set AUDI A4 1997 B5 / 1.G APB Engine Motronic Syst

01-6

Available functions

The prerequisites for selecting the desired
functions can be taken from the following table.
Address words and functions on VAG1551 scan tool
Ignition ON,
engine not running
Engine idling
Vehicle being driven
Address words
00 Automatic Test Sequence yes yes yes
01 Engine Electronics yes yes yes
Functions
01 Check Control Module Version yes yes yes
02 Check DTC Memory yes yes yes
03 Output Diagnostic Test Mode (DTM) yes no no
04 Basic setting yes yes yes
05 Erase DTC Memory yes yes yes
06 End Output yes yes yes
07 Code Control Module no no no
08 Read Measuring Value Block yes yes yes
Pa
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01-43

DTC
Description of malfunction
Corrective action
SAE
VAG


P1250 17658 Fuel Level
Too Low
4)
Repair Manual, Electrical Equipment, Repair Group 01
- Fill fuel tank and erase DTC memory
- Check DTC memory from instrument cluster.
4) The malfunction "Fuel Level too Low" will be stored if the fuel level in the tank is or was too low. The malfunction remains as
a static malfunction and will not be set a sporadic malfunction even if the customer fills the tank with fuel in the meantime.
Therefore it is possible to recognize malfunctions which have been stored due to lack of fuel e.g.: misfiring or malfunction
regarding oxygen sensor control.
Pa
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01-88

Basic setting


With the ignition on and engine not running,
the following operation can be performed in
the "Basic setting" mode (function 04):

Adaptation of throttle valve control module to
ECM Page 24
-146


Vehicles with automatic transmission:
Adaptation of kick down function of accelerator
pedal position sensor to ECM Display group
63 ( Page 24
-166
)

With the engine running, the following
operations can be performed in the basic
setting mode "Function 04":

Learning process (adaptation) for oxygen
sensor control every display group

Troubleshooting by targeted activation and
deactivation of oxygen sensor control display
group 99 (Observe note on page Page 24
-
81
).
Pa
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01-90

- Press buttons -0- and -4- to select function
"Basic Setting" System in Basic Settin
g
04 - Basic Settin
g

Indicated on display
- Confirm entry by pressing -Q- button.
System in Basic Setting Input displa
y group number XXX

Indicated on display
Note:
Display Group 000 is used here as an example to illustrate the procedure.
(000 is to select Display Group 000)
Note:
When the display group is selected the EVAP valve is closed and the air
conditioner compressor is switched off. - Select required display group number from the Display Group
Overview in "Read Measuring Value Block" section.
- Press buttons -0- three times.
System in Basic Settin
g
Q
Input display group number
000

Indicated on display
- Confirm entry by pressing -Q- button.
System in basic setting 0

Indicated on display
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01-91

Display group 000 (indicated values decimal)

Engine running at idle (Coolant Temperature not less than 80 C)
1 2
3 4
5 6
7 8
9 10
Display fields
Specification Represents





Adaptation value of mixture formation, bank 2 108 - 148 -4 to 4%





Adaptation value of mixture formation, bank 1
108 - 148
-4 to 4%




Control value of mixture formation bank 2
(If out of specification perform road test) 122 - 136 -4 to 4%




Control value of mixture formation bank 2
(If out of specification perform road test)
122 - 136
-4 to 4%



Adaptation value torque loss at idle 124 - 140 -3 to 5%



Idle torque
126 - 135
-1.5 to 1.5%


Throttle valve angle 1 - 7 0.4 to 2.75%


Engine speed (idle speed)
77 - 83
770 - 830 RPM

Engine load (without consumers) 21 - 34 15 - 26%
Engine Coolant Temperature (requirement for basic setting)
177 - 203
85 - 105 C
1) Up-to-date specifications:
Pa
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01-100

The readiness code will be reset to "1 1 1 1 1
1 1 1" if:

The DTC memory was erased
A new Engine Control Module was installed
If the voltage supply has been disconnected
from the Engine Control Module (ECM)
In this case the readiness code must be
generated Page 01
-105
.
During driving operation in various load
conditions, exhaust relevant tests are performed
by the control module within a "short trip" and
readiness code is generated on its own. In this
case, however, concluding control possibilities
are not available, meaning that it will not be
indicated whether all positions of the readiness
code are set to "0."
Pa
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01-102


Display fields

1 2 3 4
Display Group 086: Readiness code
Display
0 0 0 0 0 0 0 0 X X X X X X X X X X X X X X X X
X X X X X X X X
Indicated
Ready-bits
completed tests Cycle-Flags
Performed cycles Cycle-Flags
Performed cycles Cycle-Flags
Performed cycles
Work area
1 = not completed
0 = completed 1 = not completed
0 = completed 1 = not completed
0 = completed 1 = not completed
0 = completed
Specified value
0 0 0 0 0 0 0 0 X X X X X X X X X X X X X X X X X X X X X X X X
Note:
Readiness code significance on next pages Note for display field 1:
This display field indicates which diagnosis was checked last after the DTC memory was erased or if the control module was
replaced. After erasing the DTC memory, all values that can be checked will be reset to 1, after successful testing these
values will be reset to 0.
Pa
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Display 1 = not ready

8 = Exhaust Gas Recirculation (EGR) system (not applicable/always "0")
Note:
The readiness code is only set if all position are displayed with "0."
Pa
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01-107

Work step 2: Erase DTC Memory

Test requirements

Ignition switched on
Rapid data transfer
HELP
Select function XX

When indicated on display
Note:
When DTC memory is erased, readiness code is reset and must therefore
be re-generated. - Press button -0- and -5- to select function "Erase DTC Memory" and
press -Q- button to confirm input.
Rapid data transfer DTC memor
y is erased

When indicated on display
-
Press button.
Pa
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01-108

Work step 3: Adaptation Throttle Valve
Control Module to Engine Control Module
(ECM)

Test requirements

Ignition switched on.
Rapid data transfer
HELP
Select function XX

When indicated on display
- Press buttons "04" for the function "Basic Setting" and press Q button
to confirm input.
System in Basic Settin
g
Q
Input displa
y group number XXX

When indicated on display
- Input "060" for "display group number 60" and press Q button to
confirm input.
System in Basic Setting 60
1
2
3
4

When indicated on display
- Check readiness code in display field 3 and 4:
Pa
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