Multiplex Communication System

If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table (Proceed to the appropriate troubleshooting given for that circuit).

HINT: When some of the DTC 15 is output, the DTC of other ECU communication stop is also output. In this case, please repair DTC 15 first. The following shows DTCs which are output when +B or GND short occurs on communication bus.