SEAT Workshop Service and Repair Manuals

Checking coolant circulation pump Special tools and workshop equipment required

t  Voltage tester -V.A.G 1527B-

t  Auxiliary measuring set -V.A.G 1594C- t  Current flow diagram Test prerequisite

l  Fuse No. 18 must be OK (in vehicles with engine code AJH).

l  Fuse No. 16 must be OK (in vehicles with engine code AWC). Test procedure Vehicles with engine code AJH

–  Remove securing nuts -arrows- for heat shield for coolant circulation pump -V50- from bulkhead. –  Pull heat shield forwards slightly. –  Pull 2-pin connector off coolant circulation pump -V50-. Vehicles with engine code AWC

–  Pull 2-pin connector off continued coolant circulation pump -V51--arrow-. Checking function

–  Connect contacts for coolant circulation pump -V50- or continued coolant circulation pump -V51- using aux. cables from auxiliary measuring set -V.A.G 1594C-. If pump does not run: –  Renew pump. If pump runs: → Anchor Checking activation –  Switch ignition on and off again.

–  Connect voltage tester -V.A.G 1527B- to connector detached from coolant circulation pump -V50- or continued coolant circulation pump -V51- using aux. cables from auxiliary measuring set -V.A.G 1594C-. LED must light up.   Note! This check must be performed within 3 minutes of switching ignition off. If LED does not light up: –  Locate and eliminate open circuit using current flow diagram: → Current flow diagrams, Electrical fault finding and Fitting locations.