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CAN BUS DIAGNOSTICS TABLE
 
 
cautionDuring diagnosis, a DTC associated with another system may be set when the ignition switch is turned on with connector(s) disconnected. After completing the repair, confirm all systems for DTC(s). If DTC(s) are set, erase them all.
This diagnosis applies only to the CAN bus lines. If a different system is defective, proceed to the applicable diagnosis section for each system. Observe the diagnosis procedure below only when the CAN bus line is defective.
 
 
Scan tool screenDiagnostics detailReference page
(The ECUs that are not adopted are not displayed.)Comment
Failure in red displayed area is estimated.Diagnostic Item 1
Communication with no ECUs is possible (CAN-C).
--Diagnostic Item 2*1
Diagnose shorts in the power supply to CAN-C.
--Diagnostic Item 3*1
Diagnose shorts in the ground to CAN-C.
--Diagnostic Item 4*1
Diagnose shorts between CAN_H and L lines (CAN-C).
CAN-C*3: Failure in red displayed area is estimated.Diagnostic Item 5
Communication with no ECUs is possible (GW-CAN-C). <Vehicles with Blind Spot Warning [BSW] (with Lane Change Assist) system>
--Diagnostic Item 6*2
Diagnose shorts in the power supply to GW-CAN-C. <Vehicles with Blind Spot Warning [BSW] (with Lane Change Assist) system>
--Diagnostic Item 7*2
Diagnose shorts in the ground to GW-CAN-C. <Vehicles with Blind Spot Warning [BSW] (with Lane Change Assist) system>
--Diagnostic Item 8*2
Diagnose shorts between CAN_H and L lines (GW-CAN-C). <Vehicles with Blind Spot Warning [BSW] (with Lane Change Assist) system>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 9
Communication with no ECUs is possible (CAN-C-Mid).
--Diagnostic Item 10*2
Diagnose shorts in the power supply to CAN-C-Mid.
--Diagnostic Item 11*2
Diagnose shorts in the ground to CAN-C-Mid.
--Diagnostic Item 12*2
Diagnose shorts between CAN_H and L lines (CAN-C-Mid).
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 13
Diagnose when the scan tool cannot receive the data sent by ETACS-ECU.
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 14
Diagnose when the scan tool cannot receive the data sent by gateway-ECU. <Vehicles with Blind Spot Warning [BSW] (with Lane Change Assist) system>
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 15
Diagnose when the scan tool cannot receive the data sent by SRS-ECU.
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 16
Diagnose when the scan tool cannot receive the data sent by steering wheel sensor
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 17
Diagnose when the scan tool cannot receive the data sent by electric parking brake ECU. <Vehicles with electric parking brake>
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 18
Diagnose when the scan tool cannot receive the data sent by occupant classification-ECU.
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 19
Diagnose when the scan tool cannot receive the data sent by AWD-ECU <Vehicles without S-AWC> or AWC-ECU <Vehicles with S-AWC>. <AWD>
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 20
Diagnose when the scan tool cannot receive the data sent by FCM/LDW/AHB-ECU. <Vehicles with FCM>
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 21
Diagnose the lines between the joint connectors (CAN3 and CAN1).
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 22
Diagnose when the scan tool cannot receive the data sent by ASC-ECU.
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 23
Diagnose when the scan tool cannot receive the data sent by EPS-ECU.
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 24
Diagnose when the scan tool cannot receive the data sent by transaxle control module (TCM).
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 25
Diagnose the lines between the joint connectors (CAN1 and CAN2). <Vehicles with ACC>
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 26
Diagnose when the scan tool cannot receive the data sent by ACC-ECU. <Vehicles with ACC>
CAN-C: Failure in red displayed area is estimated.Diagnostic Item 27
Diagnose when the scan tool cannot receive the data sent by engine control module (ECM).
CAN-C*3: Failure in red displayed area is estimated.Diagnostic Item 28
Diagnose when the scan tool cannot receive the data sent by BSW-ECU. <Vehicles with Blind Spot Warning [BSW] (with Lane Change Assist) system>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 29
Diagnose when the scan tool cannot receive the data sent by OSS-ECU. <Vehicles with OSS>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 30
Diagnose when the scan tool cannot receive the data sent by KOS-ECU. <Vehicles with KOS>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 31
Diagnose when the scan tool cannot receive the data sent by smartphone link display audio <Vehicles with smartphone link display audio> or display audio <Vehicles with display audio>.
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 32
Diagnose when the scan tool cannot receive the data sent by 1CD audio. <Vehicles with 1CD audio>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 33
Diagnose when the scan tool cannot receive the data sent by A/C-ECU.
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 34
Diagnose when the scan tool cannot receive the data sent by power liftgate control unit. <Vehicles with power liftgate>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 35
Diagnose when the scan tool cannot receive the data sent by camera-ECU. <Vehicles with multi around monitor>
CAN-C-Mid: Failure in red displayed area is estimated.Diagnostic Item 36
Diagnose when the scan tool cannot receive the data sent by combination meter.
note
  • *1: Diagnostic Items 2, 3 and 4 should be checked after the cause of the fault is determined in diagnostic Item 1 "Communication with no ECUs is possible (CAN-C)".
  • *2: Diagnostic Items 6, 7 and 8 should be checked after the cause of the fault is determined in diagnostic Item 5 "Communication with no ECUs is possible (CAN-C-Mid)".
  • *3: GW-CAN-C, which the BSW-ECU is connected to, is displayed as "CAN-C."