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– Release fastener -arrow A-, and remove engine control unit -
J623- -1- -arrow B-.
Fitting
Install in the reverse order of removal, observing the following:
– Fit engine control unit - J623- with the lower edge to the front
in the direction of the mounting -arrow A- and block the upper
edge.
• Lugs on engine control unit must engage in notches at top and
bottom of bracket -arrows B-.
– Install battery ⇒ Electrical system; Rep. gr. 27 ; Battery; Dis‐
connecting and reconnecting battery .
After installing a new engine control unit, the following operation
must be performed:
– Switch on ignition, and select the following menu option on
vehicle diagnostic tester :
♦ 0001 - Renew engine control unit
6.1.2 Removing and installing engine control
unit - J623- with protective housing
Special tools and workshop equipment required
♦ Hot air blower - VAS 1978/14A- with nozzle attachment from
wiring harness repair set - VAS 1978 B-
♦ Small grinder with cutting disc, commercially available
♦ Vehicle diagnosis tester
Removing
– If the engine control unit is to be renewed, switch on ignition
and select the following menu items in the Vehicle diagnostic
and service information system :
♦ 0001 - Renew engine control unit
Ateca 2017 ➤ , León 2013 ➤ , León ST 2013 ➤
4 cyl. petrol engine (1.8 l and 2.0 l with direct injection, 4 V, exhaust gas turbocharger, timing chain,
EA 888 III. Gen) - Edition 10.2018
6. Engine control unit 377
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