FOX 2004 ➤
3 - Cyl. injection engine - Edition 12.2009
3
Engine control unit -J623-
Check and erase the fault memory in the Engine control unit -
J623- ⇒ page 102 again.
Adapt functions and components ⇒ page 104 .
3.1
Engine control unit -J623- - remove and
install
– Before removing it, check identification and code
⇒ page 102 .
– Turn the ignition off.
3.1.1
Removal
– Remove windscreen wiper arms and lower windscreen cov‐
ering ⇒ Electrical equipment; Rep. Gr. 92 ; Windscreen, rear
window and headlight wiper and washer .
lk
– Disengage fitting connectors -arrows - from the Engine control
unit -J623- .
– Move the Engine control unit -J623- to the front part of the
vehicle.
3.1.2
Installation
– Install the Engine control unit -J623 - until blocking it.
– Install fitting connectors for the Engine control unit -J623- .
– Install the windscreen wiper arms and lower windscreen cov‐
ering ⇒ Electrical equipment; Rep. Gr. 92 ; Windscreen wiper
and washer, rear window and headlights .
– Adjust the Engine control unit -J623- ⇒ page 104
– Finally, refer to the fault memory of the new Engine control unit
-J623- and, if necessary, erase the fault memory
⇒ page 102 .
– Perform a test drive.
– Check the fault memory in the Engine control unit -J623- .
3.2
Check and erase the fault memory in the
Engine control unit -J623-
Special tools and workshop equipment required
102
Rep. Gr.24 - Supply system - fuel injection
English 
