2000 AUDI A4 instrument cluster

01-14

01039
ECT Sensor-G2

Open/Short
circuit to B+
Short circuit to
Ground (GND)
Open circuit or short circuit between Engine Coolant
Temperature Sensor (ECT) -G2- and instrument
cluster
ECT sensor -G2- faulty- Trace malfunction Electrical Wiring
Diagrams, Troubleshooting & Component
Locations
- Replace -G2-.
01402
Data Wire from
Navigation

Incorrect signal
Open circuit in clock enable or data wire
Navigation/instrument cluster interface
malfunctioning
Malfunction caused by electromagnetic interference
inside and outside vehicle Repair Manual Radio, Telephone,
Navigation, Repair Group 97 - Check data wire for damage.
- Check causes for electromagnetic
malfunctions.
65535
Control Module
Malfunctioning
Instrument cluster faulty- Replace instrument cluster Page 90
-
1 .
Pa
ge 17 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

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
ge 18 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

Segment check of the multi-function display
and/or the LCD odometer.
Activation of the instrument cluster lights and
dimmer.
Coolant excess temperature test
Pa
ge 19 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

01-16

Notes:

The instrument cluster lighting test can only be
carried out with the lights on.
The coolant excess temperature test activates
the A/C compressor safety shut-off.

Initiating Output Diagnostic Test Mode

Note:
The units displayed are country specific.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -3- to select "Output Diagnostic Test Mode"
function 03.
Rapid data transfer
Q
03 - Output Diagnostic Test Mode

Indicated on display
- Press -Q- button to confirm input.
This will start the Output Diagnostic Test Mode for the analog
instruments (displays).
Output Diagnostic Test Mode Analog Indicators

Indicated on display
Pa
ge 20 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

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
ge 21 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

needle in motion, its movement will be
interrupted.
Pa
ge 22 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

01-18

-
Press button.Output Diagnostic Test Mode Instrument Cluster Warning Lights Test

Indicated on display
Activation of mini-check indicator lights
-
Press button.
Output Diagnostic Test Mode Seat Belt Warnin
g Light-K19

Indicated on display
Activation of seat belt warning light.
Note:
Depending on the model/equipment, the seat belt warning light will be
activated via the control module coding. This means that the warning light
will be inactive if this test is skipped.
-
Press button.
Output Diagnostic Test Mode Chime

Indicated on display
The chime is activated and sounds continuously.
-
Press button.
Pa
ge 23 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1

01-19

Output Diagnostic Test Mode Segment test

Indicated on display
Notes:
All indicators on the multi-function display and/or the LCD odometer
are cycled. All segments on the multi-function monitor light up and one bar
remains dark.
-
Press button.
Output Diagnostic Test Mode Switch and instrument li
ghtin
g

Indicated on display
The instrument cluster dimming is tested.
-
Press button.
Output Diagnostic Test Mode ECT Overheat Test

Indicated on display
The A/C compressor safety cut-out will be activated within approx. 5
seconds.
-
Press button.
Output Diagnostic Test Mode END

Indicated on display
This returns the scan tool to the "Select function XX" prompt. -
Press button to end Output Diagnostic Test Mode.
Rapid data transfer
HELP

Indicated on display
Pa
ge 24 of 74 Instrument cluster, On Board Dia
gnostic
(OBD
) (throu
gh M.Y. 1999
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.1