19-3
Cooling system, components Note:
Always replace gaskets and seals.
Draining and filling system with coolant page 19
-6 .
Testing cooling system for leaks page 19
-11
.
1 -
Thermostat
Replacing page 19
-4
Opening and closing temperatures page 19
-4
2 -
Seal
Always replace
3 -
Thermostat housing
4 -
10 Nm (7 ft lb)
5 -
Gasket Always replace
6 -
Coolant pump To remove and install, remove ribbed drive
belt ( page 13
-9 ) and toothed belt (
page 13
-11
)
7 -
10 Nm (7 ft lb)
Pa
ge 1 of 12 Coolin
g system, com
ponents
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE01.19.2
19-5
Coolant fan control thermal switch,
checking
The coolant fan control thermal switch -F54- is
located in the lower left part of the radiator.
Terminal assignment
3-pin connector Switching temperature
On
Off
1 = 1st stage
92 - 97 C
(198 - 207 F)
approx. 84 C (183 F)
2 = 2nd stage
99 - 105 C
(210 - 221 F)
approx. 91 C (196 F)
3 = Battery positive voltage (B+)
Pa
ge 3 of 12 Coolin
g system, com
ponents
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE01.19.2
