check engine AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1108/w960_1108-0.png AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual

Page 2 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-2
      
Notes:  
     
This Repair Manual describes On Board 
Diagnostic (OBD) with VAG1551 Scan Tool 
(ST). OBD procedures can also be performed 
with VAG1552 Scan Tool (ST) (VAG1552 Scan 
Tool i

Page 5 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-4
      
Heating and A/C system changes, 1997 
 
     
On Board Diagnostic changes  
     
New A/C control head -E87- with specific 
coding for m.y. 1997, 4-cyl. and 6-cyl. engines. 
     
Notes:

Page 11 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-8
      
VAG1551 Scan Tool (ST), connecting; 
A/C control head -E87-, checking 
version
 
     
Battery Voltage OK
     Fuse 22 (S22) OK
     Ground (GND) connection on engine and 
transmission OK

Page 16 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-13
 
8D0820043D A4-Klimavollautomat DXX
 Coding 00062 WSC ZZZZZ
    
Indicated on display after approx. 5 seconds  
Readout example shows US/CDN version, Zexel A/C compressor, 6 
cylinder gasoline

Page 27 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-21
      
Notes:  
     
1997   If A/C control head -E87- is unable to 
determine the duration of time when ignition is 
off ("standing time"), DTC 01206 "signal for time 
span ignition off" is loa

Page 44 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-34
 
 DTC 01270 continued 
VAG1551 scan 
tool display  Possible cause  
Corrective action  
01270 4121  
A/C Clutch N251) 
  
Speed difference 
too great /SP3) 
 
 
 
 
 
 
 
 
 
 
 
  
Continued o

Page 51 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-38
 Diagnostic Trouble Code (DTC) table, changes specific to vehicles 1997 
 
Notes:  
The following DTCs are no longer recognized beginning m.y. 1997: 
 
00529 Speed info missing (sensor -G111- de

Page 55 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-40
 
VAG1551 scan tool 
display  Possible cause  
Corrective action  
01206  
Signal for time span 
ignition off1) 
 
implausible 
signal /SP  - Short or open circuit in wiring/connections 
between

Page 59 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-43
 Notes:  
 
During Output DTM on vehicles with Control Head (E87) Part Number 8D0 820 043 D, A/C Compressor Clutch (N25) DTC 
"01270, mechanical malfunction SP" may be stored even though no malf

Page 61 of 91

AUDI A4 2000 B5 / 1.G AC System On Board Diagnostic Workshop Manual 01-44
      
Starting output Diagnostic Test Mode (DTM)  
     
-  Start engine, switch on compressor (press 
"Auto" button), adjust air flow to center 
instrument panel outlets only. 
     
-  Connec
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