1997 AUDI A4 engine

01-245

Engine Control Module (ECM), coding


Notes:

During Engine Control Module (ECM)
identification, a 5-digit code must always be
displayed.
Coding is carried out with the VAG 1551 scan
tool.
If coding that corresponds to the vehicle is not
displayed or if the ECM has to be replaced, the
ECM must be coded as follows:

- Connect VAG 1551 scan tool page 01
-7 .
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -7- to select "Code Control Module" function 07.
Rapid data transfer
Q
07 - Code Control Module

Indicated on display
- Press -Q- button to confirm input.
Code control module QEnter code number XXXXX
(0-32000
)

Indicated on display
- Enter code number for vehicle and press -Q- button to confirm input.
Coding variations page 01
-247
.
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01-247
Engine Control Module (ECM), coding variations
Country/exhaust gas
Drive/auxiliary function
Transmission
Vehicle type
00 = ----------------- 0 = Front wheel drive without
traction control 0 = 5-speed manual
transmission 0 = --------------
----
01 = Vehicle with Exhaust Gas
Recirculation (EGR) 1 = Front wheel drive with traction
control 1 = ------------------ 1 = A4
02 = ----------------- 2 = All wheel drive without traction
control 2 = ------------------ 2 = --------------
----
03 = ----------------- 3 = ------------------ 3 = ------------------ 3 = --------------
----
04 = ----------------- 4 = ------------------ 4 = ------------------ 4 = --------------
----
05 = ----------------- 5 = ------------------ 5 = Automatic trans. 01V 5 = --------------
----
06 = ----------------- 6 = ------------------ 6 = ------------------ 6 = --------------
----
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01-258

Generating readiness code

Notes:

In order to generate the readiness code, a
"mixed city and highway" drive (short test) has
to be taken. A "mixed city and highway" drive is
understood as approx. 1-1/2 to 5 minutes at 80-
100 km/h (50-63 mph) with manual
transmission in 4th or 5th gear, or automatic
transmission selector lever in "D" position,
preferably in 4th gear.
If a malfunction is recognized and stored by the
engine control module during a "mixed city and
highway" trip, and/or the Malfunction Indicator
Lamp (MIL) is switched on, the brief test can be
interrupted by the technician and the
malfunction repaired according to the diagnostic
trouble code.
If the readiness code has to be generated, the
DTC memory should be checked (no faults
should be stored) and erased (readiness code
will be reset) before taking the "mixed city and
highway" trip.
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01-259

Step 1: Preparation

- Start engine and let idle.

- Connect VAG 1551 or VAG 1552 scan tool,
switch on printer and select address word 01 (
page 01
-7 )

- Check and erase DTC memory ( page 01
-
13
).

No malfunctions may be stored. If necessary:

- Repair malfunctions.

- Erase DTC memory.

- Stop engine and start again.

- Test drive and, as a check, check and erase
DTC memory again.

- After checking and erasing DTC memory, let
engine run at idle again.
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01-265

Engine Control Module (ECM), replacing


Notes:

By disconnecting the ECM, the permanent
voltage supply is disconnected and therefore
the learning values, DTC memory and
readiness code are erased.
If uneven idle occurs after the ECM is installed,
let the engine idle for a few minutes so that the
learning process can be carried out page 01
-
150
, Basic Setting, display groups 007 and/or
008.
If the engine control module is replaced, carry
out the following work steps in the specified
sequence.

- Switch ignition on.

- Connect VAG 1551 scan tool and operate until
control module identification is displayed page
01
-7 .
8D0906266 2.8l V6/2V MPI OBD2
D01
Codin
g 01051
WSC 06388

ECM identification and the coding are shown on the display.
- Print out ECM identification and compare coding to table of coding
variations page 01
-247
.
-
Press button.
Pa
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) - Multi
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pair&id=AUDI.B5.FU01.01.1