STRUCTURE

• A gateway function has been integrated to ETACS-ECU as the network central ECU (Refer to GROUP 54A - ETACS-ECU ).
  
• The CAN system consists of the following two networks: CAN-C (high-speed power train network) and CAN-C-Mid (middle-speed body network). Each ECU is connected to one of the networks depending on its functions.
  
• The CAN bus line consists of two lines, CAN_L and CAN_H (CAN Low and CAN High, respectively), as well as two terminal resistors (A twisted-pair cable, highly resistant to noise, is used for the communications line).
  
• The CAN bus line connecting two dominant ECUs is the main bus line, and the CAN bus line connecting each ECU is the sub-bus line.
  
• With CAN bus, the terminal resistors are incorporated in ECU. Resistors with approximately 120 Ω is used for the dominant ECU.
  

  note	Dominant ECU: ETACS-ECU, engine ECU and Combination meter. Non-dominant ECU: ECU and sensor on CAN network, excluding ETACS-ECU, engine ECU and Combination meter.

• To the CAN bus line, ECU, sensor, and diagnosis connector are connected as follows for each network.
  
CAN-C

• ETACS-ECU
  
• Steering wheel sensor
  
• 4WD-ECU <4WD>
  
• SRS-ECU
  
• ABS-ECU <vehicles without ASC> or ASC-ECU <vehicles with ASC>
  
• CVT-ECU
  
• EPS-ECU
  
• Diagnosis connector
  
• Engine-ECU
  
CAN-C-Mid

• ETACS-ECU
  
• OSS-ECU <vehicles with OSS>
  
• A/C-ECU
  
• KOS-ECU <vehicles with KOS>
  
• Radio and CD player <vehicles with radio and CD player>
  
• Electric tailgate control unit <vehicles with electric tailgate>
  
• CAN box unit <vehicles with MMCS>
  
• Corner sensor/back sensor-ECU <vehicles with reversing sensor system>
  
• Combination meter