939003557 - A025 ALARM VOLUMETRIC SURVEILLANCE NOT WORKING

When the alarm is switched on using the remote control, the system is activated correctly but the volumetric sensors do not intervene.

The volumetric sensors are located in the courtesy light module and are connected to the Body Computer Node via the dialogue line known as the A-BUS. The volumetric sensors are operated and controlled by the Body Computer node by means of a series of coded messages and can be excluded by the customer using the special button. If there is a failure the Body Computer Node detects and memorizes the causes of the malfunction

		Results of the tests
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket and check the following at the Body Computer Node in parameters ambient:. the presence of the volumetric sensors in the errors ambient:. that there are no faults with the volumetric sensors	Move on to Step 2	Volumetric sensors manually excluded	Switch on the volumetric sensors after getting permission from the customer
			Volumetric sensors not present	Check the conformity of the vehicle
			Presence of faults	Proceed as instructed by the diagnostic tester
2	ULTRASOUND MODULE POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check that the ultrasound module is correctly supplied by carrying out the    See Test 5580EC ULTRASOUND/ANTI-LIFT MODULE CHECK	Move on to Step 3	Supply not correct	Restore correct power supply
3	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnostic equipment to the diagnostic socket and check the following at the Body Computer Node in active diagnosis:- the operation of the volumetric modules- the condition of the A-Bus serial line	Move on to Step 4	A-BUS serial line interruption	Renew serial line    See E7015 ALARM
			Ultrasound module defective	Replace the courtesy light module with built in ultrasound sensors    Op. 5580E50 ANTITHEFT DEVICE VOLUMETRIC SENSOR R R FOLLOWING ELECTRICAL CIRCUIT CHECK
4	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the fault is no longer present	Fault persists	Body Computer defective	Replace Body Computer    Op. 5505A32 BODY COMPUTER - R.R