198001676 - A031 ALARM DOES NOT COME ON WHEN LUGGAGE COMPARTMENT IS CLOSED

With the alarm on, after a boot lid opening/closing cycle, the system no longer switches on.
One second after the boot lid opening command (from the remote control), the system is automatically reactivated if it does not detect the opening of the boot lid, switching on the volumetric, anti-tilt and perimeter protection.
Test results
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the diagnostic equipment to the body computer node and check, in the parameters mode, that the boot lid status (open or closed) is correctly received.Move on to Step 4The status of the boot lid is not received.Move on to Step 2
2ELECTRICAL CIRCUIT CHECKAll OKProblems encounteredOperation
Check that the electrical connection between the boot lid switch and the body computer node is not broken or insulated.Move on to Step 3Electrical connection interrupted or not insulated.Restore the continuity/insulation of the electrical connection between the boot lid switch and the Body Computer node. See    See E7015 ALARM
3COMPONENT OPERATION CHECKAll OKProblems encounteredOperation
Disconnect the connector, body computer node side, and check for the presence of the boot lid open/closed signal. See    See E7015 ALARMMove on to Step 4Boot lid electrical switch not working.Replace the boot lid lock    See E7015 ALARM
4CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsReplace the body computer node    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.Search for the fault, starting from another symptom