SEAT Workshop Service and Repair Manuals

Fuel pump: check t  Operation and voltage supply: check → Anchor t  Fuel pump: current consumption: verification → Anchor

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Manual multimeter -VAG 1526C-, see equivalent → Anchor

t	Voltage tester -VAG 1527B-, see equivalent → Anchor

t	Auxiliary cable kit -VAG 1594C-, see equivalent → Anchor

t  Digital multimeter -VAG 1715-, see equivalent → Anchor Test prerequisites l  The fuses must be in good condition. l  Battery voltage: at least 11.5 V l  All consumer electrics, for example: lights, heated rear window, should be off. Operation and voltage supply: verification –  Remove rear seat → bodywork - interior fitting work; Rep. gr.72.

–  Release retainers -arrows- at cover for sealing flange. –  Switch on ignition. The fuel pump should be heard to come on. –  Switch ignition OFF. If the fuel pump does not run:

–  Disconnect the 5-pin connector -arrow- from the bracket for the fuel delivery unit.

–  Attach the voltage tester -VAG 1527B- to the outer contacts of the auxiliary cable kit -VAG 1594C-. –  Switch on ignition. The LED must light for approx. 2 seconds If the LED does not light up: –  Verify the activation of the fuel pump relay and check the cables for interruption or short circuit → Vehicle diagnostic tester. If the diode lights (voltage supply is OK): –  Remove fuel delivery unit → Chapter. –  Check if the cables between the flange and fuel pump are connected and that there is no interruption. If there is cable integrity: –  Renew fuel delivery unit → Chapter. Fuel pump current consumption: verification

–  Connect the digital multimeter -VAG 1715- using the clamp ammeter on the cable to contact -1-. –  Start engine and allow to idle. –  Measure the power consumption of the fuel pump: t  Specification: 4,5 ... 5.5 amps.   Note If there is a temporary fuel system fault, the check can also be carried out during a test drive, with the help of a second person. –  If the measurement value differs from the specification: –  Renew fuel delivery unit → Chapter.