lock AUDI A4 1998 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
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01-67

DTC
Description of
malfunction
Corrective action
SAE
VAG


P1569 17977 Cruise control switch
Incorrect signal
Repair Manual, Electrical Equipment, Repair Group 01, On Board
Diagnostic for CCS
- Check switch for Cruise Control System (CCS)
P1570 17978 Control Module Locked
Repair Manual, Electrical Equipment, Repair Group 01, On Board
Diagnostic of immobilizer
- Perform adaptation for immobilizer to ECM
P1579 17987 Idle Speed Contr.Throttle
Pos.
Adaptation not started - Perform adaptation of throttle valve control module while maintaining test
requirements Page 24
-146

P1600 18008 Power Supply (B+)
Terminal 15
Low Voltage - Check voltage supply for Engine Control Module (ECM) Page 28
-32
P1602 18010 Power Supply (B+)
Terminal 30
Low Voltage
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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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01-97

Read Measuring Value Block


Test requirements

Coolant temperature at least 80 C

Electrical consumers switched off (radiator
fan must not run during the check)
A/C switched off

- Connect vehicle diagnostic, testing and
information system VAS 5051 or VAG1551 scan
tool and select engine electronics control
module by entering address word "01" Page 01
-9 . When doing this the engine must be
idling.
Rapid data transfer
HELP
Select function XX

Indicated on display:
- Press buttons -0- and -8- to select function "Read Measuring Value
Block" and confirm entry with -Q- button.
Read Measuring Value Block Input displa
y group number XXX

Indicated on display
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01-98

- Input relevant Display Group number (3 figures)
and confirm entry by pressing -Q- button.

Note:
The display group number required is indicated
in the instructions for testing functions and
components given in the relevant sections of this
Manual. Read Measuring Value Block 0 1
2
3
4
5
6
7
8
9
10

Indicated on display for display group 000:
Note:
To change to another display group proceed as follows: Display group
VAG1551 scan tool
VAS5051
tester
Higher Press button 3
Press button
Lower Press button 1
Press button
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01-99

Readiness code

The readiness code is a 8 digit display in
measuring value block 086, display field 1. Each
of the 8 digits is assigned to a specific exhaust
related system.
If the function of these systems is checked via a
test by On Board Diagnostic (OBD), which is
successfully completed, then the position
assigned to this system will be switched from "1"
to "2." This occurs regardless of whether the test
is indicated as "OK" or "not OK" as long as the
test is successfully completed.
If a test is completed, but indicated as "not OK",
a DTC will be stored in the DTC memory. Check
DTC memory Page 01
-15
.
When the readiness code is generated after a
successfully completed test, "00000000" will be
displayed. (Measuring value block 086, display
field 1).
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01-101

Readiness code, checking


Test sequence

- Connect vehicle diagnostic, testing and
information system VAS5051 or VAG1551 scan
tool to vehicle and select Control module for
engine electronics "Address Word" 01 Page
01
-9 . The ignition must be switched on.
Rapid data transfer
HELP
Select function XX

When indicated on display
- Press buttons -0- and -8- to select "Read Measuring Value Block" and
press -Q- button to confirm input.
Read Measurin
g Value Block
Q
Input displa
y group number XXX

When indicated on display
- Press buttons "086" for "display group number 086" and press -Q-
button to confirm input.
Read Measuring Value Block 86
1
2
3
4

When indicated on display
- Check readiness code in display field 1

Specified value: 0 0 0 0 0 0 0 0
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01-112
If the specified value "EVAP OK" is reached:

- Press -C- button

Work step 5: Diagnosis of tank leak test

Note:
This diagnostic is locked the first 230 seconds
after engine is started.

Test requirements

Engine at idle
Coolant temperature greater 85 C (Display
group 4, display field 3)

Intake air temperature less 95 C (Display
group 4, display field 4)
System in Basic System
Q
Input displa
y group number XXX

When indicated on display
- Press buttons -0-, -7- and -1- to select display group number "071" and
press -Q- button to confirm input.
Pa
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