CAN Communication
CAN COMMUNICATIONSystem Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Unit
NOTE: Confirming the presence of the following items helps to identify CAN system type.
- Models with 4WD
- Models with electronic locking rear differential
TYPE 1
System diagram
- Type 1
Input/output signal chart
NOTE: CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
TYPE 2
System diagram
- Type 2
Input/output signal chart
NOTE: CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
TYPE 3/TYPE 4
System diagram
- Type 3
- Type 4
Input/output signal chart
NOTE: CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
TYPE 5/TYPE 6
System diagram
- Type 5
- Type 6
Input/output signal chart
NOTE: CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.