Checking activation
- Switch ignition off and on again.
- Connect diode test lamp VAG 1527 B to disconnected connector for After-Run Coolant pump V51 with adapter cables from VAG 1594 A. LED must light up.
NOTE:
- This check must be performed within 10 minutes after switching ignition off.
If the LED does not light up:
- Locate and eliminate open circuit referring to wiring diagram: → Electrical Wiring Diagrams, Troubleshooting and Component Locations