automatic transmission AUDI A4 1999 B5 / 1.G Brakes Output DTM 03 Workshop Manual

01-166

Electrical testing


If the On Board Diagnostic (OBD) sequence
does not provide any indication of the source of
the malfunction, work through all of the
electrical test steps.
If the OBD sequence identifies the source of the
malfunction, only carry out the test steps
recommended in the DTC table (specific
testing).

Test requirements
The "Automatic Test Sequence" was carried
out and it was determined that the
Transmission Control Module (TCM) and
Engine Control Module (ECM) only contain
DTCs relating to ABS/EDL.

- Connect the VAG1551 Scan Tool (ST) and
select the address word 00 with ignition
switched on;

- After completing electrical test, check and
erase DTC memories of Transmission Control
Module (TCM) and Engine Control Module
(ECM).
Pa
ge 20 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-182

Function test: Red brake warning symbol
Test step
VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified value
Corrective action
9

Continuation: Function of red
"brake system
malfunction"
symbol - Connect VAG1551 scan
tool and select address
word 03
- For vehicles with
automatic transmission and
high-line instrument cluster,
depress the brake pedal
and select a driving gear. The ABS indicator lamp
and the red "brake system
malfunction" symbol light
up. If the traction control
indicator light is installed
and OK, it also lights up. Repair Manual,
Electrical Equipment, Repair Group 90; instrument cluster.

- Malfunction in
instrument cluster
Pa
ge 37 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-199

DTC
Possible cause
Corrective action
Printed output from
VAG1551 Scan Tool
(ST)

00623
ABS / transmission
electrical connection

This malfunction only
occurs if vehicle is
equipped with ASR. Data is transferred between the ABS control
module -J104- and the Transmission Control
Module (TCM) via a single wire. For more information, see the section
"Systems related to ASR" page 01
-42

and the table "Control module versions"
page 01
-134
.

Manual transmission


ABS/EDL/ASR control module -J104-
incorrectly coded.
Short circuit to B+
Electrical Wiring Diagrams,
Troubleshooting & Component Locations - Check coding of ABS/EDL/ASR control
module -J104- page 01
-135
.
- Locate and repair short circuit.

Automatic transmission


ABS/EDL/ASR control module -J104-
incorrectly coded.
Open circuit or short circuit to Ground (GND)
in wiring between ABS/EDL/ASR control
module -J104- and Transmission Control
Module (TCM) -J217-.
Electrical Wiring Diagrams,
Troubleshooting & Component Locations - Check coding of ABS/EDL/ASR control
module -J104- page 01
-135
.
- Locate and repair open circuit or short
circuit.
Pa
ge 59 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-203

DTC
Possible cause
Corrective action
Printed output from
VAG1551 Scan Tool (ST)

01044
Control module incorrectly
coded

This malfunction only
occurs if vehicle is
equipped with ASR. Data is transferred between the ABS control
module -J104- and the Transmission Control
Module (TCM) via the CAN-bus. For more information, see the section
"Systems related to ASR" page 01
-42
and
the table "Control module versions" page
01
-134
.


The ABS control module (w/EDL) -J104- is
coded for a vehicle with manual
transmission. The vehicle is equipped with
automatic transmission. - Code the ABS control module (w/EDL) -
J104- for the correct transmission page
01
-135
.
01130
ABS operation
Implausible signal
- Replace the ABS control module (w/EDL) -
J104- after conferring with the product
department of your distributor or with the
responsible importer.
Pa
ge 63 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13