Diagnostic Trouble Code Chart

CAN MS bus (Main body ECU output code)

DTC TROUBLE AREA CHART

DTC Code	Detection Item	Trouble Area
U0230	Lost Communication with Rear Gate Module	Back door ECU branch wire or connector Back door ECU power source circuit Back door ECU
U0327	Software Incompatibility with Vehicle Security Control Module	Certification ECU branch wire or connector Certification ECU power source circuit Certification ECU
U1002 (CAN MS BUS)	Lost Communication with Gateway Module (Main body ECU)	Open or short in CAN MS bus main wire or connector Open or short in CAN MS bus branch wire or connector Certification ECU Back door ECU Main body ECU CAN junction connector RR