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Diagnostic Trouble Code Chart

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

DIAGNOSTIC TROUBLE CODE CHART

DTC No. Detection Item Trouble Area
B1201  Mayday ECU Bus Malfunction
  • Telephone ECU assembly (mayday ECU)
  • Wire harness
B1211  Driver Door ECU Communication Stop
  • Power window regulator master switch assembly (driver door ECU)
  • Wire harness
B1213  Tilt and Telescopic ECU Communication Stop
  • Multiplex tilt and telescopic ECU
  • Wire harness
B1214  Door System Communication Bus Malfunction (+B Short)
  • Power window regulator master switch assembly
  • Power window regulator switch assembly (front RH door ECU)
  • Power window regulator switch assembly (rear LH door ECU)
  • Power window regulator switch assembly (rear RH door ECU)
  • Multiplex network body ECU (main)
  • Wire harness
B1215  Door System Communication Bus Malfunction (GND Short)
  • Power window regulator master switch assembly
  • Power window regulator switch assembly (front RH door ECU
  • Power window regulator switch assembly (rear LH door ECU)
  • Power window regulator switch assembly (rear RH door ECU)
  • Multiplex network body ECU (main)
  • Wire harness
B1218  Body No. 2 ECU Communication Stop
  • Multiplex network body ECU No. 2 (sub)
  • Wire harness
B1245  Wiper ECU Communication Stop
  • Windshield wiper ECU
  • Wire harness
B1269  Theft Deterrent ECU Communication Stop
  • Theft warning ECU assembly
  • Wire harness
B1272  Power Seat ECU Communication Stop
  • Position control ECU assembly (driver seat ECU)
  • Wire harness
B1273  Sliding Roof ECU Communication Stop
  • Sliding roof driver gear subassembly ECU (sliding roof ECU)
  • Wire harness
B1276  Power Mirror Control ECU Communication Stop
  • Outer mirror control ECU assembly
  • Wire harness
B1279  Rain Sensor Communication Stop
  • Rain sensor
  • Wire harness

HINT:

When DTC of "+B or GND short malfunction of communication bus (such as B1214, B1215, etc.)" and "communication stop (such as B1211, B1212, etc.)" are detected simultaneously, repair DTC of "+B or GND short malfunction of communication bus" first.