instrument cluster AUDI A4 2000 B5 / 1.G Instrument Cluster Location Diagram Through Model Year 2000 User Guide

90-35


17 - Transponder 2
18 - CAN high speed (powertrain) (high +)
19 - CAN high speed (powertrain) (low -)
20 - CAN high speed (powertrain) (screen)
21 - ABS
22 - CAN low speed (comfort) (high +)
23 - CAN low speed (comfort) (low -)
24 - CAN low speed (comfort) (screen)
25 - Engine lid
26 - not occupied
27 - Belt buckle
28 - K-wire
29 - Outside temperature -input
30 - not occupied
31 - Selector range display
32 - not occupied
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90-36


Gray 32-pin multi-pin connector for multi-function display
1 - Menu selection switch (menu)
2 - Menu selection switch (out A)
3 - Menu selection switch (out B)
4 - Menu selection switch (Enter)
5 - CAN high speed display (high +)
6 - CAN high speed display (low -)
7 - CAN high speed display (screen)
8 - Passenger door contact
9 - Right rear door contact
10 - Left rear door contact
11 - Enable
12 - Clock
13 - Data
14 - Brake light
15 - Windshield washer fluid level
16 - Rear lights/low beams
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90-37


17 - Left board computer
18 - Right board computer
19 - Board computer, reset
20 - not occupied
21 - not occupied
22 - not occupied
23 - Button branch 1 navigation
24 - Button branch 2 navigation
25 - Button branch Telematic
26 - not occupied
27 - not occupied
28 - not occupied
29 - not occupied
30 - not occupied
31 - not occupied
32 - not occupied
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90-38

Engine speed signal, checking

If a malfunction of the RPM display at tachometer
is detected, signal at the tachometer must be
checked.

- Connect VAS5051 tester or VAG1551 scan tool
Page 01
-241
.

- Read Measuring Value Block Page 01
-
114
.

- Select display group number 001 and perform a
road test.
If the speed appears on the VAG1551 Scan Tool
display but not via the speedometer in instrument
cluster, the instrument cluster is faulty and must
be replaced.
If no speed is indicated on the VAG1551 Scan
Tool display either, the signal must be checked
at multi-function connection at instrument
cluster.

- Remove instrument cluster Page 90
-27
.
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90-39

- Connect VAG1598 tester with VAG1598/25
adapter to the blue 32-pin connector.

- Perform an acoustic continuity check of the
sensor and wire using the VAG1526 multimeter
between terminal 28 and socket 9 (load Ground
(GND))
Test
The beep signal of the resistance tester must
switch on and off several times while the vehicle
is rolled slightly forward and backward (approx.
1m)
If the test is not OK, the wire connection to speed
sender must be checked.

- Check wire connection according to wiring
diagram.

Electrical Wiring Diagrams, Troubleshooting &
Component Locations If the wire connection is OK, the speed sender
must be replaced.
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90-40

Signal from sender for fuel gauge -G-,
checking

If a malfunction of the sender for fuel gauge is
detected at instrument cluster, check if the signal
at the instrument cluster is OK.

- Connect VAS5051 tester or VAG1551 scan tool
Page 01
-241
.

- Read Measuring Value Block Page 01
-
114
.

- Select display group number 2.
If the fuel level appears on the VAG1551 scan
tool display but not via the fuel gauge, the
instrument cluster is faulty and must be
replaced.
If no speed is indicated on the VAG1551 scan
tool display either, the signal must be checked at
multi-function connection at instrument cluster.

- Remove instrument cluster Page 90
-27
.

- Connect VAG1598 tester with VAG1598/25
adapter to the blue 32-pin connector.
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90-41

- Measure resistance (sensor resistance) between
terminal 5 and 7 using VAG1526 multimeter.
Specified values:
Fuel tank empty: approx. 280 Ohm (Front Wheel
Drive/All Wheel Drive)
Fuel tank full: approx. 40 Ohm (Front Wheel
Drive/All Wheel Drive)

- If the specified values are not reached, check
wire connection between instrument cluster and
the sender for fuel gauge -G- (Front Wheel
Drive/All Wheel Drive) according to wiring
diagram.

Electrical Wiring Diagrams, Troubleshooting &
Component Locations
- If there is neither an open circuit nor a short
circuit, check the sender for fuel gauge -G-
(Front Wheel Drive/All Wheel Drive)

- Sender for fuel gauge, checking

Repair Manual, Fuel Supply System, Repair
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Group 20; sensor for fuel gauge, checking


- If the specified values are met, the malfunction
is in the instrument cluster, meaning that the
instrument cluster must be replaced Page 90
-
27
.
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90-42

Signal from Engine Coolant
Temperature (ECT) sensor -G2-,
checking

If a malfunction of the Engine Coolant
Temperature (ECT) gauge is detected at the
instrument cluster, check if the signal at the
instrument cluster is OK.

- Connect VAS5051 tester or VAG1551 scan tool
Page 01
-241
.

- Read Measuring Value Block Page 01
-
114
.

- Select display group number 003.
If the Engine Coolant Temperature (ECT)
appears on the VAG1551 scan tool display but
not by the Engine Coolant Temperature (ECT)
gauge, the instrument cluster is faulty and must
be replaced.
If no Engine Coolant Temperature (ECT) is
indicated on the VAG1551 scan tool display, the
signal must be checked at multi-function
connection at instrument cluster.

- Remove instrument cluster Page 90
-27
.
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- Connect VAG1598 tester with VAG1598/25
adapter to the blue 32-pin connector.
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