AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owner's Manual

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owner's Manual A4 1998 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/967/w960_967-0.png AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owner's Manual

Page 21 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-49
      
Check activation of the Secondary Air 
Injection (AIR) pump relay  
     
-  Switch ignition off.
     
-  Remove Secondary Air Injection (AIR) pump 
relay. 
     
-  Connect VAG 1527B vo

Page 22 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual      
-  Switch ignition off.
Pa
ge 22 of 29 Secondar
y air s
ystem
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.26.2

Page 23 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-50
      
-  Connect VAG 1598/31 test box at wiring 
harness to ECM, do not connect ECM. 
     
       Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel 
Injection & Ignition, Engine Code(s): APB, Repair

Page 24 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-51
      
Check voltage supply of the Secondary Air 
Injection (AIR) pump motor  
     
-  Remove connector for Secondary Air Injection 
(AIR) pump motor -V101-. 
     
-  Connect VAG 1527B voltage

Page 25 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners 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

Page 26 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-53
      
Combination valve, checking
 
     
Special tools and equipment 
    
Test requirements: 
VAG 1390 Hand Vacuum PumpNo leaks in vacuum lines or hose connections. Vacuum lines not clogged.

Page 27 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-54
 
    
Leak test   -  Remove air distributor (arrows).
    
If it is possible to blow through hose:  
If it is no longer possible to blow through hose:  -  Pull hose from Secondary Air Injection

Page 28 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-55
      
Functional check  
    
-  Remove vacuum hose of combination valve to be checked and connect 
VAG 1390 vacuum pump to combination valve. 
    
If the relevant combination valve does not o

Page 29 of 29

AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Owners Manual 26-56
       If the relevant combination valve opens:  
     
-  Repeat function test at second combination 
valve. 
     
Note:  
     
Use special tool 3231 and the Hazet carburetor 
adjustment key
Page:   < prev 1-10 11-20 21-30