Page 3241 of 4133
 
2001 Mercedes-Benz ML320 
2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55  
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Fig. 12: Automatic A/C-Heater Systems Wiring Diagram (2000-01 ML 320 & ML 430 With Cooling Fan 
Control Module - 1 Of 2) 
 
2001 Mercedes-Benz ML320 
2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55  
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        Page 3243 of 4133
 
2001 Mercedes-Benz ML320 
2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55  
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        Page 3244 of 4133
Fig. 13: Automatic A/C-Heater Systems Wiring Diagram (2000-01 ML 320 & ML 430 With Cooling Fan 
Control Module - 2 Of 2) 
 
2001 Mercedes-Benz ML320 
2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55  
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1998-2005 HVAC
Climate Control - 163 Chassis 
GENERAL INFORMATION 
GENERAL NOTES: PASSENGER CARS: CLIMATE CONTROL - AH83.00-Z-9999AZ 
MODEL all  
 Notes on retrofitting an air conditioning 
systemMODEL allAH83.30-P-
0001-02A
 Repair work for defective refrigerant 
circuitMODEL allAH83.30-P-
1782-01A
 Instructions for installing actuator motorsMODEL 199,230.4AH83.10-P-
0001-01R
 Notes on EU type approval requirementsMODEL 170,209,211,220...AH83.70-P-
0001-09Q
 Notes on repairing stationary heaterMODEL 202 up to 31.5.97 retrofitted 
stationary heaterAH83.70-P-
0001-03D
 Information on repairs to stationary heaterMODEL 202 as of 1.6.97, 208 Retrofitted 
Thermo Top C stationary heaterAH83.70-P-
0001-03E
 Notes on repairing TelestartMODEL 163, 168, 170, 202, 208, 210 ...AH83.70-P-
0003-02AA
 Notes on installation of stationary heaterMODEL 215 Retrofitted stationary feelingAH83.70-P-
0008-02N
 Notes on handling refrigerant R134aMODEL all Air conditioning system with 
cold means R134aAH83.30-N-
0003-01A
 Notes on stationary ventilation with 
TelestartMODEL 210.### 1# with Telestart T70 for 
un-networked heaterAH83.70-P-
0009-01B
 Information on installing actuator motorsMODEL 211AH83.10-P-
0001-01T
 Information on installing actuator motorsMODEL 219.3AH83.10-P-
0001-01TX
 Notes on handling refrigerant R134aMODEL 240AH83.30-P-
0003-01H
 Notes on handling refrigerant R134aMODEL 199AH83.30-P-
0003-01SLR
 Notes on repairing the stationary heaterMODEL 163.###1# up to 31.8.01 
Retrofitted Thermo Top C stationary heaterAH83.70-P-
0001-03A
 Notes on repairing stationary heaterMODEL 168 Retrofitted Thermo Top C 
stationary heaterAH83.70-P-
0001-03B
 Information on repairs to stationary heaterMODEL 170.435/445/447 up to 31.1.00 
Retrofitted Thermo Top C stationary heaterAH83.70-P-
0001-03C
AH83.70-P-
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
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 Information on repairs to stationary heaterMODEL 170.444/449/4650001-03CA
 Information on repairs to stationary heaterMODEL 210...AH83.70-P-
0001-03F
 Notes on repairing the stationary heaterMODEL 163.###1# as of 1.9.01 
Retrofitted Thermo Top C stationary heaterAH83.70-P-
0001-03I
 Distinguishing features stationary heater/ 
stationary preheater/heater boosterMODEL 202.### 1# Webasto Thermo Top 
C heaterAH83.70-P-
0003-01A
 Distinguishing characteristics stationary 
heater/ stationary preheater/heater boosterMODEL 210.###1# up to 31.5.00 Heater 
Webasto Thermo Top CAH83.70-P-
0003-01B
 Distinguishing features stationary 
heater/stationary preheater/heater boosterMODEL 168.###1# Heater Webasto 
Thermo Top CAH83.70-P-
0003-01C
 Notes on repairing telestartMODEL 168,170, 202 as of 1.6.97, 
208,210 More retrofitted telestart T60AH83.70-P-
0003-02A
 Notes on repairing telestartMODEL 202 up to 31.5.97 Telestart T60 in 
retrofitted stationary heaterAH83.70-P-
0003-02B
 Notes on repairing telestartMODEL 163 Telestart T60 in retrofitted 
stationary heaterAH83.70-P-
0003-02C
 Notes on repairing TelestartMODEL 215, 220AH83.70-P-
0003-02M
 Notes on differentiating characteristics of 
TelestartMODEL 163, 168, 170, 202, 210 ...AH83.70-P-
0003-03A
 Notes on installation of timerMODEL 163, 168, 170, 202, 208 ...AH83.70-P-
0008-01A
 Notes on installing stationary heater
MODEL 163, 168, 170, 202, 203, 208, 
209, 210, 211, 220, 414 Retrofitted 
stationary heaterAH83.70-P-
0008-02A
 Notes on installing stationary heaterMODEL 450.3 /4 (except, 450.418)AH83.70-P-
0008-02SM
 Notes for timer and/or Telestart
MODELS 163.###1A as of 145270, 
163.### 1X as of 708319 Retrofitted 
stationary heaterAH83.70-P-
0008-03A
 Notes for stationary ventilation with 
TelestartMODEL 163.###, 168.###, 170.###, 
202.###, 208.###1# Telestart T70AH83.70-P-
0009-01A
 Notes on Telestart with GSM antennaMODEL 168, 170, 202, 208.3, 210 
Telestart T70AH83.70-P-
0009-02A
 Conduct if air conditioning system is 
damaged or leakingMODEL all ...AH83.30-N-
0004-01A
 
Protect air conditioning circuit and 
components from moisture when carrying 
out repair work
MODEL allAH83.30-N-
0005-01A
 Procedure if air conditioning system is 
damaged or leakingMODEL 240AH83.30-P-
0004-01H
 Conduct if air conditioning system is 
damaged or leakingMODEL 199AH83.30-P-
0004-01SLR
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
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NOTES ON HANDLING REFRIGERANT R134A - AH83.30-N-0003-01A 
Air conditioning with refrigerant R134a  
The refrigerant R134a is colorless and odorless. 
At normal temperatures it is neither toxic nor flammable, and will not explode in the air, no matter what its 
mixing ratio. 
The R134a refrigerant may only be used in air conditioning systems for which R134a has been specifically 
approved. 
 The refrigerant R134a must not be mixed with other refrigerants (e.g. R12). 
The refrigerant R134a does not contain any chlorofluorocarbons (CFC). In contrast to other refrigerants (e.g. 
R12) it is not hazardous to the environment at normal temperatures. The refrigerant R134a does not damage the 
earth's ozone layer. 
Despite these benefits, refrigerant R134a may only be extracted by experts with suitable extraction, recycling 
and filling equipment that includes integral disposal and reprocessing capabilities. 
CONDUCT IF AIR CONDITIONING SYSTEM IS DAMAGED OR LEAKING - AH83.30-N-0004-01A 
All models  
The air conditioning system should never be operated if it is damaged or when there is evidence of refrigerant 
loss. 
In the event that refrigerant is lost, lubrication can fail. This will lead to damage of the refrigerant compressor. 
Evacuate damaged and/or leaking air conditioning refrigerant circuits as quickly as possible using extraction, 
processing and recharging equipment with integral disposal and reprocessing capabilities. 
PROTECT AIR CONDITIONING CIRCUIT AND COMPONENTS FROM MOISTURE WHEN CARRYING OUT REPAIR 
WORK - AH83.30-N-0005-01A 
 
Protect air conditioning circuit and 
components from moisture when carrying 
out repair work
MODEL 240AH83.30-P-
0005-01H
 
Protect air conditioning circuit and 
components from moisture when carrying 
out repair work
MODEL 164, 199, 203, 209, 251 ...AH83.30-P-
0005-01P
 
Protect air conditioning circuit and 
components from moisture when carrying 
out repair work
MODEL 199AH83.30-P-
0005-01SLR
 Notes on removing and installing the air 
conditioner housingMODEL 209, 463 ...AH83.30-P-
0006-01GM
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
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All models fitted with air conditioning  
 Do not carry repair operations out on the air conditioning circuit in the open air during moist weather. 
Moisture in the refrigerant circuit reduces the system's refrigeration output and leads to damage to the 
components. The acidic substances produced by moisture within the system decompose the desiccant in the 
fluid reservoir and damage the entire system. 
After separating/unscrewing refrigerant lines, immediately seal off the connection openings so that they are 
airproof using suitable stop plugs (parts kit). 
Replace the fluid reservoir every time you open up the refrigeration circuit. 
Always store all spare components in a dry, sealed-off area. Do not remove stop plugs in new components until 
just before they are installed. Use special care when handling the receiver/dryer with its integral desiccation 
unit. 
When a receiver/dryer is left open, the dryer unit quickly becomes saturated with moisture, rendering it useless. 
Check drier cartridge packaging for damage. Dispose of drier cartridges with damaged packaging. 
Install the desiccant cartridge no later than 20 minutes after opening the packaging. 
Further protection against moisture is provided by carefully evacuating the air conditioning system following 
repair operations. By generating vacuum in the system, the evacuation process removes any moisture that might 
have penetrated into the system. 
NOTES ON RETROFITTING AN AIR CONDITIONING SYSTEM - AH83.30-P-0001-02A 
Do not remove the plugs on any of the components until immediately prior to installation. 
Fit all AC lines with new sealing rings. Coat thread and sealing rings with compressor oil. 
BASIC KNOWLEDGE 
VENTILATION, FUNCTION - GF83.10-P-2000GH 
MODEL 163 up to 31.8.01  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
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Saturday, October 02, 2010 3:23:14 PMPage 4 © 2006 Mitchell Repair Information Company, LLC.