AUDI A4 1996 B5 / 1.G Climate Control Components In Passenger Compartment Workshop Manual
Manufacturer: AUDI, Model Year: 1996, Model line: A4, Model: AUDI A4 1996 B5 / 1.GPages: 34, PDF Size: 0.61 MB
Page 1 of 34

87-120
 
     
Climate control components 
in passenger compartment, 
servicing 
      Component electrical testing   page 01
-115
 .  
     
A/C control head -E87-, removing and 
installing
 
     
Notes:  
     
Always check DTC memory before removing 
E87. 
     After replacing E87, always:
     
  -  Check coding or enter new coding.
     
  -  Perform basic setting.
     
  -  Check DTC memory.
     Vehicles equipped with Nippondenso 
compressors must have A/C control head E87 
with Part No. index "H" and higher installed to 
allow for correct coding. Coding E87   page 01
-8 . 
     
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Page 2 of 34

If 22  C (71  F) is always displayed after 
switching on the ignition regardless of the last 
setting, check voltage supply to E87 (terminal 
30) using wiring diagram. 
     
E87 readout can be switched over from  C to 
F and vice versa by pressing the "temperature 
+" and "recirculating air" buttons 
simultaneously. 
     
If E87 remains in operation after switching off 
the ignition, test cable connection to E87 
connector -D- contact -1- for short circuit to 
positive (connection for auxiliary heater 
operation) using wiring diagram. 
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Page 3 of 34

87-121
      
Notes:  
     
If both display fields do not light up with ignition 
switched on, check coding of -E87- and conduct 
electrical tests if necessary   page 01
-135
 . 
     
For m.y. 1997, the illumination of the display 
field and the operating button is via light 
emitting diode (LED), and can not be replaced. 
     Always refer to parts information for correct 
control head versions. 
     Control heads with part number 8D0 820 043 
should only be installed in vehicles through m.y. 
1996. 
     Control heads with part number 8L0 820 043 
should only be installed in vehicles beginning 
m.y. 1997. 
     A/C control head -E87- with Part No. 8D0 820 
043 can only be installed in vehicles up to and 
including m.y. 1996. 
8L0 820 043B A4-
A/C fully automatic DXX
Codin
g XXXXX 
WSC ZZZZZ
    
M.y. 1997 vehicles can only have A/C control head -E87- with the Part 
No. 8L0 820 043 up to and including Part No. index letter "C." For m.y. 1998 the harness connector to A/C control head -E87- has 
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Page 4 of 34

changed (connections for illumination, terminal 58, terminal 58s). 
8L0 820 043D A4-
A/C full
y automatic DXX
Coding XXXXX 
WSC ZZZZZ
    
For vehicles beginning m.y. 1998 there is only one A/C control head -
E87- (Part No. 8L0 820 043 beginning with Part No. index letter "D") 
that can be used. 
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Page 5 of 34

87-122
      
Notes:  
     
If both display fields of A/C control head -E87- 
(Part No. 8L0 820 043 beginning with Part No. 
index letter "D") are not illuminated when the 
ignition is switched on, check the voltage supply 
from terminal 58d (dimmer) to A/C control head 
-E87-  page 01
-115
 (Electrical test). 
     
If the buttons for A/C control head -E87- (Part 
No. 8L0 820 043 beginning at Part No. index 
letter "D") do not light up when the light is 
switched on, check the voltage supply from 
terminal 58s (illumination) to A/C control head -
E87-  page 01
-115
 (Electrical test). 
     
If an A/C control head -E87- with the Part No. 
8L0 820 043 beginning with Part No. index 
letter "D"is installed in a 1997 m.y. vehicle, the 
brightness in the switch cannot be changed   
page 01
-115
 (Electrical test). 
     
If an A/C control head -E87- with Part No. 8L0 
820 043 including Part No. index letter "C" is 
installed in a 1998 m.y. vehicle, the brightness 
in the switch cannot be changed   page 01
-
115
 (Electrical test). 
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Page 6 of 34

87-123
      
Removing and installing (A/C control head 
with double display)  
     
-  Check DTC memory. 
     
CAUTION! 
     
Obtain security code for anti-theft radio.
     Note customer's pre-set radio stations.
     Disconnect battery Ground (GND) strap.
      Remove Radio  
       Repair Manual, Radio, Telephone, Navigation, 
Repair Group 91
 
    
Remove center instrument panel trim   Repair Manual, Body Interior, Repair Group 70
   - Remove screws -A-.
- Remove screws -B-.
-  Remove A/C control head. 
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Page 7 of 34

87-124
 
    
Notes:   -  Push back connector locks and unplug electrical connectors.
-  Install in reverse order of removal.
    
After installing E87, check that shaped hose -C- of temperature sensor 
G56 (blower V42) is routed correctly (not kinked). When installing screws -B-, position the center trim mounts correctly.After installing E87, always confirm correct coding, perform basic 
setting and check DTC memory. 
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Page 8 of 34

87-125
      
Removing and installing (A/C control head 
with single display)  
     
Removing 
     
CAUTION! 
     
Obtain security code for anti-theft radio.
     Note customer's pre-set radio stations.
     Disconnect battery Ground (GND) strap.
      Remove radio or radion with navigation system  
       Repair Manual, Radio, Telephone, Navigation, 
Repair Group 91
 
     
-  Grip control head through radio opening and 
slide rearward. 
     
Notes:  
    
 Parts catalog   The control head is held in the center console with 4 clips -A-.Before replacing the control head, ensure correct application (e.g. with 
or without knockouts for switches for seat heaters) 
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Page 9 of 34

Press seat heater switches -C- back into control head so that latches -
B- are engaged. Make sure that the hose for the instrument panel interior temperature 
sensor -G56- is not kinked or otherwise closed off. 
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Page 10 of 34

87-126
      
A/C control head -E87- illumination 
bulbs, removing and installing
 
     
-  Remove A/C control head   page 87
-120
 .
    
Notes:  - 
Turn bulbs 90  and remove.-  Install in reverse order of removal.
Always replace with bulb of the same power rating; refer to current 
parts information. Bulbs -A- illuminate control panel.Bulbs -B- illuminate display panels.Testing, output Diagnostic Test Mode (DTM)   page 01
-42
 .Pa
ge 10 of 34 Climate control com
ponents in 
passen
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partment, servicin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.HA01.87.21