Volkswagen Workshop Service and Repair Manuals

Checking continued 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 16 must be OK. Test procedure –  Remove centre, left and right insulation trays: → General body repairs, exterior; Rep. gr.50

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

–  Connect contacts of continued coolant circulation pump -V51- to battery using adapter cables from auxiliary set -V.A.G 1594C-. Continued coolant circulation pump must start up. If the continued coolant circulation pump -V51- does not run: –  Renew continued coolant circulation pump -V51-. If the continued coolant circulation pump -V51- runs: –  Switch ignition off and on again.

–  Connect voltage tester -V.A.G 1527B- to connector detached from continued coolant circulation pump -V51- using auxiliary cables from adapter set -V.A.G 1594C-. LED must light up.   Note This check must be performed within 10 minutes of switching ignition off. If LED does not light up: –  Locate and eliminate open circuit referring to current flow diagram: → Current flow diagrams, Electrical fault finding and Fitting locations.