Radiator Cooling Fan: Testing and Inspection

Coolant fan, checking





Special tools, testers and auxiliary items required
^ Adapter set V.A.G 1594A
^ Wiring diagram

Requirements





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

Work sequence
- Disconnect 3-pin connector from Coolant Fan Control (FC) thermal switch -F18-.
- Bridge contact 1 and contact 2 of connector with auxiliary cables V.A.G 1594A.
- 1st speed of Coolant fan -V7- and Right coolant fan -V35- must run.
- Switch ignition on.
- Bridge contact 2 and contact 3 of connector with auxiliary cables V.A.G 1594A. 2nd speed for Coolant fan -V7- and Right coolant fan -V35- must run. If fan 1st or 2nd speeds do not run:
- Locate and eliminate open circuit referring to wiring diagram.

If no wiring fault is detected:
- Replace Coolant fan -V7- or Right coolant fan -V35-.