Inspection Procedure

HINT: 

If "+B of GND short malfunction of communication bus" DTCs (B1266 and B1267) are detected at the same time as "communication stop" DTC B1271, repair the "+B or GND short malfunction of communication bus" DTCs first. Refer to DTC B1266: Short to B+ in Instrument Panel System Communication Bus Malfunction; DTC B1267: Short to GND in Instrument Panel System Communication Bus Malfunction .