CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
4
Engine control unit - J623- (Passat,
CC up to 11/10)
Removing and installing engine control unit with protective hous‐
ing ⇒ page 500 .
4.1
Removing and installing engine control
unit
Note
Removing and installing engine control unit with protective hous‐
ing ⇒ page 500 .
– If you wish to renew the engine control unit, connect the vehi‐
cle diagnostic tester and perform the guided function “Renew‐
ing engine control unit”.
Removing engine control unit
– Switch off ignition.
– Remove wiper arms ⇒ Electrical system; Rep. gr. 92 ; Wind‐
screen wiper system; Removing and installing wiper arms .
– Remove right plenum chamber cover ⇒ General body repairs,
exterior; Rep. gr. 64 ; Flush-bonded windows; Assembly over‐
view - plenum chamber cover .
– Pull connector -1- off heated windscreen control unit - J505- .
– Slide connector locking devices -2- on engine control unit out‐
wards and pull off both connectors.
– Remove securing bolts -3-.
– Remove retainer frame with engine control unit from plenum
chamber.
– Press locking device -1- outwards and slide engine control unit
-2- out in -direction of arrow-.
Installing engine control unit
4. Engine control unit J623 (Passat, CC up to 11/10)
499
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
– Slide engine control unit -1- into retaining frame in
-direction of arrow-.
– Fit retainer frame with engine control unit onto retainer -4-.
Specified torque of securing nuts for retainer -4-: 6 Nm.
– Tighten securing bolts -3- to 7 Nm.
– Fit connectors to engine control unit and slide locking devices
-2- inwards.
– Fit connector -1- to heated windscreen control unit - J505- .
– Install right plenum chamber cover ⇒ General body repairs,
exterior; Rep. gr. 64 ; Flush-bonded windows; Assembly over‐
view - plenum chamber cover .
– Install wiper arms ⇒ Electrical system; Rep. gr. 92 ; Wind‐
screen wiper system; Removing and installing wiper arms.
4.2
Removing and installing engine control
unit with protective housing
Special tools and workshop equipment required
♦ Grip pliers
– If you wish to renew the engine control unit, connect the vehi‐
cle diagnostic tester and perform the guided function “Renew‐
ing engine control unit”.
Removing:
– Switch off ignition.
– Remove wiper arms ⇒ Electrical system; Rep. gr. 92 ; Wind‐
screen wiper system; Removing and installing wiper arms .
– Remove plenum chamber cover ⇒ General body repairs, ex‐
terior; Rep. gr. 64 ; Flush-bonded windows; Assembly over‐
view - plenum chamber cover .
– Unscrew bolts -1-.
– Remove engine control unit cover, if fitted.
– Cover the plenum chamber with a clean cloth so that it is not
scratched.
– Raise engine control unit with retaining frame slightly.
– Release engine control unit -arrows- and pull out slightly.
500
Rep. gr.24 - Mixture preparation - injection
2024 VW Passat Owner's Manual
VW Passat B7 Service & Repair Manual
VW Passat B6 Service & Repair Manual
