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.


M.U.T.-III screen

Diagnosis detail
Reference page
(The ECUs that are not adopted are not displayed.)
Comment


Short circuit to battery in red displayed area is estimated.
Diagnosis Item 1
Diagnose shorts in the power supply to CAN bus line

Earthing in red displayed area is estimated.
Diagnosis Item 2
Diagnose shorts in the earth to CAN bus line

Short circuit between CAN_H and CAN_L in red displayed area is estimated.
Diagnosis Item 3
Diagnose shorts between CAN_H and L lines



Open circuit is suspected in the red section.
Diagnosis Item 4
Diagnose the terminator resistors

A defective terminator resistor is suspected.


Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 5
Diagnose when the M.U.T.-III cannot receive the data sent by ETACS-ECU.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 6
Diagnose when the M.U.T.-III cannot receive the data sent by combination meter.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 7
Diagnose when the M.U.T.-III cannot receive the data sent by ASC-ECU.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 8
Diagnose when the M.U.T.-III cannot receive the data sent by EPS-ECU.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 9
Diagnose when the M.U.T.-III cannot receive the data sent by steering wheel sensor.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 10
Diagnose when the M.U.T.-III cannot receive the data sent by G and yaw rate sensor.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 11
Diagnose the lines between the joint connectors (CAN1 and CAN2)



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 12
Diagnose when the M.U.T.-III cannot receive the data sent by EV-ECU.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 13
Diagnose when the M.U.T.-III cannot receive the data sent by inverter.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 14
Diagnose when the M.U.T.-III cannot receive the data sent by BMU.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 15
Diagnose when the M.U.T.-III cannot receive the data sent by on board charger/DC-DC converter.



Harness disconnection or loose connection in red displayed area is estimated.
Diagnosis Item 16
Diagnose when the M.U.T.-III cannot receive the data sent by A/C control unit.