check engine AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1069/w960_1069-0.png AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual

Page 3 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-78
      
Readiness code, checking
 
     
Test sequence  
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and select the control module for engine 
electronics using "address word" 01   Page

Page 9 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-83
      
Work step 1: Check DTC Memory 
     
Test requirement  
     
Ignition switched on. 
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and select the control module for engine 
electr

Page 11 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-85
      
Work step 3: Adapt throttle valve control 
module to Engine Control Module (ECM) 
     
Test requirement  
     
Engine not running, ignition switched on. 
Rapid data transfer  
HELP
Sele

Page 14 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-87
      
Work step 4: Kick down function, adapting 
     
Test requirement  
     
Engine not running, ignition switched on. 
Initiate basic settin
g 
Q
Input displa
y group number XXX
    
When i

Page 17 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-89
      
Work step 5: Check operating condition of 
oxygen sensor control 
     
-  Start engine (for a vehicle with manual 
transmission: engage clutch). 
     
Note:  
     After starting engine

Page 20 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-91
      
Work step 6: Diagnostic of oxygen sensor 
aging before catalytic converter 
     
Test requirement  
     
Engine continues to run at 2200 RPM. 
Basic Settin
g 
Q
Input display group numb

Page 21 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-92
 
  
Display fields  
  
1   2   3   4  
Display group 034: Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 1)  
Display  xxxx/min  
xxx C  
x.x s  
---  
Indicate

Page 23 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-93
 If specified value "B2-S1 OK" is obtained:  
System in Basic Setting 35  
1 
2 
3 
4
    
When indicated on display:  
-  Check specified value in display field 4.
  
Display fields  
  
1   2

Page 24 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-94
      
Work step 7: Diagnostic of operational 
readiness of oxygen sensors behind catalytic 
converter 
     
Test requirement  
     
Engine continues to run at 2200 RPM. 
Basic Setting 
Q
Inpu

Page 26 of 47

AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code Workshop Manual 01-96
      
Work step 8: Diagnostic of oxygen sensor 
control system 
     
Test requirement  
     
Engine continues to run at 2200 RPM. 
Basic Settin
g 
Q
Input display group number XXX
    
When i
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