DTC U1002: Lost Communication with Gateway Module (Network Gateway ECU); DTC U0265: Lost Communication with Parking Assist Monitor Module [08/2015 - ]: Description

The network gateway ECU will store this DTC when no signals are received from the ECUs that have been memorized as those that are connected to sub bus 2.
When the network gateway ECU receives a response signal from the ECUs connected to sub bus 2, the network gateway ECU recognizes and memorizes that the ECU is connected to sub bus 2. Based on this memorized data, the network gateway ECU monitors for malfunctions in the ECUs connected to sub bus 2 when communicating with those ECUs. If the network gateway ECU does not receive response signals from the ECUs that have been memorized as those connected to sub bus 2, the network gateway ECU determines that a malfunction exists.

DTC No.	DTC Detection Condition	Trouble Area
U1002	The network gateway ECU does not receive signals from all ECUs that have been memorized as those connected to sub bus 2.	Open or short in sub bus 2 main lines or connector Open or short in sub bus 2 branch lines or connector Network gateway ECU Rear television camera assembly1 Driving support ECU assembly2 Lane departure warning camera2 Blind spot monitor sensor RH3 Open or short in CAN No. 3 junction connector Open or short in CAN No. 5 junction connector Open or short in CAN No. 6 junction connector Open or short in CAN No. 7 junction connector Open or short in CAN No. 8 junction connector
U0265	No communication from the rear television camera assembly continues.	Rear television camera assembly branch line or connector Power source circuit of rear television camera assembly Rear television camera assembly ground circuit Rear television camera assembly

HINT:

This diagnosis procedure is for when DTC U1002 is output by the network gateway ECU (Techstream display: Gateway).