MULTIPLEX COMMUNICATION SYSTEM > DIAGNOSTIC TROUBLE CODE CHART

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  1. If a malfunction code is displayed during the 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
- Multiplex network body ECU
- Wire harness
 Click here
B1204
Driver Side Seat Switch ECU Communication Stop
- Integration control and panel assembly
- Wire harness
 Click here
B1205
AFS ECU Communication Stop
- Headlight swivel ECU assembly
- Wire harness
 Click here
B1206
P/W Master Switch Communication Stop
- Multiplex network master switch assembly
- Wire harness
 Click here
B1207
Smart ECU Stop
- Certification ECU
- Wire harness
 Click here
B1210
Power ECU Stop
- Power source control ECU
- Wire harness
 Click here
B1211
Driver Door ECU Communication Stop
- Multiplex network door ECU front LH (front door ECU LH)
- Wire harness
 Click here
B1212
Front Passenger Door ECU Communication Stop
- Multiplex network door ECU front RH (front door ECU RH)
- 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)
- Certification ECU
- Position control ECU and switch assembly (front passenger side)
- Multiplex network door ECU front RH (front door ECU RH)
- Multiplex network door ECU rear RH (rear door RH)
- Multiplex network switch (rear RH)
- Multiplex network door ECU rear LH (rear door LH)
- Multiplex network switch (rear LH)
- Multiplex network door ECU front LH (front door ECU LH)
- Multiplex network master switch assembly
- Sliding roof control ECU
- Overhead junction block
- Power source control ECU
- Network gateway ECU
- Wire harness
 Click here
B1215
Door System Communication Bus Malfunction (GND Short)
- Certification ECU
- Position control ECU and switch assembly (front passenger side)
- Multiplex network door ECU front RH (front door ECU RH)
- Multiplex network door ECU rear RH (rear door RH)
- Multiplex network switch (rear RH)
- Multiplex network door ECU rear LH (rear door LH)
- Multiplex network switch (rear LH)
- Multiplex network door ECU front LH (front door ECU LH)
- Multiplex network master switch assembly
- Sliding roof control ECU
- Overhead junction block
- Power source control ECU
- Network gateway ECU
- Wire harness
 Click here
B1216
Rear Door ECU RH Communication Stop
- Multiplex network door ECU rear RH (rear door RH)
- Wire harness
 Click here
B1217
Rear Door ECU LH Communication Stop
- Multiplex network door ECU rear LH (rear door LH)
- Wire harness
 Click here
B1247
Tire Pressure Monitor Receiver Communication Stop
- Tire pressure warning ECU
- Wire harness
 Click here
B1248
AVC-LAN Communication Impossible
- Radio and player ECU
- Wire harness
 Click here
B1262
A/C ECU Communication Stop
- A/C amplifier assembly No. 2 (A/C ECU)
- Wire harness
 Click here
B1263
Luggage Room Junction Block ECU Communication Stop
- Multiplex network rear ECU (luggage room junction block ECU)
- Wire harness
 Click here
B1266
Instrument Panel System Communication Bus Malfunction (+B Short)
- Combination switch assembly (windshield wiper switch)
- Center airbag sensor assembly
- A/C amplifier assembly No. 2 (A/C ECU)
- Integration control and panel assembly (mirror switch)
- Network gateway ECU
- Wire harness
 Click here
B1267
Instrument Panel System Communication Bus Malfunction (GND Short)
- Combination switch assembly (windshield wiper switch)
- Airbag sensor assembly center
- A/C amplifier assembly No. 2 (A/C ECU)
- Integration control and panel assembly (mirror switch)
- Network gateway ECU
- Wire harness
 Click here
B1271
Combination Meter ECU Communication Stop
- Combination meter assembly (meter ECU)
- Wire harness
 Click here
B1272
Power Seat ECU Communication Stop
- Position control ECU and switch assembly (driver side)
- Wire harness
 Click here
B1273
Sliding Roof ECU Communication Stop
- Sliding roof control ECU
- Wire harness
 Click here
B1278
Combination Switch ECU Communication Stop
- Combination switch assembly (windshield wiper switch)
- Wire harness
 Click here
B1279
Rain Sensor Communication Stop
- Rain sensor
- Wire harness
 Click here
B1280
Left Side Junction Block ECU Communication Stop
- Cowl side junction block LH (cowl side junction block ECU LH)
- Wire harness
 Click here
B1281
Airbag ECU Communication Stop
- Center airbag sensor assembly
- Wire harness
 Click here
B1289
Passenger Seat ECU Communication Stop
- Position control ECU and switch assembly (front passenger side)
- Wire harness
 Click here
B1291
Light System Communication Bus Malfunction (+B Short)
- Cowl side junction block RH (cowl side junction block ECU RH)
- Multiplex tilt and telescopic ECU
- Combination switch assembly (windshield wiper switch)
- Headlight swivel ECU assembly (w/ AFS)
- Front controller (w/o AFS)
- Cowl side junction block LH (cowl side junction block ECU LH)
- Position control ECU and switch assembly (driver side)
- Luggage room junction block ECU
- Network gateway ECU
- Wire harness
 Click here
B1292
Light System Communication Bus Malfunction (GND Short)
- Cowl side junction block RH (cowl side junction block ECU RH)
- Multiplex tilt and telescopic ECU
- Combination switch assembly (windshield wiper switch)
- Headlight swivel ECU assembly (w/ AFS)
- Front controller (w/o AFS)
- Cowl side junction block LH (cowl side junction block ECU LH)
- Position control ECU and switch assembly (driver side)
- Luggage room junction block ECU
- Network gateway ECU
- Wire harness
 Click here
B1296
Front Light ECU Communication Stop
- Engine room No. 2 relay block (front controller)
- Wire harness
 Click here
B1297
Clearance Sonar ECU Communication Stop
- Clearance warning ECU assembly
- Wire harness
 Click here
  1. When "+B of GND short malfunction of communication bus" DTCs (B1214, B1215, etc.) are detected at the same time as "communication stop" DTCs (B1211, B1212, etc.), repair the "+B or GND short malfunction of communication bus" DTCs first.