5505AH CHECK POWER SUPPLY TO THE PARKING SENSOR CONTROL UNIT (NSP) - Fiat - CROMA - eLearn

194004426 - 5505AH CHECK POWER SUPPLY TO THE PARKING SENSOR CONTROL UNIT (NSP)

STEP	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Check power supply (+30) With the key on, check for battery voltage between pin 1 of control unit connector LA and earth Check that the connector is correctly inserted in the other part. Try to move it from its seat by making small movements in all directions, grasping the connector body in your fingers and the wiring in your hand. The connector must stay in place Exercise a moderate pulling force. The connector must stay in place Check whether the power supply goes off, on and/or viceversa (touching/not touching) Pull the lead and check the stability in the groove (should not move back): exercise repeated pull-push-pull cycles on the lead and ensure its immobility. Examine the crimping:Use a lens to examine the terminal crimping area. The barrels must be turned symmetrically and no strands should emerge from the crimped area. The bare wire section under the barrels must emerge by 0.5.	-If blown, replace fuse F49 in the facia control unit after identifying the cause-Restore the wiring between the facia control unit and parking sensor node
2	Check the earthDisconnect the 16-way LA connector and connect an ohmmeter across pin 8 and earth to check the resistance is less than 1 ohm	Restore the earth connection

STEP

CHECK TO BE PERFORMED

RESOLUTION IF THE CHECK IS NOT OK

Check power supply (+30)

With the key on, check for battery voltage between pin 1 of control unit connector LA and earth
Check that the connector is correctly inserted in the other part.
Try to move it from its seat by making small movements in all directions, grasping the connector body in your fingers and the wiring in your hand. The connector must stay in place
Exercise a moderate pulling force. The connector must stay in place
Check whether the power supply goes off, on and/or viceversa (touching/not touching)
Pull the lead and check the stability in the groove (should not move back): exercise repeated pull-push-pull cycles on the lead and ensure its immobility.

Examine the crimping:Use a lens to examine the terminal crimping area. The barrels must be turned symmetrically and no strands should emerge from the crimped area. The bare wire section under the barrels must emerge by 0.5.

-If blown, replace fuse F49 in the facia control unit after identifying the cause-Restore the wiring between the facia control unit and parking sensor node

Check the earthDisconnect the 16-way LA connector and connect an ohmmeter across pin 8 and earth to check the resistance is less than 1 ohm

Restore the earth connection

AB connector pinout1. Frontal sensor earth2. Frontal sensor power supply3. Acoustic signal negative signal (front buzzer)4. Acoustic signal power supply (front buzzer)5. Left outer front sensor signal6. Left inner front sensor signal7. Right inner front sensor signal8. Right outer front sensor signal9. N.C.10. N.C.11. N.C.12. N.C.LC connector pinout1. Rear sensor earth2. Right rear inner sensor signal3. Left inner rear sensor signal4. Right outer rear sensor signal5. Left rear outer sensor signal6. Rear sensor positive7. Left inner rear sensor earth8. Right outer rear sensor signal9. Left outer rear sensor signal10. Left inner rear sensor supply11. Right outer rear sensor supply12. Left outer rear sensor supplyLA connector pinout1. +12 V ignition-operated2. Rear buzzer negative signal3. N.C.4. Front sensor deactivation button5. Negative signal from trailer control unit to cut out NSP6. N.C.7. B - CAN A8. Earth9. N.C.10. Rear buzzer power supply11. N.C.12. N.C.13. Front sensor deactivation signal led14. B - CAN B15. N.C.16. N.C.