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Diagnostic Trouble Code Chart

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

MULTIPLEX COMMUNICATION SYSTEM 

DIAGNOSTIC TROUBLE CODE CHART - MULTIPLEX COMMUNICATION SYSTEM

DTC No. Detection Item Trouble Area
B1200  MPX Body ECU Stop
  1. Main body ECU RH
  2. Wire harness
B1205  AFS ECU Communication Stop
  1. AFS ECU
  2. Wire harness
B1206  P/W Master Switch Communication Stop
  1. Multiplex network master switch
  2. Wire harness
B1207  Smart ECU Stop
  1. Certification ECU
  2. Wire harness
B1208  Passenger Side Outer Mirror ECU
  1. Outer mirror control ECU RH
  2. Wire harness
B1209  Driver Side Outer Mirror
  1. Outer mirror control ECU LH
  2. Wire harness
B1210  Power ECU Stop
  1. Power source control ECU
  2. Wire harness
B1213  Tilt and Telescopic ECU Communication Stop
  1. Tilt and telescopic ECU
  2. Wire harness
B1214  Short to B+ in Door System Communication Bus Malfunction
  1. Main body ECU RH
  2. Gateway ECU
  3. Tilt and telescopic ECU
  4. Windshield wiper switch
  5. Power window switch (Front RH)
  6. Power window master switch
  7. Certification ECU
  8. Power source control ECU
  9. Power window switch (Rear LH)
  10. Position control ECU and Switch (Front RH seat)
  11. Position control ECU and Switch (Front LH seat)
  12. Power window switch (Rear RH)
  13. Main body ECU LH
  14. Outer mirror control ECU (RH)
  15. Outer mirror control ECU (LH)
  16. Front controller
  17. Overhead J/B
  18. Rain sensor
  19. Sliding roof control ECU
  20. Wire harness
B1215  Short to GND in Door System Communication Bus Malfunction
  1. Main body ECU RH
  2. Gateway ECU
  3. Tilt and telescopic ECU
  4. Windshield wiper switch
  5. Power window switch (Front RH)
  6. Power window master switch
  7. Certification ECU
  8. Power source control ECU
  9. Power window switch (Rear LH)
  10. Position control ECU and Switch (Front RH seat)
  11. Position control ECU and Switch (Front LH seat)
  12. Power window switch (Rear RH)
  13. Main body ECU LH
  14. Outer mirror control ECU (RH)
  15. Outer mirror control ECU (LH)
  16. Front controller
  17. Overhead J/B
  18. Rain sensor
  19. Sliding roof control ECU
  20. Wire harness
B1247  Tire Pressure Monitor Receiver Communication Stop
  1. Tire pressure warning ECU
  2. Wire harness
B1248  AVC-LAN Communication Impossible
  1. AVC-LAN (radio receiver assembly or multi-display assembly)
  2. Wire harness
B1262  A/C ECU Communication Stop
  1. Air conditioning amplifier (A/C ECU)
  2. Wire harness
B1266  Short to B+ in Instrument Panel System Communication Bus Malfunction
  1. Gateway ECU
  2. Air conditioning amplifier (A/C ECU)
  3. AFS ECU
  4. Clearance warning ECU
  5. Combination meter ECU
  6. Tire pressure monitor ECU
  7. Wire harness
B1267  Short to GND in Instrument Panel System Communication Bus Malfunction
  1. Gateway ECU
  2. Air conditioning amplifier (A/C ECU)
  3. AFS ECU
  4. Clearance warning ECU
  5. Combination meter ECU
  6. Tire pressure monitor ECU
  7. Wire harness
B1271  Combination Meter ECU Communication Stop
  1. Combination meter ECU
  2. Wire harness
B1272  Power Seat ECU Communication Stop
  1. Position control ECU and switch
  2. Wire harness
B1273  Sliding Roof ECU Communication Stop
  1. Sliding roof control ECU
  2. Wire harness
B1278  Combination Switch ECU Communication Stop
  1. Combination switch assembly
  2. Wire harness
B1279  Rain Sensor Communication Stop
  1. Rain sensor
  2. Wire harness
B1280  Left Side Junction Block ECU Communication Stop
  1. Main body ECU LH (cowl side J/B LH)
  2. Wire harness
B1289  Passenger Seat ECU Communication Stop
  1. Position control ECU and switch
  2. Wire harness
B1296  Front Light ECU Communication Stop
  1. Front controller
  2. Wire harness
B1297  Clearance Sonar ECU Communication Stop
  1. Clearance warning ECU
  2. Wire harness

When "+B of GND short malfunction of communication bus" DTCs (B1266 and B1267) are detected at the same time as "communication stop" DTCs (B1200, B1205, B1216, B1208, B1209, B1213, 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 (B1214 and B1215) 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.

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