Removing and installing engine control unit J623 with protective housing (Golf, Eos 11.2008►, Scirocco 10.2008►, Passat, Passat CC, Golf Cabriolet) — VW

Removing and installing
engine control unit
J623
with protective housing (Golf, Eos 11.2008►, Scirocco 10.2008►, Passat, Passat CC, Golf Cabriolet)
If you wish to renew the engine control unit, connect the
Vehicle diagnostic tester
and carry out the guided function
“Renew control unit”
.
Removing
Switch off ignition.
Remove wiper arms
Electrical system
Rep. gr.
92
Windscreen wiper system; Removing and installing wiper arms
.
Golf, Golf Cabriolet, Eos, Scirocco
Remove plenum chamber bulkhead
General body repairs
Rep. gr.
50
Body - front; Plenum chamber bulkhead
.
Passat, Passat CC
Remove plenum chamber cover
General body repairs
Rep. gr.
50
Front body, plenum chamber cover
.
Continuation for all vehicles
Press retaining frame down in
direction of arrow
and remove engine control unit.
Unscrew shear-head bolts
arrows
using pliers.
Insert screwdriver between both locking plates
arrow
.
Carefully press screwdriver in direction of
arrow
and bend retaining bow
1
upwards at the same time.
Bend retaining bow
1
in direction of
arrow
until it can be pulled off connectors.
Push connector locking devices in direction of
arrow
, and pull connectors off.
Installing
Fit connectors to engine control unit and slide locking devices onto stop in direction of
arrow
.
Fit retaining bow
1
onto connectors and press it in direction of
arrow
.
Guide pin
2
to stop into hole on engine control unit.
Secure retaining bow with shear-head bolts to engine control unit
arrows
.
Tighten shear-head bolts evenly until heads shear-head off
arrows
.
Insert engine control unit into retaining frame and press retaining frame upwards in
direction of arrow
Golf, Golf Cabriolet, Eos, Scirocco
Install plenum chamber bulkhead
General body repairs
Rep. gr.
50
Body - front; Plenum chamber bulkhead
.
Passat, Passat CC
Fit plenum chamber cover
General body repairs
Rep. gr.
50
Front body, plenum chamber cover
.
Continuation for all vehicles
Fit wiper arms
Electrical system
Rep. gr.
92
Windscreen wiper system; Removing and installing wiper arms