Coolant Fan, Checking

Coolant fan, checking

Special tools, testers and auxiliary items required





^ Connector test set V.A.G 1594 A
^ Wiring diagram

Test requirements





^ Main fuses must be OK.
^ Coolant Fan Control (FC) Thermal Switch F18 OK.

Test sequence
- Disconnect connector on Coolant Fan Control (FC) Thermal Switch F18.
- Bridge terminal 1 and terminal 2 of connector with adapter cables from V.A.G 1594 A.
- Stage 1 of Coolant Fan V7 must start up.
- Switch ignition on.
- Bridge terminal 2 and terminal 3 of connector with adapter cables from V.A.G 1594 A.
- Stage 2 of Coolant Fan V7 must start up.

If 1st or 2nd speeds of fans do not run:
- Locate and repair open circuit in wiring using wiring diagram Electrical Wiring Diagrams, Troubleshooting and Component Locations.

If no fault is detected in the wiring:
- Replace Coolant Fan V7.