Volkswagen Golf / Golf GTI / Jetta. Manual — part 948

87-26

All automatic or manual function selections are

input into the A/C control head via buttons
located below the display.

When AUTO mode is selected, fresh air blower

speed and air distribution signals are provided by
the A/C control head -E87-. The fresh air blower
speed is high when there is a large difference
between the selected temperature and the actual
interior temperature, and low when the difference
is small or the same.

The interior temperature setting, operation

modes, approximate outside temperature and
blower speed are indicated on the A/C control
head display at all times. The defrost, vent and
footwell air distribution symbols only appear in
the display when air distribution is selected
manually (AUTO function override). During
manual air distribution, the "AUTO" display
remains off until such time the "AUTO" button is
pressed.

The system can be switched off completely by

pressing the front passenger "decrease fan
speed" button until "OFF" appears in the display.

Climate control options

Automatic temperature and fan speed mode

Manual temperature and fan speed mode

Manual selection of air recirculation mode

Manual selection of air flow to instrument panel

vents

Manual selection of air flow to footwell vents

Manual selection of air flow to windshield

defroster

Climatronic

13/2/2005

87-27

Notes:

Pressing the button "AUTO" overrides all

manually input settings.

In ECON operation, only the compressor is

switched off. Heating and A/C operations
continue to be controlled electronically.

Manually selected settings remain stored in

memory when the ignition is switched off. Only
the function "Air recirculation" is erased after 20
minutes.

Climatronic manual operation

Owner's

Manual.

A malfunction is present if all display symbols

on the A/C control head -E87- flash. In this case
check the Diagnostic Trouble Code (DTC)
Memory first

Page 01-12

.

Climatronic

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87-28

On Board Diagnostic (OBD)

The Climatronic control module -J255- is

controlled by an internal microprocessor
with On Board Diagnostic (OBD) capability.
If malfunctions, short or open circuits occur
on monitored components, Diagnostic
Trouble Codes (DTC) are stored in
memory.

Perform OBD program using VAG 1551

Scan Tool or VAS 5051 Vehicle Diagnostic
Testing and Information System in operating
mode "Guided Fault Finding".

Performing OBD program on models

through m.y. 2001

Page 01-12

.

Performing OBD program on models from

m.y. 2002

Page 01-5

.

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Components, checking and adjusting
with VAS 5051

All OBD functions are possible using the VAS

5051 tester. Proceed as follows:

- Connect VAS 5051 to vehicle Data Link

Connector (DLC)

Page 01-2

, select mode

"Guided Fault Finding"

- Enter appropriate model, equipment and model

year information and press ">" to confirm.

After all control modules have been registered

and DTC memories checked,

- Press "Go to"

- Select "Function/Component Selection"

- Select "Body, (Repair Gr. 01, 27, 50 to 87)"

- Select "Heating, ventilation, air conditioning

(Repair Gr. 01, 80 to 87"

- Select "Systems capable of self-diagnosis"

- Select "Climatronic"

Climatronic

13/2/2005