2398893 - N46 PARKING DEVICE BUZZER NOT WORKING

The Parking Sensor Node (NSP) receives a reversing signal from the body computer node via the CAN line
Results of the tests
0PRELIMINARY CHECKAll OKProblems metOperation
Check that the fault is not attributable to only one of the sensors located on the rear bumper.Continue to Step 1Fault detected on one or some ultrasound sensors. Continue to Step 14
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Using the Examiner, check in the 'Parking Sensor Node' environment, that there are no errors, and for the presence of and variations in the following parameters:

  • Reverse gear engaged.
  • Tow hook
Continue to Step 6Impossible to connect with the control unit.Continue to Step 2
Errors present.Continue to Step 5
The value of the parameter does not change. Continue to Step 12
Tow hook fittedContinue to Step 13
2ELECTRIC POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Climate Control Node electrical power supply is correct See   E3090  PARKING SENSOR Continue to Step 3Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
3CHECK ELECTRICAL CONNECTIONSAll OKProblems metOperation
Check the electrical connections at the Parking Sensor Node, in particular that each individual pin is correctly connected.Continue to Step 4Electrical connections not working.Restore damaged electrical connections. See   E3090  PARKING SENSOR
4CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check the possibility of connecting with the Parking Sensor Node. Continue to Step 1Impossible to connect with the control unit Replace the control unit
5ERRORS CHECKAll OKProblems metOperation

Using the Examiner in the Parking Sensor Node ambient, check whether one or more of the following errors is present:

  • Error inside the control unit
  • CAN line
  • Reverse control
  • Ultrasound sensors
End of diagnosisError detected inside the control unit.Replace the control unit.
Error on CAN line Continue according to the instructions for the diagnostic equipment.
Reverse gear faulty. Continue to Step 12
Ultrasound sensors faultyContinue to Step 14
6CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner check, in the Instrument Panel Node ambient, that there are no errors and the following parameters are present. Continue to Step 7Impossible to connect with the control unit.Continue as instructed See table   K95  WARNING LIGHT SYMBOLS DO NOT COME ON
Errors present.Continue as instructed See table   K95  WARNING LIGHT SYMBOLS DO NOT COME ON
7CHECK WITH ACTIVE DIAGNOSISAll OKProblems metOperation
With the Examiner in the Instrument Panel Node ambient, check, in active diagnosis, that the buzzer is correctly activated Continue to Step 14The component in question is not activated. Not controlled by the active diagnosis. Replace the Instrument Panel Node control unit
8CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner check, in the Body Computer Node ambient, for errors and for the presence of and variations in the reverse gear engaged parameter..Continue to Step 10Impossible to connect with the control unit.Continue to Step 9
Errors present. Continue according to the instructions for the diagnostic equipment.
The value of the parameter does not change. Continue to Step 12
9ELECTRICAL POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Body Computer Node electrical power supply is correct See   E1050  CAN CONNECTION LINES Continue to Step 13Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
10CHECK ELECTRICAL CONNECTIONSAll OKProblems metOperation
Check the electrical connections / leads between NSP, NBC and NQS, in particular that each individual pin is correctly connected. See   E1050  CAN CONNECTION LINES Continue to Step 14Electrical connections not working.Restore damaged electrical connection.
11CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check the possibility of connecting with the Body Computer Node. Continue to Step 11Impossible to connect with the control unit Replace the control unit.
12OPERATION CHECKAll OKProblems metOperation
Check the condition of the wiring, system and reverse gear engaged sensor on the gearbox See   E2022  REVERSING LIGHTS Continue to Step 8Wiring faulty Restore the correct operation of the wiring
Reverse gear sensor not working.Replace faulty component
13CHECK TRAILERAll OKProblems metOperation
Check the efficiency of the trailer presence enablement See   E3090  PARKING SENSOR Continue to Step 3Inefficient connectionRenew the wiring
14CHECK THE SYSTEM EFFICIENCYAll OKProblems metOperation
Check the efficiency of the Parking Sensor Node See Test   5580HB  Check operation of Parking Sensor System Continue to Step 16Fault in supply wiring.Continue to Step 3
Fault in wiring on bumper sensors.Continue to Step 15
Bumper sensor(s) not working.Continue to Step 15
15CHECK ON ULTRASOUND SENSORSAll OKProblems metOperation
Check the correct operation of the ultrasound sensor(s) circuit See   E3090  PARKING SENSOR Continue to Step 16Connection cables faulty.Renew the wiring.
Fault in supply to ultrasound sensor(s). Replace parking sensor control unit.
Ultrasound sensor(s) does not workReplace ultrasound sensor(s).
16CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persists Continue to Step 1