buttons AUDI A4 1999 B5 / 1.G ATW Engine Motronic Fuel Injection Syst

24-29

Note:

Idle speed cannot be adjusted.
Idle speed is checked during basic setting of
the engine.
During basic setting, the Evaporative Emission
(EVAP) canister purge regulator valve (EVAP
valve -N80-) is closed and the A/C compressor
is switched off

Test sequence

- Check DTC memory Page 01
-16
. There must
not be any DTCs stored, repair malfunctions if
necessary, erase DTC memory, switch engine
off and start again, road test vehicle and check
DTC memory again as a control measure.

- Let engine continue to run at idle.

WARNING!

The electric fan for the radiator must not be
running. Rapid data transfer
HELP
Select function XX

When indicated on display
-
Press buttons -0- and -4- to select "Initiate basic setting" and press -Q-
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jection s
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24-30

Basic Settin
g
Q
Enter display group number XXX

When indicated on display
- Press buttons -0-, -5- and -6- to select "display group number 056" and
press -Q- button to confirm input.
System in basic setting 56
1
2
3
4

When indicated on display
- Check whether the engine speed in display field 1 (actual engine speed) is
within tolerated range.

Display fields

1 2 3 4
Display group 056: Idle stabilization at operating temperature
Display
xxx /min
xxx /min x.x % X X X X X
Indicated
Engine speed (actual)
Engine speed
(specified) Idle control
Torque
change Operating conditions
Specified
value FWD: 740 to 860 RPM
AWD: 800 to 920 RPM FWD: 800 RPM
AWD: 860 RPM x.x % 0 0 0 0 0
Note
If specified value is not obtained
Page 24
-32

Significance of numbers
Page 24
-32
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jection s
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24-61
Component location Overview of component
locations Page 24
-5

Test requirements:

Coolant Temperature at least 80 C.

Electrical consumers switched off (radiator
fan must NOT run during test).
A/C switched off.

Checking function

- Connect VAS5051 tester or VAG1551 scan tool
and select control module for engine electronics
using "address word" 01 Page 01
-10
. Engine
must run at idle.
Rapid data transfer
HELP
Select function XX

When indicated on display
- Press buttons -0- and -4- to select "Initiate basic setting" and press -Q-
button to confirm input.
Basic Setting
Q
Enter displa
y group number XXX

When indicated on display
- Press buttons -0-, -0- and -2- to select "display group number 002" and
press -Q- button to confirm input. When indicated on display
Pa
ge 70 of 81 Motronic fuel in
jection s
ystem, servicin
g
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yp
e=re
pair&id=AUDI.B5.FU06.24.1

24-69

Test sequence

- Connect VAS5051 tester or VAG1551 scan tool
and select control module for engine electronics
using "address word" 01 Page 01
-10
. Engine
must run at idle.
Rapid data transfer
HELP
Select function XX

When indicated on display
- Press buttons -0- and -8- to select "Read Measuring Value Block" and
press -Q- button to confirm input.
Read measurin
g value block
Q
Enter displa
y group number XXX

When indicated on display
- Press buttons -0-, -0- and -1- to select "display group number 001" and
press -Q- button to confirm input.
Read Measuring Value Block 1
1
2
3
4

Indicated on display(1 to 4 display fields)
If engine speed decreases: - Make note of engine speed in display field 1.
- Spray intake system parts with engine leak detection spray in a
systematic manner.
- Check sprayed part of intake system for leaks, and eliminate error.
Pa
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jection s
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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