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WIRING DIAGRAM - CAN CONNECTION LINES - Fiat GRANDE PUNTO 1.2 8v
COMPONENTS - CAN CONNECTION LINES - Fiat GRANDE PUNTO 1.2 8v
| Component code | Description | Reference to the operation |
| B001 | JUNCTION UNIT | |
| B099 | MAXI FUSE BOX ON BATTERY | |
| D021 | DASHBOARD/AIR CONDITIONING-HEATER COUPLING | - |
| C015 | DASHBOARD EARTH, DRIVER'S SIDE | - |
| D107 | DASHBOARD-REAR/ENGINE SERVICES COUPLING | - |
| E050 | INSTRUMENT PANEL | |
| H001 | IGNITION SWITCH | |
| K074 | SLEWING SENSOR (VDC) | |
| M001 | BODY COMPUTER | |
| M010 | ENGINE MANAGEMENT ECU | |
| M047 | TYRE INFLATION PRESSURE CONTROL UNIT | |
| M050 | ABS CONTROL UNIT | |
| M060 | AIR BAG CONTROL UNIT | |
| M070 | CLIMATE CONTROL SYSTEM CONTROL UNIT | |
| M075 | ADDITIONAL HEATER CONTROL UNIT | |
| M084 | PARKING SENSOR CONTROL UNIT | |
| M086 | ELECTRIC STEERING CONTROL UNIT | |
| M162 | BLUETOOTH CONTROL UNIT | |
| P020 | RADIO | |
| R010 | MULTIPLE TESTER CONNECTION | - |
COMPONENT LOCATION - CAN CONNECTION LINES - Fiat GRANDE PUNTO 1.2 8v
| Component code | Description | Reference to the operation |
| B001 | JUNCTION UNIT | |
| B099 | MAXI FUSE BOX ON BATTERY | |
| D021 | DASHBOARD/AIR CONDITIONING-HEATER COUPLING | - |
| C015 | DASHBOARD EARTH, DRIVER'S SIDE | - |
| D107 | DASHBOARD-REAR/ENGINE SERVICES COUPLING | - |
| E050 | INSTRUMENT PANEL | |
| H001 | IGNITION SWITCH | |
| K074 | SLEWING SENSOR (VDC) | |
| M001 | BODY COMPUTER | |
| M010 | ENGINE MANAGEMENT ECU | |
| M047 | TYRE INFLATION PRESSURE CONTROL UNIT | |
| M050 | ABS CONTROL UNIT | |
| M060 | AIR BAG CONTROL UNIT | |
| M070 | CLIMATE CONTROL SYSTEM CONTROL UNIT | |
| M075 | ADDITIONAL HEATER CONTROL UNIT | |
| M084 | PARKING SENSOR CONTROL UNIT | |
| M086 | ELECTRIC STEERING CONTROL UNIT | |
| M162 | BLUETOOTH CONTROL UNIT | |
| P020 | RADIO | |
| R010 | MULTIPLE TESTER CONNECTION | - |
DESCRIPTION - CAN CONNECTION LINES - Fiat GRANDE PUNTO 1.2 8v
This vehicle is equipped with a CAN (Controller Area Network) system of electrical connections: it involves a software and hardware solution which is designed to manage the resources on the vehicle efficiently allowing:- the sharing of information between the various electronic units;- the intergration of several electronic units through one network;- a high network information exchange speed;- advantages in economic terms because there is a considerable reduction in the wiring/connectors inside the vehicle;- higher standards in terms of quality and reliability.The advantage of using a CAN system stems from the fact that communication takes place between numerous control units and consequently the number of signals to be managed is very high.For this reason the signals travel on a CAN type serial Bus where one wire is high level (H) and the other low level (L); these signals on the CAN Bus are differential types, i.e. the value assigned to the bit is represented by the difference between the CAN-H and CAN-L voltage levels.The different electronic units which make up the system, known as network nodes, are connected to the CAN by means of communication interfaces known as transreceivers; these connection interfaces, integrated in the electronic units, constitute the gate for sending/reading the information at the CAN or at the serial lines.The exchange of information at CAN type serial lines is only possible using a transmission protocol which is the collection of rules that allow communication between two or more nodes by means of the exchange of information or "data packages".The main element of the network is the Body Computer.The Body Computer node is entrusted with "waking up the network" at key on (if there is a problem with the Body Computer this task is entrusted to the instrument panel).The Body Computer also carries out the functions of checking the network which make it possible to provide information on:- the network activities status;- the functional failure status of the individual electronic units (nodes);- a possible CAN fault.The various electronic units process the various signals coming from the corresponding sensors both for their own management and for other control units to which they are sent via the CAN.The specific structure adopted for this vehicle consists of two CAN communication networks which connect nodes belonging to two different areas:- C-CAN for dynamic vehicle control (high speed): bus CAN-H and CAN-L;- B-CAN for the management of standard body functions (low speed): bus CAN-A and CAN-B;the two CAN communication networks are connected to one another by a gateway for transferring joint information, located in the Body Computer Node.Diagnosis of nodes connected to the network - B-CAN and C-CAN - is carried out via the specific diagnostic connectorAn ISO 5 serial A-BUS is also connected to the rain sensorPower is distributed via the junction units and/or fuses boxes. These are connected to control elements (relays and static actuators) to ensure maximum electrical protection and minimum complexity.
FUNCTIONAL DESCRIPTION - CAN CONNECTION LINES - Fiat GRANDE PUNTO 1.2 8v
Body Computer M1 - connector G - is suplied directly from the battery by the line protected by maxifuse F2 of engine compartment control unit B1.Body Computer M1 is ignition-operated (INT) at pin 32 of connector D: this signal is used, amongst other things, to "wake up the network".Pin 10 of connector H of M1 supplies the Body Computer with a reference earth.The nodes connected to Body Computer M1 - from pins 38 and 53 of connector A - via the high speed C-CAN network are:- electric steering control unit M86 ;- yaw sensor K74 (only present on versions with ESP);- ABS/ESP control unit M50 ;- engine management control unit M10;The nodes connected to Body Computer M1 via the low speed B-CAN network - from pins 39 and 54 of connector A and pins 5 and 20 of connector B --are:- instrument panel E50;- radio P20 ;- Bluetooth control unit M162- Air Bag control unit M60 .- climate control sytem control unit M70;- supplementary heater control unit M75- parking sensor control unit M84- tyre pressure control unit M47.Central diagnostic socket R10 is connected to the C-CAN network at pins 52 and 37 of connector A of M1 and to the B-CAN network at pins 39 and 54 of connector A of M1.
