steering AUDI A8 1998 D2 / 1.G AEB Engine Motronic MFI And Ignition System

24-1


Motronic Multiport Fuel
Injection (MFI) and ignition
system Component locations, overview

----
Data Link Connector (DLC)
Located under knee bar, left side of
steering wheel
----
Fuel pump relayPosition 6 on relay panel in driver's side
footwell
----
Oxygen Sensor (O2S) behind Three Way
Catalytic Converter (TWC) -G130- with
Oxygen Sensor (O2S) heater -Z29- In exhaust system behind TWC
----
EVAP system Leak Detection Pump (LDP)
-V144- In left-rear wheelhousing behind splash
shield
Pa
ge 1 of 135 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1

24-60
Evaluation of display group 2 Display
group: 2


Display field:
2
Possible cause
Corrective action
less than 0.50
ms
Smaller values can only occur while driving during
deceleration
more than 1.50
ms Shift into drive range (auto. transmission)
Engine is affected by additional consumers- Move shift lever to P or N
- Illuminate load (A/C, power steering,
generator)

Poor idle (does not run on all cylinders)- Check spark plugs
- Check fuel injectors Page 24
-87


Throttle valve control module -J338 faulty- Check throttle valve control module
Page 24
-99

Display field:
4
Possible cause
Corrective action
less than 1.8
g/s
Large amount of false air between intake air duct and
Mass Air Flow (MAF) sensor - Check intake air system for leaks (false
air) Page 24
-97

larger than 4.0
g/s
Shift lever in drive range (auto. transmission)
Engine affected by additional consumers- Move shift lever to P or N
- Eliminate load (A/C, power steering,
generator)
Pa
ge 79 of 135 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1