On the Techstream, the Gateway item displays the DTCs for ECUs connected to sub bus 2.
When both the sub bus monitor ECU and the ECUs connected to the V bus store communication DTCs,
check and repair the corresponding sub bus first.
GO TO U1002 (Gateway)
GO TO DIAGNOSTIC TROUBLE CODE CHART
12. DTC COMBINATION TABLE
a) Confirm the problem according to the combination of output DTCs regarding the CAN communication
RESULT PROCEED TO
Combination of DTCs is not in DTC Combination Table A
Combination of DTCs is in DTC Combination Table B
CAN communication system history DTCs may indicate the problem if CAN communication system DTCs are
output and all ECUs and sensors connected to the CAN communication system are displayed on CAN Bus
Check of the Techstream.
GO TO COMMUNICATION STOP MODE TABLE
13. IDENTIFICATION OF PROBLEM (PAST MALFUNCTION IN MAIN BUS OF V BUS)
(a) Connect the cable to the negative (-) battery terminal.
(b) Clear the DTCs using the Techstream.
(c) Perform the tests in Symptom Simulation to check the wire harnesses and connectors including those
for V bus main bus lines .
(d) Based on the results of the check, inspect the parts that output DTCs to determine the
If DTCs are output, do not turn the ignition switch off.