AUDI A6 1996 C5 / 2.G AHA Engine On Board Diagnostic Repair Manual

P1519 17927 Intake Camshaft Contr.,
Bank1
Malfunction 2 Dcy
- Check camshaft adjustment page 28
-29
P1522 17930 Intake Camshaft Contr.,
Bank2
Malfunction

Pa
ge 61 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-45

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1543 17951 Throttle Actuation Potentiometer
Signal too Low 2
Dcy - Check throttle drive and angle sensor
for throttle drive page 24
-136

P1544 17952 Throttle Actuation Potentiometer
Signal too High
P1545 17953 Throttle Pos. Contr.
Malfunction
P1558 17966 Throttle Actuator
Electrical Malfunction

P1559 17967 Idle Speed Contr. Throttle Pos.
Adaptation Malfunction
(Adaptation of throttle valve control module to engine
control module interrupted by application of
accelerator pedal or by starting engine.) Off
- Check adaptation of throttle valve
control module to Engine Control
Module (ECM) page 24
-150

P1560 17968 Maximum Engine Speed Exceeded Off
- Carry out engine mechanical repairs
as necessary
Pa
ge 62 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-46

Diagnostic
Trouble Code
(DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1564 17972 Idle Speed Contr. Throttle Pos.
Low Voltage During Adaptation
(Supply voltage under 10 V during adaptation of throttle
valve control module to engine control module.) Off
- Check voltage supply to ECM
page 24
-90

P1565 17973 Idle Speed Contr. Throttle Pos.
Lower Impact Not Attained
(Lower specification not attained during adaptation of
throttle valve control module to engine control module,
e.g., accelerator pedal cable incorrectly adjusted,
throttle body dirty, etc.) 2 Dcy
- Clean throttle body
- Check accelerator pedal cable
adjustment Repair Manual,
Fuel Supply System, Repair
Group 20 P1600 18008 Power Supply (B+) Terminal 15
Low Voltage Immed.
- Check voltage supply to Engine
Control Module (ECM) page
24
-90

Pa
ge 63 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-47

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1602 18010 Power Supply (B+) Terminal 30
Low Voltage Off
- Check voltage supply to ECM page 24
-
90

P1606 18014 Rough Road Spec Engine Torque ABS-
ECU
Electrical Malfunction Off
- Check ABS control module signal for
rough road recognition page 24
-174

P1612 18020 Electronic Control Module
Incorrect Coding
(Vehicle with automatic transmission is
coded for manual transmission.) Immed.
- Code ECM page 01
-12
Electronic Control Module
Incorrect Coding
(Vehicle with ASR is not coded for ASR) Off
Pa
ge 64 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-48

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1624 18032 MIL Request Sign. active Immed.
Repair Manual, 5 Spd. Automatic Transmission 01V,
Repair Group 01 - Check DTC memory for Transmission Control Module
(TCM) and correct malfunctions
P1626 18034 CAN-Bus
Missing Message from
Transm. Contr. 2 Dcy
- Check CAN-Bus page 24
-172
P1640 18048 Internal Contr. Module
(EEPROM)
Error 2 Dcy
- Replace ECM page 01
-68
P1681 18089 Contr. Unit Programming
Programming not Finished Immed.
- Replace ECM page 01
-68
P1690 18098 Malfunction Indicator Light
Malfunction Off
- Check wire from ECM to Malfunction Indicator Light
(MIL) page 01
-2
Note for DTC P1624/18032:
If this malfunction is detected by the Transmission Control Module (TCM), the MIL is switched on by the ECM. In this case,
the ECM stores the malfunction "MIL Request Sign. active" (DTC P1624/18032). After repairing the malfunction, erase DTC
memory of the ECM.
Pa
ge 65 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-49

Erase DTC Memory (scan tool function
05)


Required special tools and test equipment
VAG1551 Scan Tool (ST) with VAG1551/3
adapter cable

Test condition
Malfunction(s) repaired

Note:
If DTC memory has been erased, generate new
readiness code page 01
-73
.

Erasing

- Connect VAG1551/VAG1552 Scan Tool (ST)
and press buttons -0- and -1- to insert "Engine
Electronics" address word 01 (engine running at
idle) page 01
-8 .
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -2- to select "Check DTC Memory" function 02,
and press -Q- button to confirm input.
-
Press button to advance through program sequence until all stored
malfunctions have been displayed.
Pa
ge 66 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

Rapid data transfer
HELP
Select function XX

Indicated on display
Pa
ge 67 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-50

- Press buttons -0- and -5- to select "Erase DTC
Memory" function 05, and press -Q- button to
confirm input. Rapid data transfer DTC Memory is erased

Indicated on display
-
Press button to advance through program sequence.
Rapid data transfer
HELP
Select function XX

Indicated on display
Safety precautions for road testing vehicle page 24
-9 - Press buttons -0- and -6- to select "End Output" function 06, and press
-Q- button to confirm input.
- Road test.
- Initiate "Automatic Test Sequence" by pressing -0- button twice to
insert address word 00.
- Check readiness code page 01
-70
. If DTC memory has been
erased, or ECM has been disconnected, generate readiness code
page 01
-73
.
Pa
ge 68 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-51

Output Diagnostic Test Mode (DTM)
(scan tool function 03)


Notes:

The output Diagnostic Test Mode (DTM) can be
activated only with ignition switched on and the
engine not running.
The output DTM is interrupted if the engine is
started, or if a rotary pulse from the ignition
system is recognized.
When operating in the output DTM, the
individual output signals are actuated until the
program sequence is advanced by pressing the
button.

Output signals are checked by listening for the
sound of the component being actuated, or
feeling for mechanical evidence of actuation,
such as clicking, vibration, etc.
Without letting the engine run, briefly switch the
ignition off for approx. 20 seconds before
repeating the output checks.
During the entire output DTM sequence, the
electric fuel pump will run.
Pa
ge 69 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

The output DTM will be interrupted after 10
minutes.
Component locations page 24
-1
Pa
ge 70 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1