MULTIPLEX COMMUNICATION SYSTEM > DIAGNOSTIC TROUBLE CODE CHART

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If malfunction 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.


DTC No.	Detection Item	Trouble Area	See page
B1200	MPX Body ECU Stop	Instrument panel junction block (multiplex network body ECU) Wire harness	Click here
B1205	AFS ECU Communication Stop	AFS ECU Wire harness	Click here
B1206	P/W Master Switch Communication Stop	Multiplex network master switch assembly Wire harness	Click here
B1208	Passenger Side Outer Mirror ECU	Outer mirror control ECU RH Wire harness	Click here
B1209	Driver Side Outer Mirror	Outer mirror control ECU LH Wire harness	Click here
B1213	Tilt and Telescopic ECU Communication Stop	Multiplex tilt and telescopic ECU Wire harness	Click here
B1214	Door System Communication Bus Malfunction (+B Short)	AFS ECU Multiplex back door ECU Transponder key ECU Position control ECU and switch Outer mirror control ECU RH Outer mirror control ECU LH Instrument panel junction block (multiplex network body ECU) Multiplex network master switch Multiplex tilt and telescopic ECU Double door lock ECU Multiplex network gateway ECU Wire harness	Click here
B1215	Door System Communication Bus Malfunction (GND Short)	AFS ECU Multiplex back door ECU Transponder key ECU Position control ECU and switch Outer mirror control ECU RH Outer mirror control ECU LH Instrument panel junction block (multiplex network body ECU) Multiplex network master switch Multiplex tilt and telescopic ECU Double door lock ECU Multiplex network gateway ECU Wire harness	Click here
B1245	Wiper ECU Communication Stop	Auto wiper ECU Wire harness	Click here
B1248	AVC-LAN Communication Impossible	AVC-LAN (radio receiver assembly or multi-display assembly) Wire harness	Click here
B1249	Double Locking ECU Communication Stop	Double door lock ECU Wire harness	Click here
B1262	A/C ECU Communication Stop	Air conditioning amplifier Wire harness	Click here
B1266	Instrument Panel System Communication Bus Malfunction (+B Short)	Multiplex network gateway ECU Air conditioning amplifier Auto wiper ECU Center cluster integration panel Center airbag sensor assembly Combination meter Overhead junction block Rain sensor Sliding roof control ECU Wire harness	Click here
B1267	Instrument Panel System Communication Bus Malfunction (GND Short)	Multiplex network gateway ECU Air conditioning amplifier Auto wiper ECU Center cluster integration panel Center airbag sensor assembly Combination meter Overhead junction block Rain sensor Sliding roof control ECU Wire harness	Click here
B1271	Combination Meter ECU Communication Stop	Combination meter Wire harness	Click here
B1272	Power Seat ECU Communication Stop	Position control ECU and switch assembly Wire harness	Click here
B1273	Sliding Roof ECU Communication Stop	Sliding roof control ECU Wire harness	Click here
B1277	Center Cluster Integration Panel ECU Communication Stop	Center cluster integration panel Wire harness	Click here
B1279	Rain Sensor Communication Stop	Rain sensor Wire harness	Click here
B1281	Airbag ECU Communication Stop	Center airbag sensor assembly Wire harness	Click here
B1287	Back Door ECU Communication Stop	Multiplex back door ECU Wire harness	Click here
B1294	Immobiliser ECU Communication Stop	Transponder key ECU Wire harness	Click here

When "+B of GND short malfunction of communication bus" DTCs (B1214 and B1215) are detected at the same time as "communication stop" DTCs (B1200, B1205, B1206, B1208, B1209, B1213, B1249, B1272, B1287 and B1294), please repair the "+B or GND short malfunction of communication bus" DTCs first.

When "+B of GND short malfunction of communication bus" DTCs (B1266 and B1267) are detected at the same time as "communication stop" DTCs (B1245, B1262, B1271, B1273, B1277, B1279 and B1281), please repair the "+B or GND short malfunction of communication bus" DTCs first.