Removing and installing engine control unit J623 with anti-theft device, all vehicles apart from Jetta from MY 2011 — VW

Removing and installing
engine control unit
J623
with anti-theft device, all vehicles apart from Jetta from MY 2011
Special tools and workshop equipment required
Vehicle diagnostic tester
e.g.
vehicle diagnosis, testing and information system
VAS 5051 B
Not illustrated
Grip pliers
Protective gloves
Note
If the
engine control unit
needs to be renewed, connect
vehicle diagnosis tester
and perform guided function
“Renewing engine control unit”
Vehicle diagnostic tester
.
Removing
Switch off ignition.
Remove windscreen wiper arms
Electrical system
Rep. gr.
92
Windscreen wiper system; Removing and installing wiper arms
.
Remove plenum chamber bulkhead
General body repairs
Rep. gr.
50
Body - front; Plenum chamber bulkhead
Push down retaining frame in direction of
arrow
and remove engine control unit.
Unscrew shear-head bolts
arrows
using a pair of pliers.
Insert screwdriver between both locking plates
arrow
.
Carefully press screwdriver in
direction of arrow
and bend retaining bar
1
upwards at the same time.
Bend retaining bar
1
in direction of
arrow
until it can be pulled off connector.
Push locking devices of connectors in direction of
arrow
and pull off connectors.
Installing
Fit connectors to engine control unit and slide locking devices onto stop in direction of
arrow
.
Fit retaining bar
1
onto connectors and press it in direction of
arrow
.
Guide pin
2
to stop into hole on valve timing housing.
Use new shear-head bolts
arrows
to secure retaining bar on engine control unit.
Tighten shear-head bolts
arrows
evenly until bolt heads shear off.
Place engine control unit into retaining frame and push upwards in direction of
arrow
.
Install plenum chamber bulkhead
General body repairs
Rep. gr.
50
Body - front; Plenum chamber bulkhead
.
Install windscreen wiper arms
Electrical system
Rep. gr.
92
Windscreen wiper system; Removing and installing wiper arms
If
engine control unit
was renewed, connect
vehicle diagnosis tester
. Perform guided function
“Renew engine control unit”
Vehicle diagnostic tester
.
Interrogate fault memory of
engine control unit
and erase all fault entries
Vehicle diagnostic tester
“Guided function”
.
Perform road test.
Note
Observe applicable safety measures when road testing vehicle
Anchor
.
Interrogate fault memory of
engine control unit
.