Volkswagen Golf Variant / Jetta. Manual - part 749

5.1.22

Checking remote control unit key

Special tools and workshop equipment required
♦ Vehicle diagnosis, testing and information system -VAS

5051B-

Procedure
– Connect vehicle diagnosis, testing and information system -

VAS 5051B- .

– In vehicle diagnosis, testing and information system -VAS

5051B- , select „Guided fault finding“.

– Using 

GoTo

 button, select „Functions/component“ and the fol‐

lowing menu options in succession:

♦ Body
♦ Electrical system
♦ 01 - On Board Diagnosis capable systems
♦ Onboard supply control unit
♦ Functions
♦ Check remote control unit key

5.1.23

Coding rain and light sensor -G397-

Special tools and workshop equipment required
♦ Vehicle diagnosis, testing and information system -VAS

5051B-

Procedure
– Connect vehicle diagnosis, testing and information system -

VAS 5051B- .

466

5051B- , select „Guided fault finding“.

– Using 

GoTo

 button, select „Functions/component“ and the fol‐

lowing menu options in succession:

♦ Body
♦ Electrical system
♦ 01 - On Board Diagnosis capable systems
♦ Onboard supply control unit
♦ Functions
♦ Code rain/light sensor

5.1.24

Adapting sensitivity of interior monitor‐

ing system

Special tools and workshop equipment required
♦ Vehicle diagnosis, testing and information system -VAS

5051B-

Procedure
– Connect vehicle diagnosis, testing and information system -

VAS 5051B- .

– In vehicle diagnosis, testing and information system -VAS

5051B- , select „Guided fault finding“.

– Using 

GoTo

 button, select „Functions/component“ and the fol‐

lowing menu options in succession:

♦ Body
♦ Electrical system
♦ 01 - On Board Diagnosis capable systems
♦ Onboard supply control unit
♦ Functions
♦ Adapt sensitivity of interior monitoring

5.2

Data bus diagnostic interface -J533-

General description
The data bus diagnostic interface -J533- is designed as a sepa‐

rate control unit. It is responsible for the following in the vehicle:
♦ Exchange of data between the CAN data bus systems „pow‐

ertrain CAN data bus“, „convenience CAN data bus“ and

„infotainment CAN data bus“.

5. Control units    

467

K lead and visa versa, so that data can be used by vehicle

diagnostic, testing and information system -VAS 5051A- .

If the data bus diagnostic interface -J533- is to be removed, the

procedure 

⇒ page 468

 must always be performed to read out the

codes stored in the unit.
Fault detection and fault display
The data bus diagnostic interface -J533- is equipped with self-

diagnosis.
For fault finding, use vehicle diagnosis, testing and information

system -VAS 5051B- in „Guided fault finding“ mode.
Additional information:
⇒ Current flow diagrams, Electrical fault finding and Fitting loca‐

tions
⇒  Operating manual

5.2.1

Renewing data bus diagnostic interface

-J533-

Special tools and workshop equipment required
♦ Vehicle diagnosis, testing and information system -VAS

5051B-

Procedure
– Connect vehicle diagnosis, testing and information system -

VAS 5051B- .

– In vehicle diagnosis, testing and information system -VAS

5051B- , select „Guided fault finding“.

– Using 

GoTo

 button, select „Functions/component“ and the fol‐

lowing menu options in succession:

♦ Body
♦ Electrical system
♦ 01 - On Board Diagnosis capable systems
♦ Data bus diagnostic interface
♦ Data bus diagnostic interface functions
♦ Renewing data bus diagnostic interface

5.2.2

Removing and installing data bus diag‐

nostic interface -J533- (left-hand drive

vehicle)

The data bus diagnostic interface -J533- is located in the driver's

footwell, on the right, next to the steering column.

468

Prior to removal of the data bus diagnostic interface -J533- , al‐

ways perform the procedure 

⇒ page 468

 to read out the codes

stored in the unit.

Caution

♦ Switch off ignition and all electrical consumers.
♦ Remove the ignition key.

Removing
– Remove driver's's footwell cover ⇒  General body repairs, in‐

terior; Rep. gr.  68 .

– Release and detach connector -1- from data bus diagnostic

interface -J533- -2-.

– Press securing pins -3- together -arrows- and push out of

holes.

Installing
Installation is carried out in reverse order of removal.

5.2.3

Removing and installing data bus diag‐

nostic interface -J533- (right-hand drive

vehicle)

The data bus diagnostic interface -J533- is located in the driver

side footwell, above the relay carrier.

Note

Before removing data bus diagnostic interface -J533- , it is es‐

sential that the work procedure 

⇒ page 468

 for reading out the

codes stored in the data bus diagnostic interface -J533- is carried

out.

Caution

♦ Switch off ignition and all electrical consumers.
♦ Remove the ignition key.

Removing
– Remove windscreen wiper system 

⇒ page 183

 .

5. Control units    

469