AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual A6 2000 C5 / 2.G AUDI AUDI https://www.carmanualsonline.info/img/6/993/w960_993-0.png AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual

Page 1 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-12
 
     
Secondary Air Injection (AIR) 
system 
     
Check Diagnostic Trouble Code (DTC) 
memory. 
     
       Repair Manual, 2.8 Liter V6 5V Fuel Injection 
& Ignition, Repair Group 01

Page 2 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual & Ignition, Repair Group 01   
     
Notes:  
     
The secondary air injection system injects air 
behind the exhaust valves during a cold start. 
Cold start means engine coolant temperature 
between

Page 3 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-13
      
Flow test 
      During the flow test, the oxygen sensor control is 
switched off (engine runs rich at that time). At the 
same time the secondary air injection pump is 
switched on, inje

Page 4 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual enrichment. This enrichment is recognized by the 
ECM.  
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jection 
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11/21/2002 htt
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Page 5 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-14
 
  
Secondary Air Injection (AIR) system, 
overview
 
1 - 
Motronic Engine Control Module (ECM) -
J220- 
2 - 
Air cleaner 
Connection for intake air of Secondary Air 
Injection (AIR) pump 
3 -

Page 6 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-15
 
  
7 - 
Combination valves 
Located at rear of left and right cylinder 
heads Removing and installing   page 26
-16
8 - 
Engine 
9 - 
Right exhaust manifold 
10 - 
Left exhaust manifold 
11 -

Page 7 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-16
      
Secondary Air Injection (AIR) system 
components, removing and installing
 
      Component locations   page 26
-14
 .  
      Fuel injection and ignition components.  
     
       Repai

Page 8 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-17
      
B - Combination valve, right 
    
-  Remove intake air duct between Mass Air Flow (MAF) sensor and 
intake air elbow (three -arrows- on right). 
-  Remove intake air elbow from throttle

Page 9 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-18
 
    
C - Secondary Air Injection (AIR) pump motor  -  Remove vacuum line -1-. 
-  Disconnect connection tube -2- from combination valve.
   Tightening torque: 10 Nm (7 ft lb).
-  Remove bolts

Page 10 of 10

AUDI A6 2000 C5 / 2.G AHA ATQ Engines Secondary Air System Workshop Manual 26-19
 
    
-  Remove air duct to generator at front of air shroud.
-  Disconnect connection at connector tube to Secondary Air Injection 
(AIR) pump combination valves (left arrows), pull down to re