MULTIPLEX COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE CHART

If a trouble code is displayed during DTC check, check the circuit corresponding to the code in the table below. Proceed to the page given for the circuit.

Multiplex Communication System
DTC Code	Detection Item	See page
B1200	MPX Body ECU Stop	Click here
B1206	P/W Master Switch Communication Stop	Click here
B1207	Smart ECU Stop	Click here
B1208	Passenger Side Outer Mirror ECU	Click here
B1209	Driver Side Outer Mirror	Click here
B1210	Power ECU Stop	Click here
B1213	Tilt and Telescopic ECU Communication Stop	Click here
B1214	Short to B+ in Door System Communication Bus Malfunction	Click here
B1215	Short to GND in Door System Communication Bus Malfunction	Click here
B1249	Double Locking ECU Communication Stop	Click here
B1262	A/C ECU Communication Stop	Click here
B1266	Short to B+ in Instrument Panel System Communication Bus Malfunction	Click here
B1267	Short to GND in Instrument Panel System Communication Bus Malfunction	Click here
B1271	Combination Meter ECU Communication Stop	Click here
B1272	Power Seat ECU Communication Stop	Click here
B1273	Sliding Roof ECU Communication Stop	Click here
B1278	Combination Switch ECU Communication Stop	Click here
B1279	Rain Sensor Communication Stop	Click here
B1280	Left Side Junction Block ECU Communication Stop	Click here
B1289	Passenger Seat ECU Communication Stop	Click here
B1296	Front Light ECU Communication Stop	Click here
B1297	Clearance Sonar ECU Communication Stop	Click here
B1248	AVC-LAN Communication Impossible	Click here

When "+B or GND short malfunction of communication bus" DTCs (B1214 and B1215) are detected at the same time as "communication stop" DTCs (B1200, B1206, B1207, B1208, B1209, B1210, B1213, B1272, B1273, B1278, B1279, B1280,B1289 and B1296), perform troubleshooting for the "+B or GND short malfunction of communication bus" DTCs first.

When "+B or GND short malfunction of communication bus" DTCs (B1266 and B1267) are detected at the same time as "communication stop "DTCs (B1247, B1262, B1271 AND B1297), perform troubleshooting for the "+B or GND short malfunction of communication bus" DTCs first.