22 · Diagnostics

Central locking / not working

Make: Lancia
Model: Ypsilon Factory Service Manual
Year: 2003–2011
Section: Doors › Central locking / not working

‹ Prev Front seat lumbar adjustment not working Next › Central locking / not working with remote control

Fault diagnosisCentral locking / not working

CENTRAL LOCKING / NOT WORKING

When the door lock is operated with the mechanical key or from inside, via the controls on the tunnel control panel, the central locking system does not work.

The door unlocking/locking request reaches the body computer node from the door nodes via the the B-CAN. The body computer node sends the command to the door nodes which unlock/lock the side doors and it directly controls the unlocking/locking of the boot.

0	PRELIMINARY CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the 'independent driver door' option is deactivated.	Continue to Step 1	Function enabled	Disable the instrument panel node function
1	PRELIMINARY CHECK	All OK	Problems met	Operation
	Check the problem does not persist by unlocking/locking the door using the lock in the remaining door or the door unlocking and locking buttons in the tunnel control panel.	Continue to Step 3	Problem persists.	Continue to Step 2
2	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner and carry out active diagnosis on the defective door node.	Continue to Step 3	The door does not close/open	Continue to Step 4
3	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Keep the Examiner connected and check: for inactive control units; for control units with errors; for control units with error in CAN line	Continue to Step 8	anomalies.	Continue following the instructions for the diagnostic equipment.
4	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Using the Examiner diagnostic equipment, check the change is status of the switch in the lock when the key is used.	Continue to Step 7	The status signal for the lock switch has not been correctly downloaded.	Continue to Step 5
5	ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check continuity/insulation of the electrical connection between the defective door lock and the door node. See E3040 CENTRAL LOCKING	Continue to Step 6	Electrical conection broken or not insulated.	Restore the electrical connection See E3040 CENTRAL LOCKING
6	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present.	End of diagnosis	Problem persists	Replace the defective door lock
7	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present.	End of diagnosis	Problem persists	Replace the defective door Node
8	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present.	End of diagnosis	Problem persists.	Replace the Body Computer

‹ Prev Front seat lumbar adjustment not working Next › Central locking / not working with remote control

Parts & tools for this job For 2003 Lancia Ypsilon

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.