Volkswagen Golf Service & Repair Manual: Checking function and voltage supply of the fuel pump, engine code CWVA
Special tools and workshop equipment
required |
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Multimeter e.g. hand-held multimeter -V.A.G 1526E- |
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Auxiliary measuring set -V.A.G 1594C- |
Vehicle diagnostic tester |
Battery voltage must be at least 11.5 V. If necessary,
charge battery
→ Electrical system; Rep. gr.27. |
Fuses OK. → Current
flow diagrams, Electrical fault finding and Fitting locations |
Note
Function of fuel pump is checked using final control
diagnosis. |
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Observe safety precautions
→ Chapter. |
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Observe rules for cleanliness
→ Chapter. |
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Connect vehicle diagnostic tester-1-
as follows: |
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Connect diagnosis cable connector -2-
to diagnostic connection in driver footwell. |
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Select final control diagnosis for fuel pump in vehicle
self-diagnosis program. |
The fuel pump must now run slowly up to maximum speed. |
Note
The fuel pump runs very quietly. |
If the final control diagnosis is to be carried out several
times in succession, it may be necessary to start the engine
briefly before repeating the final control diagnosis. |
If fuel pump does not run: |
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Remove right rear seat
→ General body repairs, interior; Rep. gr.72. |
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Partially detach cover -1- in
floor covering at parting line -arrow-. |
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Do not detach cover completely from floor covering in order
to ensure it is reinstalled in the correct installation
position. |
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Detach it just enough that the cover can be folded upwards. |
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Fold up cover in -direction of arrow-. |
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Remove rear bench seat
→ General body repairs, interior; Rep. gr.72. |
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Continuation for all vehicles: |
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Unclip cover -1- for flange on
right at retaining tabs -arrows-,
using removal wedge -3409-. |
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Unclip sealing grommet -1-
downwards from cover -2-. |
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Push cover -2- back along
wiring harness -3-. |
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Check that connector -arrow- is
fitted securely by pulling connector without pressing catch. |
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If connector was not inserted correctly, repeat final
control diagnosis of fuel pump. |
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Release and pull off connector -arrow-. |
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Check contacts on plug and on fuel delivery unit for damage. |
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Connect test instrument/DSO adapter (5-pin) -VAS 5565- to
connector and fuel delivery unit. |
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Connect multimeter to cables -1-
and -5- of test instrument
adapter/DSO (5-pin) -VAS 5565-. |
Specification: approx. battery voltage |
If the specification is not attained: |
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Locate and eliminate open circuit referring to current flow
diagram → Current
flow diagrams, Electrical fault finding and Fitting locations. |
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The fuel system is pressurised.Risk of injury due to fuel which may
spurt out.Wear eye protection.Wear protective gloves.Release pressure:
place clean cloth around connection and carefully open connection.
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Draining fuel tank
→ Chapter |
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Pull fuel line -1- off flange.
Separate plug-in connectors
→ Chapter. |
Vehicles with auxiliary heater: |
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Remove fuel line -2- leading to
metering pump -V54- for auxiliary heater from sealing flange. |
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To do this, open clip at bottom. |
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Carefully pull out fuel line -2-. |
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Continuation for all vehicles: |
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Open locking ring using wrench -T10202-. |
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Check that electrical wires between flange and fuel pump are
connected. |
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Check contacts for damage. |
If no open circuit can be found: |
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Fuel pump is defective, renew fuel delivery unit
→ Chapter. |
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Special tools and workshop equipment
required
Removal wedge -3409-
...
Special tools and workshop equipment required
Removal wedge -3409-
Pressure tester -VAS 6550-
Connector cable -VAS 6550/3-3-
...
Other materials:
Additional safety regulations for side airbag
Under no circumstances may seat covers be fitted which have
not been specifically approved for use on Volkswagen seats with
side airbags.
The backrest padding must not be cut out in the area of the
side airbag.
...
Assembly overview - gas discharge headlight
1 -
Headlight
Removing and installing
→ Chapter
2 -
Front turn signal bulb
Front left turn signal bulb -M5-
Front right turn signal bulb -M7-
Removing and installi ...
Repair paintwork system for matt-finished vehicles
Issue 04.13
The repair paintwork system for matt-finished vehicles is
outlined below. Area of use: larger areas/full painting
operations
Application
Metal substrate
...
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