FixVault

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 page given for the circuit.

MULTIPLEX COMMUNICATION SYSTEM 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
B1201  Mayday ECU Communication Stop
  • Mayday ECU
  • Wire harness
B1211  Driver Door ECU Communication Stop
  • Power window regulator master switch assembly
  • Wire harness
B1213  Tilt and Telescopic ECU Communication Stop
  • Multiplex tilt and telescopic ECU
  • Wire harness
B1214  Short to B+ in Door System Communication Bus Malfunction
  • Power window regulator master switch assembly
  • Multiplex tilt and telescopic ECU
  • Multiplex network body ECU No 2 (Body No. 2 ECU)
  • Windshield wiper ECU
  • Theft deterrent ECU
  • Power seat ECU
  • Outer mirror control ECU
  • Ram sensor
  • Junction Block
  • Mayday ECU
  • Instrument panel junction block assembly (Body ECU)
  • Wire harness
B1215  Short to GND in Door System Communication Bus Malfunction
  • Power window regulator master switch assembly
  • Multiplex tilt and telescopic ECU
  • Multiplex network body ECU No 2 (Body No 2 ECU)
  • Windshield wiper ECU
  • Theft deterrent ECU
  • Power seat ECU
  • Outer mirror control ECU
  • Rain sensor
  • Junction Block
  • Mayday ECU
  • Instrument panel junction block assembly (Body ECU)
  • Wire harness
B1218  Body No 2 ECU Communication Stop
  • Multiplex network body ECU No 2 (Body No 2 ECU)
  • Wire harness
B1245  Wiper ECU Communication Stop
  • Windshield wiper ECU
  • Wire harness
B1269  Theft Deterrent ECU Communication Stop
  • Theft deterrent ECU
  • Wire harness
B1272  Power Seat ECU Communication Stop
  • Power seat ECU
  • Wire harness
B1276  Power Mirror Control ECU Communication Stop
  • Outer mirror control ECU
  • Wire harness
B1279  Rain Sensor Communication Stop
  • Rain sensor
  • Wire harness

HINT

When DTC of "+B or GND short malfunction of communication bus B1214 and B1215 are detected at the same time as "communication stop" DTC B1201, B1211, B1213, B1218, B1245, B1269, B1272, B1276, and B1279, repair DTC of "+B or GND short malfunction of communication bus" first.