fuse AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual

AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/967/w960_967-0.png AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual

Page 11 of 29

AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual 26-41
      
Checking voltage supply  
     
-  Disconnect connector from Secondary Air 
Injection (AIR) solenoid valve -N112-. 
    
If LED does not light:  -  Connect VAG 1527B voltage tester as fol

Page 12 of 29

AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual 26-42
 
    
 Electrical Wiring Diagrams, Troubleshooting & Component Locations   
 Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition, 
Engine Code(s): APB, Repair Group 24
   
Checking

Page 18 of 29

AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual 26-47
      
Checking voltage supply of Secondary Air 
Injection (AIR) pump relay  
     
-  Switch ignition off.
     
-  Remove Secondary Air Injection (AIR) pump 
relay 
     
-  Connect multimeter

Page 20 of 29

AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual 26-48
      
-  Connect multimeter for voltage measurement as 
follows: 
     
3-socket relay carrier in E-box, 
plenum chamber, position 2  
terminal  
Measure to  
  
4   Engine 
Ground 
(GND)