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-V.A.G 1594 C- . – Switch on ignition. The LED must light up for about 2 seconds. or short circuit. ⇒ Vehicle diagnosis, testing and information system VAS 5051 If LED lights up (voltage supply OK): ⇒ page 123 – Check that electrical wiring between flange and fuel pump is connected and has continuity. If no open circuit can be found: ⇒ page 123 3.6.2 Checking current draw of fuel pump – Pull 4-pin connector off fuel delivery unit flange. between contacts -1- of connector and fuel pump using auxil‐ iary cables from auxiliary measuring set -V.A.G 1594 C- . Note The current pick-up clamp of multimeter -V.A.G 1715- can also be attached to an auxiliary cable between contacts -1- of con‐ nector and fuel pump. – Connect contacts -4- of connector and fuel pump using an auxiliary cable from auxiliary measuring set -V.A.G 1594 C- . – Start engine and run at idling speed. Amperes. – If the measured value is not within specifications: ⇒ page 123 4-cylinder diesel engine (1.9 l engine) - Edition 01.2009 126 Rep. Gr.20 - Fuel supply system
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