Volkswagen Jetta / Bora: Electrical System Manual - part 73

-1-.

Note

When the central securing screw -arrow-, the electronics box -1-

is pushed upwards off the electronics box mounting.

– Pull electronics box -1- upwards off electronics box mounting.

Note

For removal of the flat contact housing -1-, the air filter (on vehi‐

cles with diesel engine only), the battery and the battery console

must be removed.

– Remove air filter housing, if necessary.
– Remove battery 

⇒ page 29

 .

– Remove securing bolts -arrows- of battery console -1-.
– Take battery console -1- out of vehicle.

Jetta 2005 ➤ , Bora 2006 ➤

4. Electronics boxes    

289

slide flat contact housing -1- sidewards -arrow A- out of brack‐

et of electronics box.

– Press tabs apart on bracket of electronics box -arrows C- and

slide flat contact housing -2- forwards -arrow D- out of bracket

of electronics box.

– Unscrew securing nuts -arrows- of bracket from electronics

box -1-.

Note

Whether the additional relay carrier is installed depends on the

vehicle equipment.

– Pull bracket of electronics box -1-, upwards off studs as far as

relay carrier cables allow.

– Unclip relay carrier -1- sideways out of bracket of electronics

box -2-.

– Take bracket of electronics box -2- out of vehicle.
Installing:
Installation is performed in the reverse order of installation; when

doing this, note the following:
– Tighten threaded connections to specified torque settings

⇒ page 307

 .

Jetta 2005 ➤ , Bora 2006 ➤

290

clip -1- in -direction of arrow- until cover -2- engages.

Note

Then check whether the cover -2- of the electronics box is en‐

gaged correctly.

Jetta 2005 ➤ , Bora 2006 ➤

4. Electronics boxes    

291

Control units

5.1

Onboard supply control unit -J519-

Note

♦

The onboard supply control unit -J519- and the relay carrier

attached to the onboard supply control unit, on left of dash

panel form one unit and cannot be separated.

♦

Additional information:

⇒ Current flow diagrams, Electrical fault finding and Fitting loca‐

tions
⇒  Operating instructions
General description:
The onboard supply control unit -J519- is responsible for the fol‐

lowing in the vehicle:
♦ Electrical load management
♦ Exterior light control
♦ Turn signal control
♦ Rear window wiper
♦ Heated rear window
♦ Terminal control
♦ Surround lighting
♦ Terminal control
♦ Dimmers, instrument lighting
♦ Fuel pump presupply
♦ Alternator stand-by
♦ Horn
The following functions can be adapted:
♦ Deleting learning values and setting standard adaptation val‐

ues

♦ Adjusting period for coming home function (depending on

equipment)

♦ Adjusting period for leaving home function (depending on

equipment)

♦ Adjusting rear window heating “On time”
♦ Switching on and off footwell lighting
♦ Switching on and off motorway signaling
♦ Adjusting load management
♦ Adjusting “activation time” for headlight cleaning system

⇒ page 294

Jetta 2005 ➤ , Bora 2006 ➤

292