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



Disconnection in red displayed area is estimated.
Diagnosis Item 4
Diagnose the terminator resistors



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 RV meter <vehicles with RV 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 ABS-ECU <Vehicles with ABS> or ASTC-ECU <Vehicles with ASTC>



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 steering wheel sensor <Vehicles with ASTC>



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 G and yaw rate sensor <Vehicles with ASTC>



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 A/C-ECU. <vehicles with automatic-A/C>



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 A/T-ECU. <A/T>



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 engine-ECU.