display AUDI A4 1998 B5 / 1.G AC System On Board Diagnostic Repair Manual

01-55

Erase DTC Memory (function 05)


Requirements

DTC Memory checked

Erasing DTC memory

-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -5-.
Rapid data transfer
Q
05 - Erase DTC Memor
y

Indicated on display
- Press -Q- button to confirm input.
Rapid data transfer
Q
DTC Memor
y is erased!

Indicated on display
-
Press button.
Attention!DTC Memor
y is not interro
gated

Indicated on display
Notes:
If display appears as shown, check DTC memory and follow test
procedures carefully page 01
-18
.
If ignition was switched off between "Check DTC Memory" and "Erase
DTC memory," the memory is not erased. Check DTC memory once
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01-56

End output (function 06)


Requirements:

DTC Memory checked
Malfunctions repaired
Basic setting performed
DTC memory erased
A/C control head coding confirmed

Ending output

-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -6-.
Rapid data transfer
Q
06 - End Output

Indicated on display
- Press -Q- button to confirm input.
Rapid data transfer
HELP

Indicated on display
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01-57

Code Control Module (function 07)


A/C control head -E87- coding, vehicles 1996

Notes:

A/C control head coding 1997 page 01
-
59
.

A/C control head coding 1998 page 01
-
61
.
A/C control head -E87- coding shows market
application, compressor type and engine type.

Notes:

Zexel A/C compressors are installed from start
of production. During m.y. 1996, Nippondenso
type compressors are installed as a running
change. These compressors are not equipped
with A/C speed sensor G111.
Each time A/C control head -E87- is coded,
basic setting must be performed page 01
-
52
.

If a the display of a newly installed A/C control
head -E87- flashes after switching ignition on
(for approximately 2 minutes), code the control
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head and execute basic setting.

- Connect Scan Tool VAG1551 or 1552 in
operating mode -1-, enter address word 08 "A/C
Heating Electronics" and move forward in
program until "select function XX" appears in the
display.

- Switch on printer by pressing the PRINT button
(indicator lamp in button comes on).
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01-58

Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -7-.
Rapid data transfer
Q
07 - Code Control Module

Indicated on display
- Press -Q- button to confirm input.
Code Control ModuleEnter code number XXXXX

Indicated on display
Coding m.y. 1996:
Note:
Coding example, m.y. 1996: 0 0 1 6 2
0 = open
0 = open
1 = compressor w/o Compressor Speed Sensor -G111-
(0 = compressor with -G111-) -
Press button.Code
Market
Compressor
Engine
00062
USA/CDN
Zexel
6-cylinder gasoline
00162
USA/CDN
Nippondenso
6-cylinder gasoline
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01-60

CAUTION!

Part numbers are for reference only.
Always check with your Parts Dept. for the
latest information.
Coding example:

- Enter code "00062" by pressing applicable
buttons on key pad of VAG1551.
Code Control ModuleEnter code number 00062

Indicated on display
Notes: - Press -Q- button to confirm input.
- Perform basic setting page 01
-52
.
Nippondenso A/C compressors must have A/C control head Part No.
index "H" installed to allow coding "00162." If an unrecognized code is entered in a control head, it is suppressed
and coding "00042" (4-cyl. gasoline engine USA) is then stored. When replacing an A/C control head, always refer to the most recent
parts information.
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01-61

Part
number Comments
8L0 820
043 after
D For all vehicles up to m.y. 98 without
radio navigation system up to VIN
199999 of m.y. 1999 (lighting
indirectly activated via terminal 58s).
8D0 820
043 K or L Version with only one display (for
vehicles with radio navigation
system up to VIN 199999 of m.y.
1999)
8D0 820
043 after
M Version with only one display (for
vehicles as of VIN 200000 of m.y.
1999)

A/C control head -E87- (with one display),
coding table vehicles 1998
Notes:

A/C control head coding 1996 page 01
-
57
.

The following coding table is only valid for A/C
control heads with part number 8D0 820 043
after index "K." Additional coding tables and
coding A/C control head -E87- page 01
-57
.
A/C control heads -E87- with the part number
8D0 820 043 after index "K" have only one
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display, they are installed in the following
vehicles:

in vehicles with radio navigation system
(implemented gradually in m.y. 1998)
in vehicles with radio navigation system after
VIN 200000 of m.y. 1999
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