22 · Diagnostics

Alarm and door lock do not come on

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Alarm › Alarm and door lock do not come on

‹ Prev Alarm does not come on Next › Alarm led not working

Fault diagnosisAlarm and door lock do not come on

ALARM AND DOOR LOCK DO NOT COME ON

When the alarm is operated using the remote control, all the doors do not close and the deterrent led does not work.

The alarm signal is managed by the body computer node that receives a signal from the remote control unit and controls central locking of the doors and boot.

0	PRELIMINARY CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the operation of the system using the second remote control unit supplied with the car.	End of diagnosis	The fault persists	Continue to Step 3
1	CHECKING REMOTE CONTROL BATTERY	All OK	Problems met	Operation
	Check that the defective remote control battery is charged.	Continue to Step 2	Battery discharged	Replace the remote control battery
2	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner diagnostic equipment and check: That the defective remote control unit is properly stored; The operation of individual defective remote control keys.	Continue to Step 6	Remote control unit not stored correctly.	Store the remote control unit
		Continue to Step 6	Malfunction of individual remote control keys.	Change the remote control unit.
3	CHECKING CENTRAL LOCKING	All OK	Problems met	Operation
	Check the correct operation of the central locking	Continue to Step 4	Door lock system not working.	Continue with door lock system diagnosis See table See table P11 CENTRAL LOCKING / NOT WORKING WITH REMOTE CONTROL
4	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner diagnostic equipment and check: For faults in the body computer node; For the presence of an alarm signal, in parameter mode.	Continue to Step 5	Malfunction of radio receiver on body computer node.	Replace the body computer node Op. Op. 5505A32 BODY COMPUTER - R R
		Continue to Step 5	Alarm system not present on car.	Check car compliance
5	ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check that the radio receiver aerial on the body computer node is properly connected.	Continue to Step 6	Radio receiver aerial incorrectly connected.	Connect the radio receiver aerial correctly to the body computer node.
6	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present.	End of diagnosis

‹ Prev Alarm does not come on Next › Alarm led not working

Parts & tools for this job Staging For 2003 Alfa Romeo GT

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