Arghhh- Dealers

[ulfilias]

Hi Conan,

Oooh. Please do. It would be nice to show that that haven't even done thier job properly by AUDIs standards.

Ta,
Lee

[Conan_the_Librarian]

Ere Tis,

Requirements for test:
Battery voltage not less than 12.7 V
Fuse S1 OK (in fuse box, blue fuse carrier ST4)
Fuel pump relay OK (on central electrics unit in electronics box; passenger's footwell, relay position 6).

Testing:
Fuel filter OK
Ignition switched off


Checking voltage supply

Remove fuse holder cover in driver’s footwell
Pull fuse No. S1 out of fuse carrier ST4 in fuse box.
ST4 - blue fuse carrier
Connect jumper lead with momentary switch to lower terminal of socket for fuse No. S1 in fuse carrier ST4 -arrow 1-.
Connect clamp to positive battery supply (e.g. socket of 60 Amp fuse -arrow 2- at top of fuse box).
Press remote control switch.
Pump should start running audibly.

Note:
The fuel pump runs very quietly. Where possible, avoid noisy surroundings for this test. If necessary, perform the test with a 2nd mechanic.

If pump does not start running:

Remove cover for fuel gauge sender and fuel delivery unit (right side) under floor covering in boot -arrows-.
If pump does not start running:

Remove cover for fuel gauge sender and fuel delivery unit (right side) under floor covering in boot

Release 4-pin connector -arrow- and unplug.


Connect multimeter (voltage range) between contacts 1 and 4 of connector.
Press remote control switch.
Specification: approx. battery voltage
If the specification is not obtained:

Locate and eliminate open circuit using current flow diagram:


If the specification is obtained, even though the fuel pump did not run:

Remove fuel delivery unit
Check if the electric wires between flange and fuel pump are disconnected or broken (test continuity).
If no fault is detected in the wiring:

Fuel pump is defective. Renew fuel delivery.


Testing current draw

Test requirement:

Supply voltage for fuel pump OK

terminal of socket for fuse No. S1 in fuse carrier ST4 -arrow 1-.
Connect clamp to positive battery supply (e.g. socket of 60 A fuse -arrow 2- at top of fuse box).
Connect multimeter with current clamp to connecting lead for remote control switch.
Press remote control switch.
Measure the current draw of the fuel pump.
Specification: approx 8 A
If the specification is not attained:

Note:

If the indicated current draw is 4 amps, this means the fuel pump is running dry (without fuel).

Meter reading---------------- Cause of fault------------------------------------- Rectification
approx. 4 A -------------------- Tank empty --------------------------------------- Fill up with fuel
------------------------------------ Fuel delivery unit incorrectly installed ---- Check installation of fuel delivery unit
----------------------------------- Baffle housing leaking -------------------------- Perform leak test on baffle housing
------------------------------------ Fuel gauge sender 2 incorrectly installed - Check installation of fuel gauge sender 2

0 A ------------------------------- Fuel pump defective -------------------------- Renew fuel delivery unit