Fuel Pump Current Draw, Checking
-- Check current draw of fuel pump as follows:
-- Reconnect all disconnected fuel lines.
-- Connect a multimeter with electrical current probe to terminal 1 -arrow- from wiring harness 4 pin connector to Fuel Pump unit, right.
Fig 1: Connecting Multimeter V.A.G 1715 With Current Pick-Up On To Cable To 5-Pin Connector Terminal 1
-- Start engine and run at idle speed.
-- Measure current draw of fuel pump. Specified value: max. 11 amps.
If current draw is exceeded:
-- Fuel Pump faulty, replace fuel delivery unit.
NOTE:
If malfunction in fuel system is intermittent, test can also be performed during a road test, but a second person is required.