Volkswagen Golf / Golf GTI / Jetta. Manual — part 109

01-17

If the coding differs from the vehicle version,
then:

- Check control module coding

Page 24-177

,

coding Motronic Engine Control Module (ECM) -
J220-.

- Press

-button.

Rapid data transfer

HELP

Select function XX

Indicated on display:

- See repair procedures for further measures.

On Board Diagnostic (OBD)

01-18

VAS 5051 and Motronic
Engine Control Module (ECM)
-J220-, connecting and
selecting

All functions which could previously
be performed with VAG 1551/1552
can also be performed with the
vehicle diagnostic, testing and
information system VAS 5051 in the
operating mode vehicle On Board
Diagnosis (OBD):

Operating instructions for Vehicle

Diagnosis, Testing and Information
System VAS 5051.

Special tools, workshop
equipment, testers, measuring
instruments and auxiliary items
required

VAS 5051 Vehicle Diagnosis,

Testing and Information System

Diagnostic cable VAS 5051/1 or

VAS 5051/3

On Board Diagnostic (OBD)

01-19

Test prerequisites

The fuses must be OK.

The main fuses must be OK.

The battery voltage must be at

least 11.5 V.

Ground (GND) connection

between engine and body must
be OK.

All electrical devices, e.g. lights

and rear window heating must
be turned off.

If the vehicle is equipped with air

conditioning, it must be turned
off.

Selector lever must be in

position "P" or "N" on vehicles
with an automatic transmission.

On Board Diagnostic (OBD)

01-20

Work sequence

- Connect VAS 5051 using VAS 5051/1 or VAS

5051/3 diagnostic adapter cable as follows:

Note:

Operating instructions for VAS 5051.

- Connect connector of diagnostic adapter cable

onto DLC.

- Depending upon desired function: Switch

ignition on or Start engine

Page 01-9

, Table

"Selectable functions".

In the functions 04 - Basic setting or 08 -

measured value (data) block, the display zones
will be listed from top to bottom.

If the display does not indicate as described in

the work sequence:

On Board Diagnostic (OBD)