AUDI A4 1995 B5 / 1.G AEB Engine Readiness Codes

01-59


Readiness code

Readiness code, checking


Note:
The readiness code will be erased:

When Diagnostic Trouble Code (DTC) memory
is erased
When the Engine Control Module (ECM)
harness connector is disconnected (e.g. to
connect VAG 1598/22 test box)
When the battery is disconnected

Required special tools and test equipment
VAG 1551 Scan Tool (ST) with adapter cable
VAG 1551/3

Checking

- Connect VAG 1551/ VAG 1552 Scan Tool (ST)
and press buttons -0- and -1- to insert "Engine
Electronics" address word 01 (with ignition
switched on) Page 01
-7 .
Rapid data transfer
HELP

Indicated on display
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Select function XX
- Press buttons -0- and -8- to select "Read Measuring Value Block"
function 08, and press -Q- button to confirm input.
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01-60

Read Measurin
g Value Block
HELP
Input display group number XXX

Indicated on display
- Press buttons -0-, -8- and -6- to input display group number 86, and
press -Q- button to confirm input.
Read Measurin
g Value Block 86

1
2
3
4

Indicated on display (1-4 display fields)
Note:
The readiness code is generated as soon as only zeros ("0") are shown in
display field 1. - Check readiness code values in display field 1.
Specified value: 00000000
-
Press button to advance program sequence.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -6- to select "End Output" function 06, and press
-Q- button to confirm input.
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01-61
If the readiness code was not generated,
generate readiness code again Page 01
-62
.

- Check readiness code Page 01
-59
. If DTC
memory has been erased, or ECM has been
disconnected from B+, generate readiness code
again Page 01
-62
.
Explanation of 8-digit readiness code Readiness code is generated only when all display values = 0 1
2
3
4
5
6
7
8
Diagnosis
0 Three Way Catalytic Converter (TWC)
0 TWC heating (not applicable / always "0")
0 EVAP system and fuel tank leak detection test
0 Secondary Air Injection (AIR) system (not applicable / always "0")
0 Air conditioning system (diagnosis not applicable / always "0")
0 Oxygen Sensor (O2S) control
0 Oxygen Sensor (O2S) heating
0 Exhaust Gas Recirculation (EGR) system (not applicable / always "0")
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01-62

Readiness code, generating


Required special tools and test equipment

VAG 1551 Scan Tool (ST) with adapter cable
VAG 1551/3

Test requirements
No malfunctions stored in DTC memory
Engine not stopped (ignition not switched off)
during the test
Vehicle not moving
All electrical consumers switched off (coolant
fan must not run during test)

Test sequence

- Connect VAG 1551/ VAG 1552 Scan Tool (ST)
and press buttons -0- and -1- to insert "Engine
Electronics" address word 01 (with ignition
switched on) Page 01
-7 .
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01-63

Step 1: Check DTC memory Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -2- to select the "Check DTC Memory" function
02, and press -Q- button to confirm input.
No DTC reco
gnized

Indicated on display
If one or more DTCs are stored:
If no DTCs were recognized: - Repair cause of malfunction.
- Erase DTC memory.
- Stop engine, start engine again, and road test.
- Check DTC memory again and erase.
-
Press button to advance program sequence.
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01-64

Step 2: Erase DTC memory Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
When erasing DTC memory, the readiness code is also erased. - Press buttons -0- and -5- to select the "Erase DTC Memory" function
05, and press -Q- button to confirm input.
Rapid data transfer DTC Memor
y is erased

Indicated on display
-
Press button to advance program sequence.
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01-65

Step 3: Adaptation of throttle valve control
module to ECM Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -8- to select "Read Measuring Value Block"
function 08, and press -Q- button to confirm input.
Read Measuring Value Block
HELP
Input displa
y group number XXX

Indicated on display
- Press buttons -0-, -6- and -0- to input display group number 60, and
press -Q- button to confirm input.
Read Measuring Value Block 60
1
2
3
4

Indicated on display (1-4 display fields) - Press -4- button to select "Basic Setting" function 04 (adaptation of
throttle valve control module to ECM)
System in Basic Setting 60
1
2
3
4

Indicated on display (1-4 display fields) - Check specified values in display fields 3 and 4:
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01-66


Display fields

1 2 3 4
Display group 60: Adaptation of throttle valve control module to Engine Control Module (ECM)
Display
xxx
xxx
Idle
Part throt.
Full throt.
Decel
Enrich ADP.runs
ADP. OK
ADP.ERROR
Indicated Throttle valve angle Throttle valve actuator angle Operational status Adaptation status
Specified value --- --- Idle ADP. OK
If "ADP. ERROR" is indicated in display field 4:

- Check DTC memory Page 01
-15
.
If the specified value "ADP. OK" is indicated in
display field 4:

-
Press button to advance program
sequence.
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Step 4:

- Start engine and let run at idle.
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