engine AUDI A4 1999 B5 / 1.G APB Engine Motronic Multiport Fuel Injection System Servising User Guide

24-23

Procedure after interrupting voltage
supply


Note:
At the first learning (adaptation) phase during the
"Engine-Basic Setting" the engine might run a
little rough at idle and bucks/jerks a little while
driving.

Required special tools and test equipment

Work procedure
Carry out the following work after the voltage was interrupted:
VAS 5051 with VAS 5051/1
orVAG1551 with VAG1551/3B
- Check DTC memory and erase if necessary Page 01
-15
.
- Generate new readiness code Page 01
-105
.
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24-24

Motronic Engine Control Module (ECM) -
J220, replacing


Note:
When the engine control module is disconnected
the learned values are erased but the contents of
the DTC memory remain intact.

Required special tools and test equipment

Removing
VAS 5051 with VAS 5051/1
orVAG1551 with VAG1551/3B
- Connect vehicle Diagnostic, Test and Information System VAS5051 or
VAG1551 scan tool to vehicle and select control module for engine
elcectronics "Adress word" 01 Page 01
-9 . The ignition must be
switched on.
8D0907551.. 2.7L V6/5VT
G 0002
Codin
g 06711
WSC 06388

Indicated on display: e.g. ECM identification on VAG1551
- Always display control module identification and print out Page 01
-
13
.
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24-25

- Compare coding with coding variation table
Page 01
-93
.

- Switch ignition off.

- Pull rubber gasket forward.

- Remove plenum cover forward.

- Remove cover for E-box (in plenum chamber).

Installing
Installation is performed in the reverse sequence. However note the
following:
Note:
At the first learning (adaptation) phase during the "Engine-Basic Setting"
the engine might run a little rough at idle and bucks/jerks a little while
driving. - Carefully lever off the retainer bar with a screwdriver -arrow-.
- Release connectors on engine control module and disconnect
connectors.
- Remove engine control module.
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24-26

Important Note:
After installing new engine control module, carry
out the following operations:
- Check DTC memory and erase if necessary
Page 01
-15
.
- Perform adaptation of Throttle Valve Control
Module -J338 Page 24
-146
.
- Observe notes for coding new engine control
module Page 01
-93
.
- On vehicles with cruise control (recognizable at
steering column switch), activate cruise control
function in the engine control module.

Repair Manual, Electrical Equipment, Repair
Group 01

- On vehicles with automatic transmission carry
out adaptation for Kick-Down switch Page 24
-
166
.
- Generate readiness code Page 01
-105
.
- Perform adaptation of immobilizer to engine
control module

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Repair Manual, Electrical Equipment, Repair
Group 01, On Board Diagnostic of Immobilizer, Adaptation after replacing engine control module


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24-27

Idle speed, checking


Test conditions

No leaks in exhaust system
Coolant temperature at least 80 C

Electrical consumers switched off (radiator
fan must not run during the check)
A/C switched off
Pressure gauge not connected
Selector lever in position P or N (vehicles
with automatic transmission)

Checking idle speed

Notes:
The idle speed cannot be adjusted.
The idle speed is tested during the basic setting
of the engine.
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During the basic setting of the engine the A/C
compressor is automatically switched off and
the EVAP canister purge regulator valve is
closed.
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24-28

- Check DTC memory Page 01
-15
. The DTC
memory must be clear. If necessary, repair any
malfunctions and erase the DTC memory.
Switch off the engine, then start up again. Take
vehicle for a test drive and check DTC memory
again to make sure it is clear.

- Run engine at idle speed.

CAUTION!

The electric radiator fan should not be
running. Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -4- to select function "Basic Setting" and confirm
entry with -Q- button.
Basic settin
g
Input displa
y group number XXX

Indicated on display
- Press buttons -0- -5- and -6- to select "Display group number 056" and
confirm entry with -Q- button.
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24-29
Notes:
System in Basic Setting 56
1
2
3
4

Indicated on display: (1 - 4 display zones) - Check whether the engine speed shown in display field 1 (actual
engine speed) is within the specified tolerance range (750 - 850 RPM).

Display fields

1 2 3 4
Display Group 056: Idle speed stabilization with engine idling at operating temperature
Display
xxx RPM
xxx RPM x.x % xxxxxxx
Indicates
Engine speed (actual)
Engine speed
(specified) Idling speed control-
torque change Operating conditions
Specified
value 750 -850 RPM
800 RPM x.x % 0 0 0 0 0
Note
If readout does not match
Specified value Page 24
-31

Relevance of figures
Page 24
-32

The value shown in display field 1 is the actual engine speed.
The value shown in display field 2 (specified engine speed) is a theoretical value calculated by the engine control module.
See note on next page:
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24-30

When the engine is idling the engine control
module tries constantly to adjust the actual
engine speed so that it matches the specified
value.
This means that the actual engine speed when
idling should always be approximately the same
as the specified engine speed.
Display fields 3 and 4 provide additional
information which is not relevant when checking
the idle speed.

-
Press button.

- Press buttons -0- and -6- to select function "End
Output" and confirm entry with -Q- button.

- If readout does not match Specified value, check
DTC memory again.

- If DTC memory was erased, generate readiness
code Page 01
-105
.
Pa
ge 35 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
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11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1