194002087 - A015 ALARM RINGING WITHOUT A REASON

With the alarm on the alarm cycles are set off without any apparent cause and without any attempts to break into the vehicle.

If it is not possible to stop the siren and deactivate the alarm using the remote control, simply activate the instrument panel by inserting the key in the key recognition device. The system can recognize the transponder and switch off the alarm system in this way.

		Results of the tests
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Check that there is not actually any instrusion in the passenger compartment like an insect that could set off the alarm by moving around or any moving object that could be detected by the ultrasound sensors. Check that the windows are properly shut, especially if there are strong winds.	Move on to Step 1	Insect in the passenger compartment that is detected by the ultrasound sensors when it moves around	Remove the cause of the alarm
			Vehicle windows open when there are strong winds	Close the windows
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the Examiner equipment to the diagnostic socket and check at the Body Computer Node for the presence of any errors in the alarm memory	Move on to Step 2	Presence of errors	Proceed as instructed by the diagnostic tester
2	ANTI-LIFTING/ULTRASOUND PROTECTION CHECK	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket and check at the Body Computer Node in active diagnosis that the anti-lift/ultrasound sensors are working properly	Move on to Step 3	Anti-lift/ultrasound sensor faulty	Replace the courtesy light module with built-in sensor    Op. 7040E51 FRONT MODULAR COURTESY LIGHT ASSEMBLY - R R FOR VERSIONS WITH SUN-ROOF
3	PERIPHERAL PROTECTION CHECK	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket and check at the Body Computer Node that the microswitches for the doors, bonnet and boot are working properly. In particular that there are not problems with the doors closed	Move on to Step 4
4	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the Examiner diagnostic equipment to the diagnostic socket and check the condition of the A-Bus serial line between the Body Computer Node and the siren at the Body Computer Node in active diagnosis    See E7015 ALARM	Move on to Step 5	Fault at A-BUS serial line	Repair the A-BUS serial line    See E7015 ALARM
5	SIREN POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check that the siren power supply is correct and check the condition of the connections    See E7015 ALARM	End of diagnosis	Siren power supply not correct	Restore the power supply    See E7015 ALARM
			Vehicle battery run down (voltage below 3 Volt)	Recharge the battery
			Body Computer defective	Replace Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.