engine coolant AUDI A4 2000 B5 / 1.G Instrument Cluster Location Diagram Through Model Year 2000 Workshop Manual

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
.
Pa
ge 19 of 28 Instrument cluster
(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.EE01.90.2

90-43

- Measure resistance (sensor resistance) between
terminal 8 and 7 using VAG1526 multimeter.
Specified values:

Coolant temperature 90 C: approx. 110 Ohm
Coolant temperature 120 C: approx. 50 Ohm If the specified values are not reached, the wire
connection to Engine Coolant Temperature
(ECT) -G2- must be checked.

- Check wire connection according to wiring
diagram.

Electrical Wiring Diagrams, Troubleshooting &
Component Locations If the wire connection is OK, Engine Coolant
Temperature (ECT) -G2- must be replaced.
Pa
ge 21 of 28 Instrument cluster
(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.EE01.90.2