Radiator Cooling Fan: Testing and Inspection

Coolant Fan V7 and Right coolant fan V35, checking

Special tools, testers and auxiliary items required






- Voltage tester VAG 1527 B

Special tools, testers and auxiliary items required






- Auxiliary measuring tool set VAG 1594 A

- Wiring diagram

Conditions






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

Work sequence

- Disconnect electrical connector from Coolant Fan Control (FC) Thermal Switch F18.






- Use auxiliary cables from Auxiliary measuring tool set VAG 1594 A to bypass contact - 1 - and contact - 2 - of connector.

Stage 1 of coolant fans Coolant Fan V7 and Right coolant fan V35 should start.

- Switch ignition on.

- Use auxiliary cables from Auxiliary measuring tool set VAG 1594 A to bypass contact - 2 - and contact - 3 - of connector.

Stage 2 of coolant fans Coolant Fan V7 and Right coolant fan V35 should start.

If Stage 1 or 2 of the fans does not start:

- Use wiring diagram to find and repair open circuit.

If no open circuit could be found:

- Replace Coolant Fan V7 or Right coolant fan V35, respectively.