1999 AUDI A4 display

01-260

Step 2: System readiness checking and
creating

- Select VAG 1551 "Read Measuring Value Block"
function 08, display group 29 page 01
-249
.
Read measuring value block 29 1 2 3 4

Display shows display fields 1 through 4. Specified values:
Display field 1: 111_01_1 (readiness code)Display field 2: 00000000 (trip status display)Display field 3: 0Display field 4: 0
-
Press button.
Read measuring value block Input displa
y group number XXX

Indicated on display
- Push buttons -0-, -0- and -1- to input display group number 001.
- Press -Q- button to confirm input.
Read measuring value block 1 1 2 3 4

Display shows display fields 1 through 4.
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01-261

- Check display fields 1 and 3:

Display
field Designation
Specified
value
1 Coolant
temperature Greater than
70 C
3 Altitude display Less than 48

Note on display field 1:

If the displayed value is less than 70 C, let the
vehicle warm up until at least 70 C coolant
temperature is attained.
Note on display field 3:
If the displayed value is greater than 48
(corresponds to an altitude of approx. 1800 m) a
diagnosis of the exhaust return can not be
conducted due to altitude. Setting the readiness
code at this altitude is not possible.
If specified values are attained Step 3
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01-263

Step 4: Checking readiness code

- Select VAG 1551 "Read Measuring Value Block"
function 08, display group 29 page 01
-249
.
Read measuring value block 29 1 2 3 4

Display shows display fields 1 through 4. Specified values:
Display field 1: 000_00_0 (readiness code)Display field 2: 111_01_1 (trip status display)Display field 3: 0Display field 4: 0
-
Press button.
- Press buttons -0- and -6- to select "End Output" function 06, and press
-Q- button to confirm input.
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01-264
If, during regeneration of the readiness code, the
trip status display is set to "1" but the
corresponding readiness code display is not set
to "0" the diagnosis was carried out but not
recognized as OK by the ECM.
In this case, DTC memory should be checked for
malfunctions and/or to carry out a selective
diagnosis:

- For three way catalytic convertor diagnosis
(bank 1 and bank 2), also check display groups
035, 036 and 044.

- For EVAP system leak diagnosis, also check
display group 030.

- For heated oxygen sensor diagnosis, also check
display groups 032, 033, 034, 041, 042 and 043.

- For oxygen sensor heating diagnosis, also
check display group 040.

- For Exhaust Gas Recirculation (EGR)
throughput diagnosis, also check display group
017.
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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.
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Rapid data transfer
HELP
Select function XX

Indicated on display
- Switch ignition off.
Pa
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