Function - Operating Condition Air Ducting In
Cooling Mode
Operating condition: cooling. Function
When in cooling mode, the blower motor (5) dra

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