After-Run Coolant Pump: Testing and Inspection

Auxiliary electric coolant pump (V51), radiator fan (V7) run-on, checking




- turn ignition key on/off
- disconnect 4- point connector from temperature sender switch (G2/F87)
- bridge contacts B, D (brown/red and brown wire) using Connector Test Kit VAG 1594
- radiator fan (V7), auxiliary coolant pump (V51) must come on

If NO, check with VAG 1466 or equivalent