audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Radiator > < Understanding Track Style Wiring Diagrams, Important Stuff !|Page 2001
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Temperature Warning Lamp/Indicator: Testing and Inspection

Engine coolant overheating warning lamp, checking 

Electronic thermoswitch connections 

+  voltage supply, terminal 15a
C  to overheat warning lamp
R  to A/C control unit
T  to coolant temperature gauge

-

remove connector from electronic thermoswitch

-

connect contact C to ground with jumper wire

-

switch ignition ON
-

overheating warning lamp flashes for approximately 30 seconds

If NO
-

check warning lamp OR repair break in wiring using current flow diagram

If warning lamp still does NOT flash
-

replace instrument cluster printed circuit board

Radiator > < Understanding Track Style Wiring Diagrams, Important Stuff !|Page 2001