•
Communication speed: messages travel at a speed of 250 kbps (data arrive at nodes every
20 ms, i.e. 50 times/second).
CAN PROTOCOL (CONT. NETWORK AREA)
The communication protocol is CSMA/CD (Carrier Sense Multiple Access w/ Collision Detection).
In order to transmit, every nod must first check that the BUS (the connection among all devices) is free
before attempting to send a message with BUS (Carrier Sense).
If during this period there is no activity on BUS, every nod has the same chance to send a message
(Multiple Access). If two nodes start transmitting simultaneously, the nodes recognise the "colli-
sion" (Collision Detection) and initiate an exchange action based on message priority (messages remain
unaltered during exchange and there is no delay for high priority messages).
CAN protocol is based on messages and not on addresses. The message itself is divided into several
parts (frames), each of which has a meaning: message priority, data contained, error detection, recep-
tion confirmation, etc.
Every network nod receives all the messages sent through the BUS (with reception confirmation or error
messages) and each nod decides if the message is to be processed or rejected. Besides, every nod
can request information from the other nodes (RTR = Remote Transmit Request).
Level in electrical circuit diagram:
CAN line
Electrical specifications:
•
between PIN 66 and 80 of the control unit: approximately 130 Ohm
•
between PIN 26 and 27 of the instrument panel: approximately 120 Ohm
Pin out:
•
Line L: Orange cable between Marelli control unit PIN 66 and the black-bodied connector
PIN 27 of the instrument panel.
•
Line H: White/Black cable between Marelli control unit PIN 80 and the black-bodied con-
nector PIN 26 of the instrument panel.
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
DIAGNOSTICS INSTRUMENT: ELECTRICAL ERRORS
CAN line "Mute Node" U1601
•
Mute Node.
Error cause
•
The injection ECU cannot send CAN signals; it receives signals from the instrument panel
and the ABS control unit (if any): the control unit may need replacing.
Troubleshooting
CAPONORD 1200
Electrical system
ELE SYS - 189
Содержание CAPONORD 1200
Страница 1: ...MANUALE STAZIONE DI SERVIZIO 2Q000020 CAPONORD 1200 ...
Страница 6: ......
Страница 7: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 55: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Страница 62: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 73: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 74: ...Engine Troubleshooting CAPONORD 1200 TROUBL 74 ...
Страница 75: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 80: ...key 1 MULTIPLE CONNECTORS Electrical system CAPONORD 1200 ELE SYS 80 ...
Страница 83: ...key 1 MULTIPLE CONNECTORS CAPONORD 1200 Electrical system ELE SYS 83 ...
Страница 97: ...Control unit Unscrew and remove the control unit cover screws CAPONORD 1200 Electrical system ELE SYS 97 ...
Страница 185: ...Dashboard Grey bodied instrument panel pinout key 1 Live supply CAPONORD 1200 Electrical system ELE SYS 185 ...
Страница 194: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 209: ...See also Vehicle preparation Adjusting CAPONORD 1200 Engine from vehicle ENG VE 209 ...
Страница 210: ...INDEX OF TOPICS ENGINE ENG ...
Страница 294: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Страница 295: ...Fuel pump Injection CAPONORD 1200 Power supply P SUPP 295 ...
Страница 296: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 339: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 353: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 378: ...INDEX OF TOPICS CLUTCH SYSTEM CLU SYS ...
Страница 380: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Страница 388: ...INDEX OF TOPICS BODYWORK BODYW ...
Страница 428: ... Disconnect the voltage regulator Cut and remove the clamp Release the cables Bodywork CAPONORD 1200 BODYW 428 ...
Страница 429: ... Remove the relay box Cut and remove the clamp Remove the inside fairing CAPONORD 1200 Bodywork BODYW 429 ...
Страница 430: ...INDEX OF TOPICS ...
Страница 431: ...PRE DELIVERY PRE DE ...
Страница 439: ...Tyres 15 W Warning lights Water pump 383 Wiring diagram 79 ...