Page 3417 of 4133
Fig. 144: Air Conditioning (Tempmat ic) Test Of Electrical System Blending Air Flap Servo Motor GND 
AIR CONDITIONING (TEMPMATIC) TEST OF ELECTRICAL SYSTEM REFRIGERANT COMPRESSOR ACTUATION -  
AD83.30-P-6000-08GH 
Fig. 145: Air Conditioning (Tempmat  ic) Test Of Electrical System Refrigerant Compressor Actuation 
AIR CONDITIONING (TEMPM ATIC) TEST OF ELECTRICAL SYSTEM REFRIGERANT PR ESSURE SENSOR - AD83.30-P- 
6000-09GH 
Fig. 146: Air Conditioning (Tempm  atic) Test Of Electrical System Refrigerant Pressure Sensor 
OUTSIDE AIR TEMPERATURE SENSOR, TESTING EL ECTRICAL SYSTEM OF TAC - AD83.30-P-6000-24GH 
as of 1.12.99  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
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        Page 3418 of 4133

Fig. 147: Outside Air Temperature Sensor, Testing Electrical System Of TAC 
AIR CONDITIONING (TEMPMATIC) ELECTRICAL SYSTEM TESTING - AD83.30-P-6000GH 
MODEL 163 with CODE (580) Air conditioning or Tempmatic for USA  
 Air conditioning component 
arrangement GF83.30-P-
0003-01GH
 Overview of climate control wiring 
diagrams PE83.00-P-
1100E
 Connect hand-held tester (HHT), read 
out diagnostic trouble code memoryModel 163 up to 31.8.01 
 Erase fault memory in control module 
(N19) using HHT when testing is completeAD00.00-P-
2000-03C 
 Air conditioning (Tempmatic) 
diagnosis previous knowledge AD83.30-P-
2000GH
 Air conditioning (Tempmatic) 
diagnosis function check The testing of the fresh air/recirculated 
air flap actuator motor (M39) is carried out 
during the function checkAD83.30-P-
3000GH
 Testing   
1
Circuit 15 power supply, air 
conditioning (Tempmatic) electrical 
system testing
 AD83.30-P-
6000-01GH
2Circuit 31 ground, air conditioning 
(Tempmatic) electrical system testing AD83.30-P-
6000-02GH
3
In-car temperature sensor, air 
conditioning (Tempmatic) electrical 
system testing
 AD83.30-P-
6000-03GH
4
Anti-icing protection temperature 
sensor, air conditioning (Tempmatic) 
electrical system testing
 AD83.30-P-
6000-04GH
5
Temperature selector wheel control 
voltage Air conditioning (Tempmatic) 
electrical system testing
 AD83.30-P-
6000-05GH
6
Blending air flap servo motor control 
voltage, air conditioning (Tempmatic) 
electrical system testing
 AD83.30-P-
6000-06GH
7Blending air flap actuator motor 
ground, air conditioning (Tempmatic)  AD83.30-P-
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:17 PMPage 174 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 3419 of 4133

TESTING & REPAIR 
TESTING AND REPAIR WORK: PASSENGER CARS: CLIMATE CONTROL - AR83.00-Z-9163AA 
MODEL 163  
electrical system testing6000-07GH
8
Refrigerant compressor actuation, air 
conditioning (Tempmatic) electrical 
system testing
 AD83.30-P-
6000-08GH
9
Refrigerant pressure sensor, air 
conditioning (Tempmatic) electrical 
system testing
 AD83.30-P-
6000-09GH
10
Ambient temperature sensor, air 
conditioning (Tempmatic) electrical 
system testing
as of 01.12.99AD83.30-P-
6000-24GH
 Remove/install center outlet flap 
actuator motorMODEL 163...AR83.10-P-
2019GH
 Removing and installing rear air 
nozzleMODEL 163.113/154 /174 #A as of 289565, 163.113 #X 
as of 754620, 163.128 /157 /175AR83.10-P-
4800GH
 Remove, install switch unit for 
heater/ ventilationMODELS 163.113/136/154/172/174 up to 31.8.01 with 
CODE (580) air conditioning or Tempmatic for USAAR83.20-P-
1835GH
 Remove and install heat 
exchanger from heater housingMODEL 163AR83.20-P-
3400GH
 Replace bulbs in push-button 
control moduleMODELS 163.113/154/174/136/172 up to 31.8.01AR83.25-P-
1123GH
 Remove and install series 
resistor for heater blowerMODEL 163.113/128 /136 /154 /157 /172 /174 /175AR83.25-P-
1250GH
 Remove/install cover at air 
intakeMODEL 163.113/128 /136 /154 /157 /172 /174 /175AR83.25-P-
1405GH
 Carry out quick test on air 
conditioning systemMODEL 163, 901, 902, 903, 904 ...AR83.30-
D-1209A
 
Draining, evacuating and 
refilling air conditioning, 
checking function and checking 
for leaks
MODEL 163...AR83.30-P-
1760GH
 
Remove/install defroster vent 
flap actuator motor for 
windshieldMODEL 163.113/154 /174 #A as of 289565, 163.113 #X 
as of 754620, 163.128 /157 /175AR83.30-P-
2006GH
 Remove/install footwell flap 
actuator motorMODEL 163...AR83.30-P-
2007GH
 Remove/install rear shutoff flap 
actuator motorMODEL 163.113/154 /174 #A as of 289565, 163.113 #X 
as of 754620, 163.128 /157 /175AR83.30-P-
2008GH
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:17 PMPage 175 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 3420 of 4133

 Remove/install fresh 
air/recirculated air stepper motorMODEL 163...AR83.30-P-
2010GH
 
Removing and installing 
blending air increment 
adjustment motor
MODEL 163...AR83.30-P-
2020GH
 Remove and install evaporator 
housingMODEL 163...AR83.30-P-
5200GH
 Disassembling, assembling A/C 
housingMODEL 163 with CODE (580) Air conditioning or, in 
USA, Tempmatic A/CAR83.30-P-
5201GH
 
Correcting oil level in air 
conditioning following repair or 
slow refrigerant loss
MODEL 163, 202, 208, 210, 215, 220 ...AR83.30-P-
5251E
 
Correcting oil level in air 
conditioning after replacing 
parts
MODEL 163, 202, 208, 210, 215, 220 ...AR83.30-P-
5252E
 
Correcting oil level in air 
conditioning after system 
suddenly loses all refrigerant
MODEL 163, 202, 208, 210, 215, 220 ...AR83.30-P-
5253E
 Remove and install expansion 
valveMODEL 163...AR83.30-P-
5520GH
 Remove/install evaporatorMODEL 163 with CODE (580) Air conditioning or 
Tempmatic for USAAR83.30-P-
5540GH
 Remove/install air conditioning 
blower motorMODEL 163...AR83.30-P-
5560GH
 Remove/install blower motor in 
rearMODEL 163.113/154 /174 #A as of 289565, 163.113 #X 
as of 754620, 163.128 /157 /175AR83.30-P-
5565GH
 Remove/install auxiliary fanMODEL 163.136 /154 /157 /172 with CODE (580) Air 
conditioning or Tempmatic for USAAR83.30-P-
5600GH
 Remove and install 
receiver/drierMODELS 163.113/136 /154 /157 /172 /174 /175 with 
CODE (580) Air conditioning or Tempmatic for USAAR83.30-P-
6520GH
 Remove and install 
receiver/drierMODEL 163.128AR83.30-P-
6520GI
 Install/remove condenserMODEL 163...AR83.30-P-
6540GH
 Remove, install air conditioning 
control moduleMODELS 163.113/136/154/172/174 up to 31.8.01 with 
CODE (580) air conditioning or Tempmatic for USAAR83.30-P-
6600GH
 Remove and install evaporator 
temperature sensorMODEL 163 with CODE (580) Air conditioning or 
Tempmatic for USAAR83.30-P-
8085GH
 Remove/install outside air 
temperature sensorMODEL 163...AR83.30-P-
8086GH
 Remove/install air outlet 
temperature sensorMODEL 163...AR83.30-P-
8087GH
 Remove/install air outlet 
temperature sensorMODEL 163...AR83.30-P-
8087GI
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:17 PMPage 176 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 3421 of 4133

 Remove/install air outlet 
temperature sensorMODEL 163...AR83.30-P-
8087GJ
 
Remove, install in-car 
temperature sensor for aspirator 
blower (M9)MODELS 163.113/136/154/172/174 as of 1.9.99 up to 
31.8.01AR83.30-P-
8100GH
 
Remove/install switch 
unit/automatic air conditioning 
control moduleMODEL 163.113/154 /174 #A as of 289565, 163.113 #X 
as of 754620, 163.128 /157 /175AR83.40-P-
6500GH
 Remove and install sun sensorMODEL 163...AR83.40-P-
6720GH
 Remove/install summer/winter 
operation switchMODEL 163, 168, 170, 202, 208 ...AR83.70-P-
0001A
 Removing, installing stationary 
heater antennaMODEL 163.### 1# Retrofitted stationary heater with 
Telestart T60AR83.70-P-
0002B
 Remove/install stationary heater 
antennaMODEL 163.### 1# Retrofitted stationary heater with 
Telestart T70AR83.70-P-
0002BA
 Remove/install Telestart 
receiverMODEL 163, 168, 170, 202, 208, 210 ...AR83.70-P-
0003BA
 Removing and installing 
telestart receiverMODEL 163.### 1# Retrofitted telestart T60AR83.70-P-
0003H
 Checking Telestart remote 
controlMODEL 163, 168, 170, 202, 208, 210 Telestart T60AR83.70-P-
0005A
 Check Telestart transmitterMODEL 163, 168, 170, 202, 203, 208, 209, 
210,211,220,463...AR83.70-P-
0005IA
 Check emission level, adjust if 
necessaryMODEL 163, 168, 170, 202, 208, 210 ...AR83.70-P-
1177H
 Remove/install heater unitMODELS 163.136/154/157/172/174/175 1# Retrofitted 
Thermo Top C stationary heaterAR83.70-P-
5302I
 Remove/install heaterMODEL 163.113 1# Retrofitted Thermo Top C stationary 
heaterAR83.70-P-
5302IA
 Remove/install heaterMODEL 163.128 Retrofitted Thermo Top C stationary 
heaterAR83.70-P-
5302IB
 Remove/install combustion air 
blower unitMODEL 163, 168, 170, 202, 208, 210 ...AR83.70-P-
5555G
 Removing and installing fuel 
metering pumpMODEL 163.### 1# up to 31.12.99 Retrofitted Thermo 
Top C stationary heaterAR83.70-P-
5652G
 Remove/install coolant 
circulation pumpMODEL 163.### (except 163.128) 1# Retrofitted 
Thermo Top C stationary heaterAR83.70-P-
5700E
 Remove/install burner insertMODEL 163, 168, 170, 202, 208, 210 ...AR83.70-P-
5772G
 Remove/install burner insert 
with glow pinMODEL 129, 163, 168, 170, 202, 203, 209, 210, 211, 
215, 219, 220, 230, 240 ...AR83.70-P-
5773A
 Remove/install timerMODEL 163, 168, 170, 202, 208 ...AR83.70-P-
5892D
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:17 PMPage 177 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 3422 of 4133

REMOVE/INSTALL CENTER OUTLET FLAP ACTUATOR MOTOR - AR83.10-P-2019GH 
MODEL 163.113 #A as of 289565, 163.113 #X as of 754620, 163.154 /174 #A as of 289565, 163.128/157/175
Fig. 148: Identifying Center Outlet Flap Actuator Motor Components
 
REMOVING AND INSTALLING REAR AIR NOZZLE - AR83.10-P-4800GH 
MODEL 163.113 /154 /174 #A as of 289565, 163.113 #X as of 754620, 163.128/157/175  
 Remove/install control 
module/heat exchanger unitMODEL 163, 168, 170, 202, 208, 210 ...AR83.70-P-
5935G
 
 Remove/install  
1.1Remove instrument cluster Left-hand drive vehicle only.AR54.30-P-
6015GH 
1.2Remove glove compartment Right-hand drive vehicle only.AR68.10-P-
1400GI 
2Unscrew screws (1)  
3Remove center outlet flap actuator 
motor (M2/22) from air duct Installation: Adjust zero position of 
actuator motor with STAR DIAGNOSIS. 
4Disconnect connector  
5Install in the reverse order  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:18 PMPage 178 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 3423 of 4133
Fig. 149: Identifying Rear Air Nozzle Components 
REMOVE, INSTALL SWITCH UNIT FOR HEATER/VENTILATION - AR83.20-P-1835GH 
MODELS 163.113/136/154/172/174 up to 31.8.01 with CODE (580) air conditioning or Tempmatic for 
USA  
  Remove/install  
1Remove rear center console (1) AR68.20-P-2020GI 
2Loosen retaining clamps (2) on the sides of the air nozzle (3)  
3Remove air nozzle (3) from the rear center console  
4Install in the reverse order  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:18 PMPage 179 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 3424 of 4133
Fig. 150: Identifying Switch Unit For Heater/Ventilation Components 
REMOVE AND INSTALL HEAT EXCHANGER FROM HEATER HOUSING - AR83.20-P-3400GH 
MODEL 163  
 
 Remove/install  
1Remove radio AR82.60-P-
7502EA 
2Remove center part of instrument panel (1) AR68.10-P-
1030GH 
3Unscrew bolts at heater/AC controls (4) and 
remove controls  
4Detach cable (2, 3) Unclip cables at 
heater/AC controls. 
5Disconnect connector (X72/3) at heater/AC 
controls (4)  
6Install in the reverse order  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:18 PMPage 180 © 2006 Mitchell Repair Information Company, LLC.