WIRING DIAGRAM - PARKING SENSOR - Fiat GRANDE PUNTO 1.2 8v
COMPONENTS - PARKING SENSOR - Fiat GRANDE PUNTO 1.2 8v
| Component code | Description | Reference to the operation |
| B001 | JUNCTION UNIT | |
| B099 | MAXI FUSE BOX ON BATTERY | |
| C015 | DASHBOARD EARTH, DRIVER'S SIDE | - |
| D089 | PARKING SENSOR COUPLING | - |
| D097 | SHORT CIRCUITING COUPLING | - |
| E050 | INSTRUMENT PANEL | |
| H001 | IGNITION SWITCH | |
| K097 | PARKING SENSORS | |
| M001 | BODY COMPUTER | |
| M084 | PARKING SENSOR CONTROL UNIT |
COMPONENT LOCATION - PARKING SENSOR - Fiat GRANDE PUNTO 1.2 8v
| Component code | Description | Reference to the operation |
| B001 | JUNCTION UNIT | |
| B099 | MAXI FUSE BOX ON BATTERY | |
| C015 | DASHBOARD EARTH, DRIVER'S SIDE | - |
| D089 | PARKING SENSOR COUPLING | - |
| D097 | SHORT CIRCUITING COUPLING | - |
| E050 | INSTRUMENT PANEL | |
| H001 | IGNITION SWITCH | |
| K097 | PARKING SENSORS | |
| M001 | BODY COMPUTER | |
| M084 | PARKING SENSOR CONTROL UNIT |
DESCRIPTION - PARKING SENSOR - Fiat GRANDE PUNTO 1.2 8v
The parking assistance system provides the driver with information, whilst reversing, on the distance from any objects behind the vehicle which could be out of their range of view.The information of the presence/distance of an obstacle is transmitted to the driver by means of acoustic warnings whose frequency depends on the distance of the vehicle from the obstacle.An electronic control unit activates and controls the operation of the sensors located in the rear bumper, processes the signals received and operates the buzzer in the instrument panel.The system is activated with reverse gear engaged: in these conditions, the control unit energizes the transducers and sends them a signal request, receiving the response signals.The reversing light activation signal is acquired by the engine control unit and sent via the CAN network to the Body Computer that forwards it via the CAN network to the parking sensor control unit.The sensors use ultrasound technology and act as intelligent transmitters/receivers with triangulation technology: allowing improved detection in critical situations or in the presence of small obstacles. The impulses emitted are reflected by any obstacles; the transducer receives an echo which is converted into a digital signal and sent to the electronic control unit.The signalling of the distance of the obstacle is achieved through intermittent impulse sound signals: the frequency of this signal increases gradually as the bumper approaches an obstacle: when the distance calculated goes below 30 cm, the sound becomes high pitched and constant; the acoustic signal stops when the distance of the obstacle increases.
FUNCTIONAL DESCRIPTION - PARKING SENSOR - Fiat GRANDE PUNTO 1.2 8v
The parking sensor control unit M84 receives a supply at pin 1 of connector A from the ignition-controlled INT line protected by fuse F61 of Body Computer M1; pin 8 of connector A is earthed.Body Computer M1 - connector G - is supplied directly from the battery via a line protected by maxifuse F2 of engine compartment control unit B1; its ignition-controlled supply (INT) is received at pin 2 of connector D; pin 10 of connector H or M1 supplies the Body Computer with a reference earth.The control unit is connected, via pins 7 and 4 of connector A and the CAN, to all the other nodes in the same network, for example receiving the information that reverse gear is engaged.The commands for the display are sent to the instrument panel via the CAN.The four front parking sensors K97 are connected to connector B of the control unit M84: pin 1 provides the reference earth, pin 2 the power supply, pins 5, 4, 3 and 2 are connected to sensors K97A, K97B, K97C and K97D, respectively.
