CAN BUS DIAGNOSTICS TABLE


caution During diagnosis, a diagnosis code 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 diagnosis code(s). If diagnosis code(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.
M.U.T.-III screen
 Diagnosis detail
Comment
 Reference page
 Reference page
(The ECUs that are not adopted are not displayed.)


Failure in red displayed area is estimated.
 Diagnosis Item 1
Communication with no ECUs is possible (MAIN).
 The other service procedures are the same as before
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 -
 Diagnosis Item 2*1
Diagnose shorts in the power supply to CAN bus line (MAIN). <Vehicles for RHD>
Diagnosis Item 2*1
Diagnose shorts in the power supply to CAN bus line (MAIN). <Vehicles for LHD>
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 -
 Diagnosis Item 3*1
Diagnose shorts in the earth to CAN bus line (MAIN). <Vehicles for RHD>
Diagnosis Item 3*1
Diagnose shorts in the earth to CAN bus line (MAIN). <Vehicles for LHD>
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 -
 Diagnosis Item 4*1
Diagnose shorts between CAN_H and L lines (MAIN). <Vehicles for RHD>
Diagnosis Item 4*1
Diagnose shorts between CAN_H and L lines (MAIN). <Vehicles for LHD>


Failure in red displayed area is estimated.
 Diagnosis Item 5
Communication with no ECUs is possible (SUB). <Vehicles with automatic A/C>
 The other service procedures are the same as before
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 -
 Diagnosis Item 6*2
Diagnose shorts in the power supply to CAN bus line (SUB). <Vehicles with automatic A/C>
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 -
 Diagnosis Item 7*2
Diagnose shorts in the earth to CAN bus line (SUB). <Vehicles with automatic A/C>
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 -
 Diagnosis Item 8*2
Diagnose shorts between CAN_H and L lines (SUB). <Vehicles with automatic A/C>


Disconnection in red displayed area is estimated.
 Diagnosis Item 9
Diagnose when the M.U.T.-III cannot receive the data sent by ETACS-ECU. <Vehicles for RHD>
 The other service procedures are the same as before
Diagnosis Item 9
Diagnose when the M.U.T.-III cannot receive the data sent by ETACS-ECU. <Vehicles for LHD>



Disconnection in red displayed area is estimated.
 Diagnosis Item 10
Diagnose when the M.U.T.-III cannot receive the data sent by gateway-ECU. <Vehicles with automatic A/C, 4WD and 5M/T for RHD>
 The other service procedures are the same as before
Diagnosis Item 10
Diagnose when the M.U.T.-III cannot receive the data sent by gateway-ECU. <Vehicles with automatic A/C, 4WD and 5M/T for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 11
Diagnose when the M.U.T.-III cannot receive the data sent by steering wheel sensor. <Vehicles with ASTC for RHD>
 The other service procedures are the same as before
Diagnosis Item 11
Diagnose when the M.U.T.-III cannot receive the data sent by steering wheel sensor. <Vehicles with ASTC for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 12
Diagnose when the M.U.T.-III cannot receive the data sent by transfer-ECU. <Vehicles with 4WD for RHD>
 The other service procedures are the same as before
Diagnosis Item 12
Diagnose when the M.U.T.-III cannot receive the data sent by transfer-ECU. <Vehicles with 4WD for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 13
Diagnose when the M.U.T.-III cannot receive the data sent by combination meter. <Vehicles for RHD>
 The other service procedures are the same as before
Diagnosis Item 13
Diagnose when the M.U.T.-III cannot receive the data sent by combination meter. <Vehicles for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 14
Diagnose when the M.U.T.-III cannot receive the data sent by KOS&OSS-ECU. <Vehicles with keyless operation system for RHD>
 The other service procedures are the same as before
Diagnosis Item 14
Diagnose when the M.U.T.-III cannot receive the data sent by KOS&OSS-ECU. <Vehicles with keyless operation system for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 15
Diagnose when the M.U.T.-III cannot receive the data sent by SRS-ECU. <Vehicles for RHD>
Diagnosis Item 15
Diagnose when the M.U.T.-III cannot receive the data sent by SRS-ECU. <Vehicles for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 16
Diagnose when the M.U.T.-III cannot receive the data sent by clearance warning control unit. <Vehicles with ultrasonic misacceleration mitigation, blind spot warning or corner sensor system for RHD>
 The other service procedures are the same as before
Diagnosis Item 16
Diagnose when the M.U.T.-III cannot receive the data sent by clearance warning control unit. <Vehicles with ultrasonic misacceleration mitigation, blind spot warning or corner sensor system for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 17
Diagnose when the M.U.T.-III cannot receive the data sent by A/T-ECU. <Vehicles with A/T for RHD>
Diagnosis Item 17
Diagnose when the M.U.T.-III cannot receive the data sent by A/T-ECU. <Vehicles with A/T for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 18
Diagnose when the M.U.T.-III cannot receive the data sent by electric parking brake-ECU. <Vehicles with electric parking brake system for RHD>
 The other service procedures are the same as before
Diagnosis Item 18
Diagnose when the M.U.T.-III cannot receive the data sent by electric parking brake-ECU. <Vehicles with electric parking brake system for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 19
Diagnose when the M.U.T.-III cannot receive the data sent by ABS-ECU <Vehicles without ASTC for RHD> or ASTC-ECU. <Vehicles with ASTC for RHD>
 The other service procedures are the same as before
Diagnosis Item 19
Diagnose when the M.U.T.-III cannot receive the data sent by ABS-ECU <Vehicles without ASTC for LHD> or ASTC-ECU. <Vehicles with ASTC for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 20
Diagnose when the M.U.T.-III cannot receive the data sent by FCM-ECU. <Vehicles with forward collision mitigation system for RHD>
 The other service procedures are the same as before
Diagnosis Item 20
Diagnose when the M.U.T.-III cannot receive the data sent by FCM-ECU. <Vehicles with forward collision mitigation system for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 21
Diagnose when the M.U.T.-III cannot receive the data sent by engine-ECU. <Vehicles for RHD>
Diagnosis Item 21
Diagnose when the M.U.T.-III cannot receive the data sent by engine-ECU. <Vehicles for LHD>


Disconnection in red displayed area is estimated.
 Diagnosis Item 22
Diagnose when the M.U.T.-III cannot receive the data sent by headlamp levelling-ECU. <Vehicles with auto headlamp levelling system>
 The other service procedures are the same as before


Disconnection in red displayed area is estimated.
 Diagnosis Item 23
Diagnose when the M.U.T.-III cannot receive the data sent by camera-ECU. <Vehicles with multi around monitor system>
 The other service procedures are the same as before


Disconnection in red displayed area is estimated.
 Diagnosis Item 24
Diagnose when the M.U.T.-III cannot receive the data sent by A/C-ECU. <Vehicles with automatic A/C>
 The other service procedures are the same as before


Disconnection in red displayed area is estimated.
 Diagnosis Item 25
Diagnose when the M.U.T.-III cannot receive the data sent by e-Call control unit. <Vehicles for RUSSIA>


Disconnection in red displayed area is estimated.
 Diagnosis Item 26
Diagnose when the M.U.T.-III cannot receive the data sent by smartphone link display audio. <vehicles for RUSSIA, AUSTRALIA and NEW ZEALAND>
note
  • *1: diagnosis items 2, 3 and 4 should be checked AFTER the cause of the fault is determined in diagnosis item 1 "Communication with no ECUs is possible".
  • *2: diagnosis items 6, 7 and 8 should be checked AFTER the cause of the fault is determined in diagnosis item 5 "Communication with no ECUs is possible".