wiring diagram AUDI A4 1999 B5 / 1.G APB Engine Secondary Air System Workshop Manual

AUDI A4 1999 B5 / 1.G APB Engine Secondary Air System Workshop Manual A4 1999 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/967/w960_967-0.png AUDI A4 1999 B5 / 1.G APB Engine Secondary Air System Workshop Manual

Page 12 of 29

AUDI A4 1999 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 19 of 29

AUDI A4 1999 B5 / 1.G APB Engine Secondary Air System Workshop Manual  Electrical Wiring Diagrams, Troubleshooting & Component Locations   Check wire connection from battery + (terminal 30) to Secondary Air 
Injection (AIR) pump relay -J299- (in 3-socket relay carrier i

Page 20 of 29

AUDI A4 1999 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)

Page 25 of 29

AUDI A4 1999 B5 / 1.G APB Engine Secondary Air System Workshop Manual 26-52
       If LED does not blink:  
     
-  Perform following tests marked with dots:
     
Check wire connection from connector at 
Secondary Air Injection (AIR) pump motor-
V101- to Secondary Air