VOLKSWAGEN TRANSPORTER 1990 T4 / 4.G Workshop Manual

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CONTROLS AND EQUIPMENT

WIPER
AND WASHER SYSTEM

The
wiper and washer systems only work when the ignition is on.

Always
loosen blades
frozen
to glass be­

fore
operating
wipers
to
prevent
damage

to the
wiping
system.

Windshield

Brief
wiping

Lift lever to pressure point before position 1.
Low
wiper
speed:

Lever
in position 1.
High
wiper
speed:

Lever
in position 2.

Intermittent
wiping:
Lever
in position 3.

The
wipers operate about once every six
seconds.

Automatic
wiper/washer:
Pull
lever towards steering wheel (position
5) and hold - wipers and washer work.

Release
lever - washer stops and the wip­

ers
carry on for about four
seconds.

Rear
window*

Push
lever to position 4 and release - the
wiper will operate approx. every six
sec­

onds
(intermittent
wiping).

Push
lever again to position 4 and release.

The
wiper stops.

Automatic
wiper/washer:
Push
lever to position 4 and hold - both,
wiper and washer will operate.
*where applicable
Release
lever
- the washer operation stops instantly

and
wiper stops after two or three sweeps.

Wiper
and washer function overrides inter­
mittent
wiping. After releasing lever, inter­

mittent
wiping continues if previously set.

WARNING
• Check
wiper
blades
periodically.

Worn
or
dirty
blades
reduce
visibility,
making
driving
hazardous. Loosen
blades
frozen
to glass
before
operating

wipers.

• Clean all
windows,
windshield
and

wiper
blades
regularly
to
remove
road

film
and
carwash
wax buildup. Use an alcohol base cleaning solution and a sponge or
soft
cloth. Dry glass
with
a
chamois.
• Do not use the
wiper/washer
in
freez­

ing
weather
without
first
warming
the

windshield
with
the
defrosters,
other­

wise
the
washer
solution may
freeze
on
the
windshield
and obscure your vi­
sion.

• Avoid
running
the
wiper
blades
over

a dry
windshield
to
prevent
scratching
the glass. A scratched
windshield
will
reduce
visibility.


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EMULATION/HEATING

CONTROLS
AND EQUIPMENT
I
perating
Controls

_evers
A and C - Air
distribution

.ever A at
right
- windshield (1) and side
A'ndow
(2)
outlets
open,
•ver C at
left
-
footwell
outlets
under
:ashboard (4) and
footwell
outlets
in
:=ssenger compartment* open.

_ever
B -
Temperature
control

•
increase heat - slide lever to
right.
~3
decrease heat - slide lever to
left.
Lever
D -
Roof
outlets
in
passenger

compartment*

To increase outside air
flow
- slide lever to
left.

To decrease outside air
flow
- slide lever to
right.

Fan
control
switch
E
The air column can be regulated
with
three
fan speed settings. Air
outlets/vents

Heater or outside air
flow
from
outlets
1, 2, 3, 4 and
footwell
outlets
in passenger
compartment*, according to control lever positions.
Outside air
flow
from
roof
outlets
in
pas­

senger compartment*.
The side dashboard
outlets
3 are indi­ vidually adjustable -
side lever down -
vent
open side lever up
-vent
closed.

Adjust air
flow
direction sideways or up and down
with
center lever.

WARNINGS
see
next
page.

'where
applicable
51


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CONTROLS
AND EQUIPMENT

WARNING
• Good
visibility
comes
with
windows

free
of
fog,
condensation and
frost.

• For clear
visibility
and safe
driving
it
is
extremely
important
that
you
thor­

oughly
familiarize
yourself
with
and fol­ low the
operating
instructions
pertain­

ing to the proper use and
function
of
the
ventilation/heating
and defogging/
defrosting
system in
this
manual. If in

doubt,
consult your Volkswagen
dealer.

•
Maximum
heating
output
and
fast

defrosting
can be
obtained
only
after

the
engine
has reached
operating
tem­
perature.
Defogging and
defrosting
wind­
shield and side
windows

• Slide all control levers to the extreme
right and
turn
fan control switch E to speed
setting 2.
• The fan control switch for the
secon­

dary heat exchanger should be
OFF.

Warming
up vehicle
interior
quickly • Slide levers
A,
B and D to extreme right.
• Slide lever C to extreme left.
• Open air outlets 3.
• Turn fan control switch E to speed
setting 2.

Warming
up vehicle
interior
normally

Once
the windshield and side windows

are
clear and the vehicle interior is warm,
you may want to set the controls as fol­
lows:

• Slide lever A to the left.
• Slide lever B to desired temperature

setting.
• Slide lever C toward center.
• Turn fan control switch E to speed
setting 1.
Outside air
ventilation

With lever B at extreme left, outside air is emitted from all open outlets.

Hints
• All operating controls, except fan
con­

trol
switch E and fan control switch for the
secondary
heat exchanger can be ad­
justed to any intermediate position.
• Stale air is drawn out of the vehicle
interior through vents on the inside
front

door
panels. The vents can be opened or
closed
by sliding the lever forward or
rearward.

52


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CONTROLS
AND
EQUIPMENT

mLs 3
h
;
B25-419

Secondary heat exchanger for
passenger compartment*

This
heat exchanger is located under the
rear seat bench. The air volume can be
regulated with the 3-speed fan control
s.vitch on the instrument panel (see above pstration).
Z jring the warm months of the year, the
secondary heat exchanger can supple­
ment the outside air flow-through ventila­
tion system.

•
prevent
warm air flow from reaching the
;ootwells, the heat exchanger valve must ze shut off. To gain acces to the valve -

•
Grasp upper edge of
kick
panel under
rear seat bench and pull out.

•
To open valve - pull lever forward.

•
To close valve - pull lever rearward
(see above illustration).

•
Reinstall
kick
panel securely.
"where applicable


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CONTROLS
AND EQUIPMENT
AIR
CONDITIONER*

WARNING
• Good
visibility
comes
with
windows

free
of fog, condensation and
frost.

• For clear
visibility
and safe
driving
it
is
extremely
important
that
you
thor­

oughly
familiarize
yourself
with
and fol­ low the
operating
instructions
pertain­

ing to the proper use and
function
of
the
ventilation/heating,
defogging/de-

frosting
and air conditioning system in

this
manual. If in
doubt,
consult your
Volkswagen
dealer.

The
air conditioning unit is installed under
the roof of the driver's cab. Ten air outlets permit interior cooling throughout the

vehicle.

Two
climate control switches are located
on the instrument panel.

The
unit operates on the air recirculation
principle.
Air is sucked in through the two
large
air intake grilles at the rear portion of
the unit.

Because
the air conditioner is not nor­mally used at low ambient temperatures it

is
designed to operate only when outside
temperature is above 41° F or + 5° C.
When
the air conditioner is on, tempera­
ture as well as humidity inside the vehicle

is
controlled. During high outside humidi­
ty you can prevent windshield and win­

dows
from fogging by setting the controls
accordingly.

Maximum
cooling is maintained with

standard
heating/ventilation controls
turned off and the windows
closed.

However,
when the vehicle interior is very
hot from standing in the sun, open a win­
dow for a few minutes to permit hot air to

escape.
• iHBll
1
m
Air
outlets/Vents

1 - These air vents can be adjusted or
closed
completely.
• Tilt air vent housing to direct air
flow up or down.
• Turn thumb wheel to direct air
flow sideways.
• To open outlets, position thumb

wheel
in center of vents.
• To close air outlets,
turn
thumb

wheel
to extreme right or left.

2
- These air vents can be adjusted but not
closed.

• Direct air flow by swiveling the
vent housing.
54 * where applicable


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CONTROLS
AND
EQUIPMENT

Operating controls

A
— Fan switch

• Adjust
air
volume
by
turning switch
<nob
or
either one
of
the three
speeds.

• With
fan
switch knob
OFF,
the air
con­
ditioner will
not
operate. B
— Temperature control switch

• Turn switch knob
right
for
cooler
air.
• Turn switch knob
left
for
warmer air.
Operating hints
Comfort cooling

• Turn fan switch
A
to
speed
setting "1"
or

"2".
• Turn temperature control switch
B to
desired
position.
• Adjust
air
outlet
vents
as
desired.

Maximum cooling

• Turn fan switch
A to
extreme
right.

• Turn temperature control switch
to ex­

treme
right.
• Adjust
air
outlet
vents
as
desired.

'where applicable
55


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CONTROLS AND
EQUIPMENT

Malfunctions

if the
unit
does not
operate

• Outside temperatures may be below
41° For + 5°C.
• The air conditioner fuse may have blown. Turn the
unit
off and check fuse.

See
page 129 for use panel location.
General
hints

If
water
drips
under
the
vehicle

When outside temperature is high and the
air very humid, condensed water can drip
off the evaporator under the vehicle. This
is
normal and does not indicate a leak.

Payload
reduction

The weight of the air conditioner installed in your vehicle reduces the vehicle's load
carrying capacity. For weight information,

see
sticker on
left
doorjamb.

Maintenance
The condenser should be checked peri­
odically for cleanliness. If clogged
with

dirt
or insects, the condenser should be
washed down
with
water.
After the winter months and before ex­
tended summer
usage,
the air conditioner should be checked and, if necessary, ser­
viced by your Volkswagen dealer.


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AUXILIARY HEATER*
CONTROLS AND EQUIPMENT
~jrn the auxiliary heater on and off with the :amperature switch, located on the right of
fee steering column. Use the same switch

ID
regulate the heat.
depending on vehicle model, the warm air
lows from the footwell vents for the pas­ senger compartment and/or from a con-
tollable vent under the driving seat. The a r distribution cannot be controlled.
While driving, the heater can be operated rontinuously. When the engine is not run-

-:ng,
the heater will shut off automatically
after 10 minutes to save battery power.
"he auxiliary heater is running on fuel from our fuel tank. Fuel consumption varies
according to operating conditions and
-eat output (approx. 1 US qt or one liter
zer hour). 0
Switch knob positions 0 - Heater off.
0—1 — Heateron (engine stationary)
2 - Heateron (engine running)
2-3 - Temperature adjustment range. Engine stationary/ignition off
Heater on:
From position 0, push knob in and turn
clockwise. Switch knob control light will
come on. Knob will spring back out when
released.
Adjust temperature by turning
knob between positions 2 and 3.
Heater off:
The clockwork in the temperature regulat­ ing switch switches the heater off auto­
matically after about 10 minutes and the
lamp goes out.
To switch off before clockwork has run

down:
Turn temperature regulating switch
anti­

clockwise to 0. The lamp goes out and
clockwork runs down.


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CONTROLS AND EQUIPMENT

Engine
running

Heater
on -
Turn knob clockwise to position 2. Switch knob control light will come on. Adjust
temperature by turning knob between positions 2 and 3.

Heater
off -
Turn switch knob counter-clockwise to position 0. Switch knob control light will go
out.
Notes

• Every time the heater is switched off,
the warm air and combustion air blowers continue running briefly to cool the heater
down quicker.
• To avoid draining the battery, do not
run the heater repeatedly when the engine

is
not running.
• When the heater is running on the
clockwork time switch, it must be switched
off by hand before attempting to start the
engine at low temperatures so
that
the

full
battery capacity is available to
turn
the
engine.

WARNING
Never
start
the
heater
or let the
engine

or the
heater
run in an enclosed, un-

ventilated
area.
Exhaust
fumes
from

the
engine
or the
heater
contain
carbon monoxide,
which
is colorless and
odorless. Carbon monoxide,
however
is a
very
harmful
gas, and may be
fatal

if inhaled.
Due to the
risk
of
fire
the
heater
must

not be used
when
vehicle
is
parked
on
dry grass, brush or leaves.
Maintenance

During the winter and when driving over
very poor roads, mud or snow may tend to

accumulate
in the exhaust and combus­
tion air intake pipes. Have these pipes
checked
for blockage from time to time so

that
the heater can continue to work.
58


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CONTROLS AND EQUIPMENT
lie heater has a safety switch which is lo- :ated under the dash on the left near the
steering column. If the heater does not
start, or starts and then stops again, wait
3 minutes and then operate the red lever
on the safety switch.
[f the heater still does not work or if the
safety switch stops it again, there is a de-
:ect in the heater which can only be re- :aired by a Volkswagen workshop. Fuses
The auxiliary heater is equipped with two
fuses,
one 16 amp fuse for the entire heater and one 8 amp fuse for the over­
heating switch. Both fuses are located in a
fuse holder behind the fuse panel on the left side under the dashboard. When the
fuse for the overheating switch is blown,
the fan is working however no heat is

delivered.

If the replacement fuse blows again, have
the heater checked by your Volkswagen dealer.
59


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