Radiator Cooling Fan: Testing and Inspection

Coolant fan, checking
Special tools and equipment





^ VAG 1594 A Adapter set
^ Wiring diagram

Test conditions





^ The main fuses must be OK.
^ Coolant Fan Control (FC) Thermal switch -F18- is OK.

Test sequence
- Remove left-hand insulation tray
- Pull 3-pin connector off Coolant Fan Control (FC) Thermal switch -F18-.





- Bridge contact -1- and contact -2- of connector using adapter cables from VAG 1594 A.
1st speed for coolant fans -V7- and -V35- must start.
- Switch ignition on.
- Bridge contact -2- and contact -3- of connector with adapter cables from VAG 1594 A.
2nd speed for coolant fans -V7- and -V35- must start.
- If 1st or 2nd speeds of fans do not run:
- Locate and eliminate open circuit referring to wiring diagram:
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
- If no wiring fault is detected:
- Replace coolant fan -V7- or -V35-.