Volkswagen Jetta / Bora: Electrical System Manual - part 71

1

Vehicle Diagnosis, Testing and Infor‐

mation Systems

WARNING

♦ During testing or measuring operations using a vehicle di‐

agnosis information system, there is a risk of serious or

even fatal injury!

♦ If the vehicle diagnosis information system is lodged in the

activity area of an airbag during a testing or measuring

operation, a triggered airbag can result in serious or even

fatal injury!

♦ During testing and measuring operations, work with a sec‐

ond person who can operate the vehicle diagnosis infor‐

mation system from one of the rear seats!

Note

♦

All working instructions described, such as modifications, cod‐

ing etc. can be carried out using the vehicle diagnosis, testing

and information system -VAS 5051A- and the vehicle diagno‐

sis and service information system -VAS 5052- .

♦

All working instructions can be found in “guided fault finding”

and “guided functions”.

♦

Additional information:

⇒ Self-study programme  No.  202 ; Vehicle Diagnosis, Testing

and Information System VAS 5051
⇒ Self-study programme  No.  256 ; VAS 5052
⇒ Self-study programme  No.  294 ; Online connection of the VAS

5051
– Connecting Vehicle Diagnosis, Testing and Information Sys‐

tem -VAS 5051A- 

⇒ page 281

 .

– Connecting vehicle Diagnosis, Testing and Information Sys‐

tem -VAS 5052- 

⇒ page 282

 .

1.1

Connecting vehicle Diagnosis, Testing

and Information System -VAS 5051A-

Note

Observe the latest operating instructions for vehicle diagnosis,

testing and information system -VAS 5051A- , which are dis‐

played after selecting the “Administration” and “Operating Man‐

ual” buttons.

Special tools and workshop equipment required

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1. Vehicle Diagnosis, Testing and Information Systems    

281

5051A-

♦ Diagnosis lead -VAS 5051/6A- (5 m)

♦ Diagnosis lead -VAS 5051/5A- (3 m)

Note

Only these leads are to be used for diagnosis, as they are the only

ones fitted with CAN lines and therefore allowing CAN diagnosis

and/or CAN communication.

Connecting Vehicle Diagnosis, Testing and Information System -

VAS 5051A- :
– Apply handbrake.
– On vehicles with automatic gearbox, move selector lever to

position “P” or “N”.

– On vehicles with manual gearbox, move gear stick to neutral

position.

– With the ignition switched off, connect vehicle diagnosis, test‐

ing and information system -VAS 5051A- using diagnostic lead

-VAS 5051/6A- to diagnostic interface -arrow- in vehicle.

– Switch ignition on.
– Switch off all electrical consumers.

Note

Any additional vehicle diagnosis, measuring and information sys‐

tems and/or vehicle diagnosis and service information systems

are connected in the sequence described above.

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282

Removing and installing fuse holder

2.1

Removing and installing fuse holder on

left of dash panel

Special tools and workshop equipment required
♦ Removal wedge -VAS 3409-

Note

When removing and installing components in visual area (con‐

nectors, covers, trims etc.) apply a commercial adhesive tape

where a lever tool is applied ( removal wedge -VAS 3409- , srew‐

driver).

Caution

Disconnecting and connecting the battery as described in the

Workshop Manual 

⇒ page 29

 .

Removing:
– Disconnect the battery 

⇒ page 29

 .

– Remove storage compartment on driver side ⇒  General body

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2. Removing and installing fuse holder    

283

the removal wedge -VAS 3409- or a screwdriver in the recess

-2- and lever off cover -1- in -direction of arrow-.

– Take fuse assignment card -1- out of fuse holder -2-.
– Remove securing bolts -arrows- and take fuse holder -1- out

as far it is possible (depending on cable length).

Installing:
Install in reverse order of removal.

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284