Checking fuel system pressurisation pump G6 (electrical test) - 4-cylinder and 6-cylinder engines (generation I) — AUDI

Checking
fuel system pressurisation pump
G6
(electrical test) - 4-cylinder and 6-cylinder engines (generation I)
Note
Identification of engine generation
Chapter
.
Special tools and workshop equipment required
Removal wedge
3409
Remote control
V.A.G 1348/3A
for V.A.G 1348 with
adapter cable
V.A.G 1348/3-2
Hand-held multimeter
V.A.G 1526E
Auxiliary measuring set
V.A.G 1594C
Procedure
Observe test conditions
Chapter
.
Pry off cover
1
on side of dash panel (driver's side) using
removal wedge
3409
arrow
.
Pull out
fuse 3 on fuse holder C
SC3
(ST2
item 2
, brown, third large fuse from the top
arrow
).
Connect
remote control
V.A.G 1348/3A
for V.A.G 1348 with
adapter cable
V.A.G 1348/3-2
to right-hand terminal on socket of fuse
SC3
.
Move switch of remote control to front of engine compartment.
Release and detach cover
2
; to do so, press down part marked with
arrow A
.
Release catch
arrow B
and open cover
1
.
Connect crocodile clip to
jump start socket
U6
item 1
in
terminal 30 wiring junction 2
TV22
located in plenum chamber.
Note
Disregard
item 2
.
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 no noise can be heard from pump:
Remove 1/3 section of rear seat bench (right-side)
General body repairs, interior
Rep. gr.
72
Rear seats; Removing and installing seat bench/individual seats
.
Remove bolts
arrows
and detach cover
1
for flange.
Unplug electrical connector
1
on flange.
To do so, slide catch
1
upwards
arrow A
and press release catch inwards
arrow B
.
Connect multimeter between contacts
1
and
5
of connector to measure voltage.
Press remote control switch.
Specification: approx. battery voltage.
If specification is not obtained:
Eliminate open circuit in wiring (refer to current flow diagram).
If reading matches specification although no noise can be heard from pump:
Remove fuel delivery unit
Chapter
.
Check that wiring between flange and fuel pump is connected and test for continuity.
Renew fuel delivery unit if no wiring fault is detected.
Install fuel delivery unit
Anchor
.