1997 AUDI A4 ignition

24-57


If specified value is not obtained:
Electrical Wiring Diagrams, Troubleshooting & Component Locations
If specified value is obtained: - Connect multimeter for voltage measurement as follows.Central electronics in driver-side footwell, left,
position 4
Terminal
Measure to
19 Engine Ground
(GND)
- Switch ignition on.

Specification: approx. battery voltage
- Check wire connections.
- Check following wire connection for open circuit and short circuit to
Ground (GND) and B+: Central electronics in driver-side footwell, left,
position 4
Terminal
VAG1598/31 test
box


Socket
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jection s
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11/21/2002 htt
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24-68

Intake system, checking for leaks
(unmetered air)


Special tools and equipment

Note:
VAS5051 with VAG5051/1
orVAG1551 with VAG1551/3AEngine leak detection spray G 001 800 A1The negative pressure in the intake system sucks in the leak detection
spray with the unmetered air. Leak detection spray decreases ignition
quality and performance of the fuel mixture. This causes a reduction in
engine speed and a sharp increase of CO content. It is absolutely necessary to follow the safety precautions listed on the
can.
Pa
ge 79 of 81 Motronic fuel in
jection s
ystem, servicin
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.24.1

24-70

-
Press button.Rapid data transfer
HELP
Select function XX

Indicated on display (function selection):
- Press buttons -0- and -6- to select "End output" and press -Q- button to
confirm input.
- Switch ignition off.
Pa
ge 81 of 81 Motronic fuel in
jection s
ystem, servicin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.24.1