AUDI A4 2001 B5 / 1.G 01V Transmission OBD Workshop Manual

01-34


On Board Diagnostic (OBD),
initiating

Additional information

Audi A4 Repair Manual, 5 Spd. Automatic
Transmission 01V,
Electrical Wiring Diagrams, Troubleshooting &
Component Locations
Parts catalog

Safety precautions


If special testing equipment is required
during test drive, note the following:

WARNING!

Always secure test and measuring
instruments to the rear seat and have it
operated by a second person from that
location.
If test and measuring equipment is operated
from the passenger seat, the passenger-side
airbag could be activated in case of an
accident and could lead to injury to the
person sitting there.
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To reduce the risk of personal injury and/or
damage of electric and electronic
components, always observe the following:

Always switch the ignition off before connecting
or disconnecting testers or measurement tools.
It is possible that the control module will
recognize a malfunction and store a DTC during
some tests. After completing all tests and
repairs, check DTC memory and erase the
memory.
Always switch ignition off before disconnecting
and connecting the battery to avoid damaging
the transmission control module.
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01-36

Vehicle Diagnosis, Measuring and
Information System VAS 5051 or V.A.G
1551 scan tool, connecting and
selecting functions


Test requirements

Selector lever in "P" position and parking
brake applied.
Vehicle voltage supply OK
Power supply and fuses for respective
system OK

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

Ground (GND) connections and Ground
point for transmission OK

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

-
Check Ground connections for corrosion and
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damage and repair if necessary.

- Check battery Ground (GND) strap and Ground
strap between battery and transmission.
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- Switch ignition off.

For vehicles up to m. y. 2000

- The Data Link Connector (DLC) is located behind the cover in the rear
ash tray (center console) for vehicles up to m. y. 2000
- Open rear ashtray (center console) and remove cover for DLC.

- Connect VAS5051 tester to vehicle with VAS5051/1 diagnostic cable.
Alternately, V.A.G1551 Scan Tool can also be used, using VAG1551/3
adapter.
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For vehicles from m. y. 2000

CAUTION!
Note:
The following description applies to the V.A.G 1551 Scan Tool. For the
Vehicle Diagnosis, Measuring and Information System VAS 5051 please
refer to the operating instructions. - The Data Link Connector (DLC) is located below the kneebar left of the
steering wheel. for vehicles up to m. y. 2000
- Connect VAS 5051 tester to vehicle with VAS 5051/1 diagnostic cable.
Alternately, V.A.G 1551 Scan Tool can also be used, using VAG
1551/3 adapter.
When performing road tests with testers and measuring
equipment, such equipment must only be operated from the rear
seat. Observe all safety precautions listed on page 01-34
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01-39

VAG - On Board Dia
gnostic HELP
1 - Rapid data transfer2 - Blink code output

Indicated on display
1)
1) Operating modes 1 and 2 are displayed alternately
Notes:
Scan tool V.A.G 1551 operating instructions. Get additional operating instructions by pressing the HELP key of
V.A.G 1551. Use the key to advance within the program sequence. An automatic check (keys 00) can be done in operating mode 1
"Rapid data transfer". This way all vehicle control modules will be
checked automatically.
- Switch on ignition.
- Switch on printer with the Print key (indicator lamp in key lights up).
- Press key 1 for "Rapid data transfer" mode.
Rapid data transfer
HELP
Enter address word XX

Indicated on display:
- Press keys 0 and 2. (Enter the address word "transmission electronics"
with 02.)
Rapid data transfer
Q
02 Transmission electronics

Indicated on display:
- Press Q button to confirm entry.
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8D0927156BT AG5 01V 2.81V USA 1416 Coding 00002
WSC 00000

Appears on display:
The control module identification is displayed:
Control module identification
Depending on the software version, the control module may indicate a
different control module identification as shown in this example. Allocation
of control module Parts catalog.
8D0927156BT: Part numberAG5 01V: 5-speed automatic transmission 01V2.8l 5V: Engine version USA: (country), USA and CANADA1416: 14 = program version; 16 = data versionCoding 00002: Coding page 01
-180
WSC 00000: Dealer number of V.A.G 1551, with the last coding was
performed
Control module does not answer!
HELP

Indicated on display:
- By pressing the HELP key, a list of possible malfunction is printed out.
- After eliminating the possible causes of malfunctions, enter address
word 02 for "transmission electronics" and confirm.
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If again "Control module does not answer!"
appears: Control module does not answer!
HELP

Indicated on display:
Check control module voltage supply.
Electrical Wiring Diagrams, Troubleshooting & Component Locations - Perform test step 1 page 01
-273
, Electrical check.
- Check wiring connections to diagnostic connectors - Replace control module if necessary
Location and removing and installing of control module page 01
-
273
, item 1
-
Press key.
Rapid data transfer
HELP
Select function XX

Indicated on display:
- After the HELP key is pressed, a list of possible functions is printed out.
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List of selectable functions


Page
01
- Check control module version
On Board Diagnostic (OBD),
initiating
Page 01
-34

02
- Check DTC memory Page
01
-43

03
- Output Diagnostic Test Mode Page
01
-163

05
- Erase DTC memory Page
01
-178

06
- End output
07
- Code control module Page
01
-180

08
- Read measured value block Page
01
-186

Disregard functions, which can be printed out by
pressing the HELP key.

- After checking a function the V.A.G 1551 returns
to the following start position: Rapid data transfer
HELP
Select function XX

Indicated on display:
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