24-3
 
  
1 - 
Harness connector 
For O2S behind TWC -G130- and O2S 
heater -Z29- 4-pin connector, greenFor bank 1, sensor 2
2 - 
Harness connector For O2S 2 behind TWC -G131- and O2S 2 
heater -Z30- 4-pin connector, brownFor bank 2, sensor 2
3 - 
Harness connector For HO2S -G39- with O2S heater -Z19-4-pin connector, blackFor bank 1, sensor 1
4 - 
Harness connector For Knock Sensor (KS) 1 -G61-3-pin connector, blue
5 - 
Secondary Air Injection (AIR) solenoid 
valve -N112- 
Pa
ge 3 of 166 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1 
24-4
 
  
6 - 
Intake Air Temperature (IAT) sensor -G42- 
7 - 
Harness connector 
For HO2S 2 -G108- with O2S heater -Z28-4-pin connector, blackFor bank 2, sensor 1
8 - 
Harness connector For Knock Sensor (KS) 2 -G66-3-pin connector, blue
9 - 
Harness connector For engine speed (RPM) sensor -G28-3-pin connector, gray
10 - 
Electronics box (E-box) 
  Contains:Motronic Engine Control Module (ECM) -
J220- Secondary Air Injection (AIR) pump relay -
J299- 
Pa
ge 4 of 166 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1