CAN COMMUNICATION SYSTEM SYSTEM DIAGRAM
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OVERALL CAN BUS DIAGRAM (LHD)
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The CAN communication system is composed of 6 buses.
CAN Main Bus Line 
Terminating Resistor 
CAN Branch Line 
Bus Monitoring Direction *a Gateway Function Equipped ECU *b The type of connector will differ depending on the specifications of the vehicle. Connected to Code ECU/Sensor Name CAN DTC Storage Note - CGW Central Gateway ECU (Network Gateway ECU) - - V Bus DLC3 DLC3 - - Bus 2 ENG ECM Available - MET Combination Meter Assembly Available - EPS Power Steering ECU Assembly Available - A/C Air Conditioning Amplifier Assembly Available - SMT Certification ECU (Smart Key ECU Assembly) Available - MB Main Body ECU (Multiplex Network Body ECU) Available
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Gateway between the bus 2 and sub bus 1.
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Connected to the LIN communication system.
ASC Stereo Component Equalizer Assembly Available w/ ASC System BRK Skid Control ECU Assembly Available - YGS Yaw Rate Sensor - - SRS Airbag Sensor Assembly Available - STR Steering Sensor - - HV Hybrid Vehicle Control ECU Assembly Available - CAN J/C NO. 1 No. 1 CAN Junction Connector - - CAN J/C NO. 2 No. 2 CAN Junction Connector - - Bus 3 AV Radio Receiver Assembly Available w/ Navigation System or Audio and Visual System DCM Telematics Transceiver Available w/ Telematics Transceiver CAN J/C NO. 8 No. 8 CAN Junction Connector - - Bus 5 HV Hybrid Vehicle Control ECU Assembly Available - CS Clearance Warning ECU Assembly Available w/ LEXUS Parking Assist-sensor System SUS Absorber Control ECU Available w/ AVS System DS Driving Support ECU Assembly Available w/ Lexus Safety System + F-CAM Forward Recognition Camera Available w/ Lexus Safety System + F-MR Millimeter Wave Radar Sensor Assembly - w/ Lexus Safety System + BSM Blind Spot Monitor Sensor LH Available w/ Blind Spot Monitor System CAN J/C NO. 9 No. 9 CAN Junction Connector - - CAN J/C NO. 10 No. 10 CAN Junction Connector - - CAN J/C NO. 12 No. 12 CAN Junction Connector - - CAN J/C NO. 13 No. 13 CAN Junction Connector - - Sub Bus 1 MB Main Body ECU (Multiplex Network Body ECU) Available
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Gateway between the bus 2 and sub bus 1.
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Connected to the LIN communication system.
MIR-L Outer Mirror Control ECU Assembly (for Driver Side) Available w/ Seat Position Memory System MIR-R Outer Mirror Control ECU Assembly (for Front Passenger Side) Available w/ Seat Position Memory System T&T Multiplex Tilt and Telescopic ECU Available w/ Power Tilt and Power Telescopic System DST Front Power Seat Switch LH - w/ Seat Position Memory System R-CA Rear Television Camera Assembly Available w/ Parking Assist Monitor System without Parallel Parking Assist Function LIT No. 1 Headlight ECU Sub-assembly LH Available - ST Junction Terminal - - CAN J/C NO. 3 No. 3 CAN Junction Connector - - J/C NO. 15 No. 15 Junction Connector - - CAN J/C NO. 21 No. 21 CAN Junction Connector - - Sub Bus 15 ENG ECM Available - BRK Skid Control ECU Assembly Available - HV Hybrid Vehicle Control ECU Assembly Available - CAN J/C NO. 8 No. 8 CAN Junction Connector - - -
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OVERALL CAN BUS DIAGRAM (RHD)
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The CAN communication system is composed of 6 buses.
CAN Main Bus Line Terminating Resistor CAN Branch Line Bus Monitoring Direction *a Gateway Function Equipped ECU *b The type of connector will differ depending on the specifications of the vehicle. Connected to Code ECU/Sensor Name CAN DTC Storage Note - CGW Central Gateway ECU (Network Gateway ECU) - - V Bus DLC3 DLC3 - - Bus 2 ENG ECM Available - MET Combination Meter Assembly Available - EPS Power Steering ECU Assembly Available - A/C Air Conditioning Amplifier Assembly Available - SMT Certification ECU (Smart Key ECU Assembly) Available - MB Main Body ECU (Multiplex Network Body ECU) Available
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Gateway between the bus 2 and sub bus 1.
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Connected to the LIN communication system.
ASC Stereo Component Equalizer Assembly Available w/ ASC System BRK Skid Control ECU Assembly Available - YGS Yaw Rate Sensor - - SRS Airbag Sensor Assembly Available - STR Steering Sensor - - HV Hybrid Vehicle Control ECU Assembly Available - CAN J/C NO. 1 No. 1 CAN Junction Connector - - CAN J/C NO. 2 No. 2 CAN Junction Connector - - Bus 3 AV Radio Receiver Assembly Available w/ Navigation System or Audio and Visual System CAN J/C NO. 7 No. 7 CAN Junction Connector - - Bus 5 HV Hybrid Vehicle Control ECU Assembly Available - CS Clearance Warning ECU Assembly Available w/ LEXUS Parking Assist-sensor System SUS Absorber Control ECU Available w/ AVS System DS Driving Support ECU Assembly Available w/ Lexus Safety System + F-CAM Forward Recognition Camera Available w/ Lexus Safety System + F-MR Millimeter Wave Radar Sensor Assembly - w/ Lexus Safety System + BSM Blind Spot Monitor Sensor LH Available w/ Blind Spot Monitor System CAN J/C NO. 9 No. 9 CAN Junction Connector - - CAN J/C NO. 10 No. 10 CAN Junction Connector - - CAN J/C NO. 12 No. 12 CAN Junction Connector - - CAN J/C NO. 13 No. 13 CAN Junction Connector - - Sub Bus 1 MB Main Body ECU (Multiplex Network Body ECU) Available
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Gateway between the bus 2 and sub bus 1.
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Connected to the LIN communication system.
MIR-L Outer Mirror Control ECU Assembly (for Front Passenger Side) Available w/ Seat Position Memory System MIR-R Outer Mirror Control ECU Assembly (for Driver Side) Available w/ Seat Position Memory System T&T Multiplex Tilt and Telescopic ECU Available w/ Power Tilt and Power Telescopic System DST Front Power Seat Switch RH - w/ Seat Position Memory System R-CA Rear Television Camera Assembly Available w/ Parking Assist Monitor System without Parallel Parking Assist Function LIT No. 1 Headlight ECU Sub-assembly LH Available - ST Junction Terminal - - CAN J/C NO. 4 No. 4 CAN Junction Connector - - J/C NO. 15 No. 15 Junction Connector - - CAN J/C NO. 21 No. 21 CAN Junction Connector - - Sub Bus 15 ENG ECM Available - BRK Skid Control ECU Assembly Available - HV Hybrid Vehicle Control ECU Assembly Available - CAN J/C NO. 4 No. 4 CAN Junction Connector - - -
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