LS 430 V8-4.3L (3UZ-FE) (2002)
The gateway ECU forward data between BEANs and between a BEAN and AVC-LAN and transmits data between ECUs.
b. If DTC of ECU communication stop is output, connectors may be disconnected, or communication buses may be open at 2 points. It will not
become abnormal with only 1 communication bus open.
c. If 2 communication buses are open at the position as shown in the illustration, DTC of ECU communication stop between those 2 buses is
output.