Diagnostic Trouble Code Chart

HINT:

Parameters listed in the chart may be different from measured values depending on the type of instruments used and other factors.
If any DTCs are displayed during a check mode, check the circuit for the DTCs listed below. For details of each DTC, refer to the page indicated.

NOTE: Only when the DTCs below are output from the main body ECU, proceed to the CAN MS Bus table below. If the DTCs are output from the ECUs other than the main body ECU, refer to "HOW TO PROCEED WITH TROUBLESHOOTING " to determine the malfunctioning part.

HINT:

When communication with the ECUs connected to the CAN MS bus is interrupted or a malfunction in the CAN MS bus occurs, the main body ECU detects the malfunctions and outputs DTCs.

CAN MS BUS:

CAN MS BUS - DTC DETECTION ITEM CHART

DTC Code	Detection Item	Trouble Area
B1207	Certification ECU Communication Malfunction	Open or short in CAN No 3 J/C and certification ECU Certification ECU power source circuit Certification ECU Wire harness or connector
B1213	Tilt and Telescopic ECU Communication Stop	Open or short in CAN No 3 J/C and multiplex tilt and telescopic ECU Multiplex tilt and telescopic ECU power source circuit Multiplex tilt and telescopic ECU Wire harness or connector
B1272	Power Seat ECU Communication Stop	Open or short in CAN No 3 J/C and seat position control ECU (Front LH side) Seat position control ECU (Front LH side) power source circuit Seat position control ECU (Front LH side) Wire harness or connector
B1276	Power Mirror Control ECU Communication Stop	Open or short in CAN No 3 J/C and outer mirror control ECU Outer mirror control ECU power source circuit Outer mirror control ECU Wire harness or connector
B1289	Passenger Seat ECU Communication Stop	Open or short in CAN No 3 J/C and seat position control ECU (Front RH side) Seat position control ECU (Front RH side) power source circuit Seat position control ECU (Front RH side) Wire harness or connector
B1297	Clearance Sonar ECU Communication Stop	Open or short in CAN No 3 J/C and clearance warning ECU Clearance warning ECU power source circuit Clearance warning ECU Wire harness or connector
B2326	CAN MS Bus Line Communication Malfunction	Open or short in MS bus main wire Open or short in MS bus branch wires Wire harness or connector Certification ECU Multiplex tilt and telescopic ECU Seat position control ECU (Front LH side) Seat position control ECU (Front RH side) Outer mirror control ECU Clearance warning ECU Main body ECU CAN No 3 J/C

NOTE: Only when the DTCs below are output from the gateway ECU, proceed to the CAN NO. 2 BUS table below. If the DTCs are output from the ECUs other than the gateway ECU, refer to "HOW TO PROCEED WITH TROUBLESHOOTING " to determine the malfunctioning part.

HINT:

When communication with the ECUs connected to the CAN No 2 bus is interrupted or a malfunction in the CAN No. 2 bus occurs, the gateway ECU detects the malfunctions and outputs DTCs.
If a vehicle is not equipped with any of the following-dynamic radar cruise control system, AFS, and pre-collision system, it will not be equipped with a CAN No. 2 main bus.

CAN No. 2 Bus:

CAN NO. 2 BUS - DTC DETECTION ITEM CHART

DTC Code	Detection Item	Trouble Area
U0182	Lost Communication with AFS ECU	Open or short in CAN No 1 J/C and AFS ECU AFS ECU power source circuit AFS ECU Wire harness or connector
U1002	Lost Communication with Gateway Module	Open or short in No 2 bus main wire Open or short in No 2 bus branch wires CAN No 1 J/C CAN No 4 J/C AFS ECU Distance control ECU Seat belt control ECU Wire harness or connector Gateway ECU
U1100	Lost Communication with Seat Belt Control ECU	Open or short in CAN No 4 J/C and seat belt control ECU Open in one side of CAN bus main wire (Between CAN No. 1 J/C and CAN No 4 J/C) Seat belt control ECU power source circuit Seat belt control ECU CAN No 4 J/C Wire harness or connector
U1102	Lost Communication with Radar Sensor	Open or short in CAN No 1 J/C and distance control ECU Distance control ECU power source circuit Distance control ECU Wire harness or connector