1997 MERCEDES-BENZ ML320 Complete Repair Manual

Page 3401 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 130: Identifying Fuse And Relay Module, Additional Fan Connector And Plug Connector, Blue 
NO REFRIGERATION/HEAT FROM AUTOMATIC AIR CONDITIONER - AF83.40-P-3400A 
MODEL 163.### #A as of 289565 up

Page 3402 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Parts ordering notes 
HEATER DOES NOT FUNCTION - AF83.40-P-6008A 
MODEL 163.154 /174 /175 #A as of 289565 up to 348398 with CODE (494) USA version with CODE (580) 
Automatic air conditioning  
MODEL 1

Page 3403 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Commercially available tools 
Parts ordering notes 
SELF-DIAGNOSTIC SYSTEM 
HEATER, DIAGNOSIS, CONTENTS - AD83.20-P-1000GHZ 
MODEL 163  
DIAGNOSIS TOOLS, HEATER - AD83.20-P-2000-01GC 
Commercially ava

Page 3404 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual HEATER, DIAGNOSIS, BASIC KNOWLEDGE - AD83.20-P-2000GH 
MODEL 163  
HEATER CAPACITY, FUNCTION CHECK, HEATER - AD83.20-P-3000-01GH 
Test sequence  
Heater switch (2) on "red" stop  
Blower switch

Page 3405 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 131: Identifying Heater Capacity, Function Check, Heater 
HEATER, DIAGNOSIS, FUNCTION CHECK - AD83.20-P-3000GH 
MODEL 163  
 Heater, diagnosis, basic knowledge AD83.20-P-2000GH
 Check fuses F1/6,

Page 3406 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual AIR CONDITIONING (TEMPMATIC) DIAGNOSIS CONTENTS - AD83.30-P-1000GHZ 
MODEL 163 with CODE (580) Air conditioning or for USA, Tempmatic  
AIR CONDITIONING (TEMPMATIC) PRECONDITIONS FOR OPERATIONAL CHECK

Page 3407 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 132: Locating In-Car Temperature Sensor With Aspirator Nozzle  
1. Check condition of fuses F16, F41, F43, F44.   
2. Check aspirator nozzle for in-car temperature sensor   as follows: With ignit

Page 3408 of 4133

MERCEDES-BENZ ML320 1997  Complete Repair Manual Fig. 133: Locating In-Car Temperature Sensor With Aspirator Blower  
1. Check status of fuses F16, F41, F43, F44.   
2. Check aspirator blower for in-car   temperature sensor: With ignition switched o