198002308 - N046 PARKING DEVICE BUZZER NOT WORKING

		TEST RESULTS
0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the parking sensors are not deactivated using the dedicated button in the control panel	Move on to Step 1	Sensors deactivated	Restore the correct operation of the sensors
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner to the parking sensors node and check for the presence of errors	Move on to Step 2	Presence of errors	Proceed as instructed by the diagnostic tester
2	TRAILER CONTROL UNIT CONNECTION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the trailer control unit input preparation is not enabled    See E3090 PARKING SENSOR	Move on to Step 3	Input from trailer control unit enabled	Restore correct operation.
3	CHECK ON OPERATION OF FRONT PARKING SENSORS DISABLING BUTTON	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the parking sensors disabling button is working properly    See E3090 PARKING SENSOR	Move on to Step 4	1. Button defective2. Button wiring short circuited to earth	1. Replace the button2. Restore correct wiring.
4	BUZZER WIRING CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity and the insulation of the wiring connecting the buzzer to the parking sensor control unit    See E3090 PARKING SENSOR	Move on to Step 5	1. Wiring broken2. Wiring short-circuited	1. Restore the correct continuity2. Restore the correct insulation.
5	FRONT BUZZER OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the efficiency of the buzzer    See Test 5580HE FRONT BUZZER OPERATION CHECK	Move on to Step 6	Buzzer defective	Replace buzzer
6	REAR BUZZER OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the efficiency of the buzzer    See Test 5580HD REAR BUZZER OPERATION CHECK	Move on to Step 7	Buzzer defective	Replace buzzer
7	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the NSP power supply is efficient    See E3090 PARKING SENSOR	Move on to Step 8	Power supply defective	Restore correct power supply    See E3090 PARKING SENSOR
8	CORRECT OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis	The fault persists	Replace the NSP control unit    Op. 5580H10 PARKING OBSTACLE DETECTION DEVICE ELECTRONIC CONTROL UNIT - R.R.