AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual https://www.carmanualsonline.info/img/6/1093/w960_1093-0.png AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual

Page 1 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-51
 
     
Output Diagnostic Test Mode 
(DTM) (function 03) 
     
Notes:  
     
Output Diagnostic Test Mode (DTM) is only 
possible with engine idle and ignition switched 
on. 
     The electric

Page 2 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-52
       Output Diagnostic Test Mode (DTM) activates 
the following components in the specified 
sequence:  
     
Activation sequence  
1   Evaporative Emission (EVAP) canister purge 
regulator v

Page 3 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual      
Fuses for engine electronics OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations   
Pa
ge 3 of 16 Out
put Dia
gnostic Test Mode 
(DTM
) (function 03
)
11/22/2002

Page 4 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-53
      
Test sequence  
     
- Connect VAS5051 tester   Page 01
-7 and 
select vehicle system "01 - Engine electronics". 
Ignition must remain switched on for this. 
    
Display on VAS5051:  
-

Page 5 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-54
      
Activating the EVAP canister purge regulator 
valve (tank ventilation valve)  
     
Note:  
     The Fuel Pump (FP) relay must trigger, the Fuel 
Pump (FP) must run, flowing noise at fue

Page 6 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-55
      
Activating the Secondary Air Injection (AIR) 
solenoid valve  
     
- 
Press button
    
Display on VAS5051:  
If valve is not activated (does not click):  
 Repair Manual, 1.8 Liter 4
-

Page 7 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-56
      
Activating the Secondary Air Injection (AIR) 
pump relay  
     
- 
Press button
    
Display on VAS5051:  
If the Secondary Air Injection (AIR) pump motor does not start up in 
intervals

Page 8 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-57
      
Activating wastegate bypass regulator valve -
N75-  
     
- 
Press button
    
Display on VAS5051:  
If valve is not activated (does not click):  
 Repair Manual, 1.8 Liter 4
-Cyl. 5V Tu

Page 9 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-58
      
Activating camshaft adjustment valve  
     
- 
Press button
    
Display on VAS5051:  
If valve is not activated (does not click):  
 Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mec

Page 10 of 16

AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual 01-59
      
Activating Leak Detection Pump (diagnostic 
pump for tank ventilation system)  
     
- 
Press button
    
Display on VAS5051:  
Note:  
The click can be heard by listening near the rear
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