Removing and installing steering column electronics control unit J527 — VW

Removing and installing
steering column electronics control unit
J527
Caution
The removal and installation of individual components of the steering column switch must be performed in a specified sequence
Chapter
.
WARNING
Before beginning work on the electrical system or the removal of the steering wheel, the following conditions must be met:
The mechanic must electrostatically discharge himself or herself. This can be done by touching earthed metal such as a water pipe, a heating pipe, metal girders or a lifting platform
Chapter
.
Not heeding this warning can cause components to later fail during later operation!
Unbolt the earth strap from the battery
Electrical system
Rep. gr.
27
Battery; Disconnecting and connecting battery
.
The wheels must be in straight-ahead position.
Not heeding this warning can cause the airbag system to later fail during later operation!
Caution
The following work must not be carried out while the universal joint of the steering mechanism is disconnected or the
steering angle sender
G85
is removed:
Reconnecting battery
Switching on ignition
Turning steering mechanism
Turning steering column
These points must absolutely be heeded because otherwise, irreparable damage may be caused.
Note
After new control unit has been installed, it must be coded
Chapter
.
In the event of faults in the steering column switch, the coding of the control unit must be checked
Chapter
.
Removing:
Remove bolt
1
.
Push a suitable wire
2
into the hole on the
steering column electronics control unit
J527
approx. 45 mm deep
arrow 1
, causing the locking lug
arrow 2
on the front fastener to disengage.
Using a suitable screwdriver, push the locking lug of the rear fastener
arrow A
backwards towards the steering wheel in order to release the fastener.
Carefully pull the
steering column electronics control unit
J527
downwards off the steering column switch.
Note
When pulling off, ensure that
steering column electronics control unit
J527
is pulled down straight and is not canted.
Unclip
arrow A
connector
1
and disconnect from
steering column electronics control unit
J527
.
Pull locking bar
3
out of connector
2
.
Unclip
arrow B
connector
2
and disconnect from
steering column electronics control unit
J527
.
Installing:
Installation is carried out in the reverse order. When installing observe the following:
Note
When fitting the connector, ensure that none of the pins are bent and that the connector engages audibly.