check AUDI A4 1996 B5 / 1.G APB Engine Motronic Syst

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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01-102


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.
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01-104
If the specified value in display field 1:
"00000000" is obtained:

-
Press button.Rapid data transfer
HELP
Select function XX

Indicated on display (function selection)
If specified value is not reached: - Check DTC memory Page 01
-15
(No malfunction should be stored
in the DTC memory).
- Generate readiness code Page 01
-105
.
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01-106

Work step 1: Check DTC memory

- Connect Vehicle Diagnostic, Test and
Information system VAS5051 or VAG1551 scan
tool to vehicle and select control module for
engine electronics using "address word" 01
Page 01
-9 . The ignition is switched on.
Rapid data transfer
HELP
Select function XX

When indicated on display
- Press buttons -0- and -2- to select function "Check DTC Memory" and
press -Q- button to confirm input.
X DTC reco
gnized!

Number of stored DTCs or "No DTC recognized" will be indicated on
display.
If a DTC is stored:
If no DTC is stored: - Repair malfunction, erase DTC memory. Road test vehicle and then re-
check DTC memory as a control measure.
-
Press button.
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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:
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01-109


Display fields

1 2 3 4
Display group 060: Adaptation of throttle valve control module
Display xx % xx %
x
---
Indicated Throttle
valve angle
(angle
sensor 1) Throttle
valve angle
(angle
sensor 2) Adaptation step counter
Adaptation condition
Work area 0 - 100 % 0 - 100 %
0 - 8
ADP. runs
ADP. OK
ADP. ERROR
Specified
value 3 - 93 % 97 - 3 %
8
ADP. OK
Note:


During adaptation, adaptation step counter
must reach the number 8. (Some numbers
may be skipped). If "ADP. ERROR." is displayed:
Check DTC memory Page
01
-15
.
If specified value is not
obtained: Note, Page Page
24
-152
.
Note for display field 3:
During adaptation different digits are displayed in display field 3, which indicate the particular adaptation condition. It is not
important what the adaptation step counter (display field 3) displays during adaptation, rather that display field 4 displays the
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1
2
3
4
Note:
If test is not initiated or the display jumps from "Test ON" to "Test OFF"
slightly accelerate engine briefly, test will be repeated. - Check specified value in display field 4:
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01-111


Display fields

1 2 3 4
Display group 070: Diagnostic of EVAP canister purge regulator valve
Display xx % xx.x % xx %
Test ON
Indicated EVAP valve duty
cycle during
diagnosis Oxygen sensor
control deviation
during diagnosis Relative
Ground via
EVAP valve Diagnostic condition
Work
Range min.: 0 %
max.: 100 % min.: -25.0 %
max.: 25.0 %
Test OFF
Test ON
EVAP OK
EVAP n.OK
Abort
Specified
value xx % -5.0 to 4.0 %
xx - xx %
1)
EVAP OK
Note:



If "EVAP n. OK" is displayed: Check DTC
memory Page 01
-15
. Check EVAP canister
purge regulator valve -N80 Page 24
-134

1) A display appears only, if the diagnostic result occurred via deviation from the Idle Air Control (IAC) in a specified tolerance
range and not from deviation from the oxygen sensor control (e.g.: oxygen sensor 1 from EVAP canister). Display field 3 is
only indicated if there is a deviation.
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01-113

System in Basic Setting 71
1
2
3
4

When indicated on display
During test is "Test ON" displayed in display field 4. Continue to hold test
conditions until a diagnostic result is displayed in display field 4.
Note: - Check specified value in display field 4:
Test duration for tank leak test takes approximately 60 seconds.Should the diagnosis be repeated several times, open fuel filler cap
each time to release pressure in tank.
Pa
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