sensor AUDI A4 1997 B5 / 1.G Instrument Cluster OBD From Model Year 2000 Workshop Manual

01-79


Instrument cluster with long
service life, On Board
Diagnostic (OBD) (from m.y.
2000)

General information


Technical features of the instrument cluster
The instrument cluster is equipped with a service
display which can process flexible data, that is,
the instrument cluster evaluates various vehicle
based service requirements on input quantities
such as driveability or oil consumption.
The long service life is capable of reproducing
the functions of the standard SRI, when the limits
are set correctly. The limits are variable (in U.S.
with set limits Table Page 01
-80
).
It is also possible to evaluate the oil temperature
sensor. Adaptation channels in the VAG On
Board Diagnostic (OBD) make this possible.
Pa
ge 1 of 99 Instrument cluster with lon
g service life, On Board Dia
gnostic
(OBD
) (from m.
y. 2000
)
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01-93
Diagnostic Trouble Code (DTC) table for instrument cluster

Notes:

The following table lists all malfunctions that can be recognized by the instrument cluster and printed out by the VAG1551
scan tool. The malfunctions are listed in order according to their 5-digit numbers.
DTC numbers appear only on the print-out.
Before replacing a component shown as faulty, check the wiring and connections to the component as well as the Ground
(GND) connections according to wiring diagram.
After repairs and function test of the system, DTC memory must always be checked again using the VAG1551 scan tool
and erased.
DTC memory stores all static and sporadic malfunctions: If a malfunction occurs and persists for at least 2 seconds, it is
identified as a static malfunction (outside temperature malfunction at least 60 seconds, coolant temperature sensor only
after at least 30 minutes with engine running). If a malfunction does not occur again, it is registered as sporadic. "/SP" will
appear at right on scan tool display.
When the ignition is switched on, all existing malfunctions are automatically re-classified as sporadic malfunctions and will
only register as static malfunctions if they still occur after testing.
Sporadic malfunctions which no longer occur during 50 driving cycles (ignition on at least 5 minutes, vehicle speed 30
km/h) are erased automatically.
Pa
ge 17 of 99 Instrument cluster with lon
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gnostic
(OBD
) (from m.
y. 2000
)
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01-94

VAG 1551 scan tool display
Possible causes
Corrective action
00562
Oil level thermal sensor -
G266-

Open circuit/short circuit to
B+
Short circuit to Ground
Implausible signal
Open circuit or short circuit
between oil level thermal sensor
-G266- and instrument cluster Oil level thermal sensor -G266-
faulty -G266- faulty Electronic part in sensor faulty- Locate malfunction using wiring diagram
- Repair open circuit
- Oil level thermal sensor -G266- faulty Replace -
G266-
00667
Outside temperature signal

Open circuit/short circuit to
B+
Short circuit to Ground
implausible signal (is
indicated incorrectly and
must be disregarded)
Open circuit or short circuit
between instrument cluster and
A/C control head -E87- A/C control head -E87- faulty
Repair Manual, Heating & AirConditioning, Repair
Group 01
- Locate malfunction using wiring diagram
- Repair open circuit
- A/C system OBD
00668
Vehicle voltage, terminal 30

Voltage supply too low
Battery was disconnectedOpen circuit or short circuit to a
control module or sensor - Perform automatic test sequence in order to
determine the control module responsible for the
DTC check voltage supply of malfunctioning
control module
- Locate malfunction using wiring diagram
Pa
ge 18 of 99 Instrument cluster with lon
g service life, On Board Dia
gnostic
(OBD
) (from m.
y. 2000
)
11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.2

01-95

VAG 1551 scan tool
display Possible causes
Corrective action
00771
Sender for fuel gauge -G-

Open circuit/short
circuit to B+
Short circuit to Ground
Open circuit or short circuit between sender for fuel
gauge -G- (Front Wheel Drive/All Wheel Drive) and
instrument cluster
Sender for fuel gauge -G- (Front Wheel Drive/All
Wheel Drive) is faulty - Locate malfunction using wiring
diagram
- Repair open circuit
- - Replace Sender for fuel gauge -
G- (Front Wheel Drive/All Wheel
Drive)
00779
Outside air temperature
sensor -G17-

Open circuit/short
circuit to B+
Short circuit to Ground
Open circuit or short circuit
Outside air temperature sensor -G17- faulty - Locate malfunction using wiring
diagram
- Repair open circuit
- Replace outside air temperature
sensor -G17-
01039
Engine Coolant
Temperature (ECT) sensor
-G2-

Open circuit/short
circuit to B+
Short circuit to Ground
Open circuit or short circuit between Engine Coolant
Temperature (ECT) sensor -G2- and instrument
cluster
Engine Coolant Temperature (ECT) sensor -G2-
faulty - Locate malfunction using wiring
diagram
- Repair open circuit
- Replace Engine Coolant
Temperature (ECT) sensor -G2-
Pa
ge 20 of 99 Instrument cluster with lon
g service life, On Board Dia
gnostic
(OBD
) (from m.
y. 2000
)
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01-115

Display group overview:

Display group
number Indicated on display
001 1 = Speed
2 = Engine RPM
3 = Oil pressure switch
4 = Time
002 1 = Trip odometer
2 = Fuel gauge
3 = Tank sensor
4 = Outside air
temperature
003 1 = Coolant temperature
010 1 = Channel 30
2 = Adaptation tank
sensor
3 = Channel 9
4 = Trip odometer
011 1 = Channel 4
Pa
ge 44 of 99 Instrument cluster with lon
g service life, On Board Dia
gnostic
(OBD
) (from m.
y. 2000
)
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01-118

Notes:

For an instrument cluster replacement, data
from display groups 10...15 must be printed out.
Measuring value blocks 125 and 126 indicate
the participants in the powertrain data-BUS.
Measuring value block 130 indicates the
participants in the comfort system databus.
Measuring value block 140 indicates the
participants in the information data-BUS
Display will always indicate the actual values
obtained from the sensors. The values which
appear on the instrument cluster are filtered
and may be different.
If the actual engine coolant temperature is
between 80 C and 100 C, instrument cluster
will always show 90 C.
Pa
ge 50 of 99 Instrument cluster with lon
g service life, On Board Dia
gnostic
(OBD
) (from m.
y. 2000
)
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01-120
Measuring value block 2

Read Measuring Value Block 2

Indicated on display:

6256 mi 43 l 82 Ohm
23.0 C



Outside air temperature
-40 to +70 C




Tank sensor
approx. 280 Ohm (empty) ... approx. 40 Ohm (full)

Fuel gauge

0 - 100 1


Display value of trip odometer

Pa
ge 52 of 99 Instrument cluster with lon
g service life, On Board Dia
gnostic
(OBD
) (from m.
y. 2000
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.2