How To Proceed With Troubleshooting

NOTE: Refer to troubleshooting of each system if DTCs regarding the CAN communication system are not output.

CHECK AND CLEAR DTCS
CHECK FOR INSTALLED SYSTEMS (ECUS & SENSORS) THAT ADOPT CAN COMMUNICATION)
1. Check which of the following is installed: Dynamic laser cruise control. Parking assist monitor system.
CHECK CAN BUS LINE
1. See CHECK CAN BUS LINE .

CHECK INTELLIGENT TESTER VIA CAN VIM

Result

OUTPUT RESULT TABLE

Symptom	Proceed to
All the ECUs and sensors connected to the CAN communication system are displayed on the screen.	A
An ECU or sensor not connected to the CAN communication system is displayed on the screen.	B
More than one of the ECUs and sensors not connected to the CAN communication system are displayed on the screen. (If the displayed ECUs and sensors are only those relating to the `ENGINE' and `HV', proceed to B)	C

NOTE:

The systems (ECUs, sensors) that adopt CAN communication vary depending on the vehicle and option settings. Check which systems (ECUs, sensors) are installed on the vehicle (See DIAGNOSIS SYSTEM ).
Non-installed ECUs or sensors are not displayed. Do not mistake them for being in the communication stop mode.
If 2 or more ECUs or sensors are not displayed on the intelligent tester via the CAN VIM, perform troubleshooting for communication stop mode for each undisplayed ECU or sensor. (Open in one side of the CAN sub bus lines.)

A: Go to next step.

DTC COMBINATION TABLE
1. Confirm trouble according to the combination of output DTCs regarding the CAN communication system.
  HINT:
  
  Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on the intelligent tester's "BUS CHECK" screen via CAN VIM.
CIRCUIT INSPECTION
IDENTIFICATION OF PROBLEM
REPAIR OR REPLACE
CONFIRMATION TEST
END