Radiator Cooling Fan: Testing and Inspection

Coolant fan, checking
Engine codes AEG, AVH, AZG

Special tools, equipment, testers, measuring instruments and auxiliary items required





^ VAG1594 Adapter set
^ Wiring diagram

Requirements





^ Main fuses must be OK
^ Coolant Fan Control (FC) thermal switch -F18- OK

Work sequence
^ Remove left side sound insulation:
^ Disconnect 3-pin connector from Coolant Fan Control (FC) thermal switch -F18-.
^ Bridge contact -1- and contact -2- of connector with auxiliary cables from VAG1594A





Connector type A





Connector type B





Connector type C
1st speed for Coolant fan -V7- and Right coolant fan -V35- must start
^ Switch on ignition.
^ Bridge contact -2- and contact -3- of connector with auxiliary cables from VAG1594A
2nd speed for Coolant fan -V7- and Right coolant fan -V35- must start

If 1st or 2nd speeds of fans do not run:
^ Locate and eliminate open circuit using wiring diagram:
Refer to wiring diagrams
If no wiring fault is detected:
^ Replace Coolant fan -V7- or Right coolant fan -V35-.