fuel AUDI A4 2000 B5 / 1.G Instrument Cluster OBD From Model Year 1999 Workshop Manual

01-1


Instrument cluster, On Board
Diagnostic (OBD) (through
M.Y. 1999)

General information


Instrument cluster technology
The Audi A4 instrument cluster is available in two
versions; the low-line version with "mini-check"
system and the high-line version with an LCD
multi-function display.
The mini-check system monitors the brake
system, Engine Coolant Temperature (ECT), fuel
level and engine oil pressure.
The multi-function display contains the following
functions:

Auto check system with radio station and
telephone displays
Ambient outside temperature display
On-board computer display
Transmission Range (TR) selector lever display
for automatic transmission
Pa
ge 1 of 74 Instrument cluster, On Board Dia
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)
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01-3

Note:
The descriptions in this Repair Manual reference
the VAS5051 Diagnostic Operation Center
(DOC) and the VAG1551 Scan Tool (ST).
The following Adaptations (adjustments) can be
carried out using the tool:

Adaptation of the fuel sensor characteristics
Adaptation of the fuel consumption display
Coding the language versions for the on-board
computer and Auto Check system.
Adaptation of the Service Reminder Indicator
(SRI)
Adaptation of the odometer after instrument
cluster replacement.
Pa
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01-13

DTC
Possible cause
Corrective action
VAG1551 scan tool
display
00667
Ambient-Temperature
Signal

Open/Short circuit
to B+
Short circuit to
Ground Vehicles without air conditioning:

Open circuit or short circuit
Outside air temperature sensor -G17-
faulty Vehicles without air conditioning:
- Trace malfunction Electrical Wiring Diagrams,
Troubleshooting & Component Locations
- Replace -G17-.
Vehicles with air conditioning:

Open circuit or short circuit
A/C control head -E87- faultyVehicles with air conditioning:
- Trace malfunction Electrical Wiring Diagrams,
Troubleshooting & Component Locations
- Carry out OBD of air conditioning system
Repair Manual, Heating & Air Conditioning, Repair Group 01

00771
Fuel Level Sensor-G

Open/Short circuit
to B+
Short circuit to
Ground
Open circuit or short circuit between
sender for fuel gauge -G- and
instrument cluster
Sender for fuel gauge -G- faulty- Trace malfunction Electrical Wiring Diagrams,
Troubleshooting & Component Locations
- Replace -G-.
Pa
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)
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01-15

Output Diagnostic Test Mode (scan tool
function 03)


Notes:

Output Diagnostic Test Mode may only be
carried out on a stationary vehicle with the
engine off.
Trace any faults identified by the Output
Diagnostic Test Mode, replace the instrument
cluster if necessary.

The function "Output Diagnostic Test Mode"
cycles all the control elements in the
instrument cluster sequentially, if they are
installed and coded.
Concurrent testing of the display ranges of all
the analog indicators (coolant temperature
gauge, tachometer, speedometer and fuel
gauge).
Activation of the mini-check indicator lights.
Activation of the seat belt warning lamp.
Activation of the chime.
Pa
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01-17
After pressing the -Q- button, the following tests
are run:

Coolant temperature gauge needle moves over
complete range
Tachometer needle moves over complete
range
Speedometer needle moves over complete
range
Fuel gauge needle moves over complete
range
The following preset values are displayed at the
end of the test:

Coolant temperature
display: 90 C (194 F)
Tachometer: 3000 RPM
Speedometer: 100 km/h (62
mph)
Fuel level: 1/2

Note:
If the ignition is switched on or off with any gauge
Pa
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01-28

Display group overview

Display
group Indicated on display
001 1 = Vehicle speed (kmh/MPH)
2 = Engine speed (RPM)
3 = Oil pressure switch 2 < min
002 1 = Odometer (km/mi)
2 = Fuel gauge (liters/gal)
3 = Outside temperature ( C/F) 003 1 = Engine coolant temperature (
C/F) 050 1 = Odometer (km/mi)
2 = Engine speed (RPM)
4 = Engine coolant temperature (
C/F)

Notes:

The display will always show the actual values
from the sensors. Since the instrument panel
displays filters the values, they may differ from
the actual values.
Pa
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01-30
Display group 002

Read Measuring Value Block 2

Indicated on display

820 km 41 ltr.
19.0 C







Outside Temperature
-40 to +70 C


Fuel level

0 - 100 ltr.


Odometer

Display group 003

Read Measuring Value Block 3

Indicated on display


85.0 C










Pa
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01-32

Adaptation (scan tool function 10)

Function 10 is used to initiate and store the
following changes:

Adaptation of fuel gauge display
Correction of the fuel consumption display
Coding of language versions for Auto Check
system
Adaptation of the Service Reminder Indicator
(SRI)
Setting the odometer after instrument cluster
replacement.
Individual functions are called up by entering the
appropriate adaptation channel number (see
adaptation table Page 01
-33
).
Pa
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01-33
Adaptation table Adaptation channel
Adaptation function
01 Adaptation of fuel gauge display Page 01
-35

02 Resetting SRI after service Page 01
-45

03 Adaptation of fuel consumption display Page 01
-39

04 Language versions of the multi-function display Page 01
-42

05 SRI - service interval for oil change (distance in km) Page 01
-48

06 SRI - service interval 1 (IN1) distance in km Page 01
-51

07 SRI - service interval 1 (IN1) time in days Page 01
-54

08 SRI - service interval 2 (IN2) time in days Page 01
-57

09 Adapting odometer reading Page 01
-60

M.y. 1998
Adaptation
channel Adaptation function
10 SRI Remaining distance until next oil change service interval after replacing instrument cluster
Page 01
-64

11 SRI Remaining distance until next service interval after replacing instrument cluster Page 01
-67

12 SRI Remaining time until next service interval after replacing instrument cluster Page 01
-70

30 Adaptation of fuel gauge sender Page 01
-73

Pa
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01-35

Adaptation of fuel gauge display Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -1- and -0- to select "Adaptation" function 10 and press -
Q- button to confirm input.
Adaptation
Q
Insert channel number XX

Indicated on display
- Press buttons -0- and -3- to insert channel 03.
- Press -Q- button to confirm input
Pa
ge 45 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
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)
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pair&id=AUDI.B5.EE01.01.1