LIN COMMUNICATION SYSTEM > DIAGNOSTIC TROUBLE CODE CHART

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MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) DIAGNOSTIC TROUBLE CODE CHART

Main Body ECU (Multiplex Network Body ECU) 
DTC Code
Detection Item
Trouble Area
See page
B1206
P/W Master Switch Communication Stop
1. Multiplex network master switch assembly
2. Main body ECU (multiplex network body ECU)
3. Instrument panel junction block assembly
4. Wire harness or connector
5. D FR DOOR fuse
 Click here
B1249
*1
Double Locking ECU Communication Stop
1. Double lock door control relay assembly
2. Main body ECU (multiplex network body ECU)
3. Instrument panel junction block assembly
4. Wire harness or connector
5. DBL LOCK fuse
6. ECU-B fuse
 Click here
B1273
*2
Sliding Roof ECU Communication Stop
1. Sliding roof ECU (sliding roof drive gear assembly)
2. Main body ECU (multiplex network body ECU)
3. Instrument panel junction block assembly
4. Wire harness or connector
5. S/ROOF fuse
 Click here
B2321
Driver Side Door ECU Communication Stop
1. Power window regulator motor assembly (for driver side)
2. Main body ECU (multiplex network body ECU)
3. Multiplex network master switch assembly
4. Wire harness or connector
5. D FR DOOR fuse
 Click here
B2322
Front Passenger Side Door ECU Communication Stop
1. Power window regulator motor assembly (for front passenger side)
2. Main body ECU (multiplex network body ECU)
3. Instrument panel junction block assembly
4. Wire harness or connector
5. P FR DOOR fuse
 Click here
B2323
Rear Door RH ECU Communication Stop
1. Power window regulator motor assembly (for rear RH side)
2. Main body ECU (multiplex network body ECU)
3. Instrument panel junction block assembly
4. Wire harness or connector
5. DOOR RR fuse
 Click here
B2324
Rear Door LH ECU Communication Stop
1. Power window regulator motor assembly (for rear LH side)
2. Main body ECU (multiplex network body ECU)
3. Instrument panel junction block assembly
4. Wire harness or connector
5. DOOR RL fuse
 Click here
B2325
LIN Communication Bus Malfunction
1. Power window regulator motor assembly (for driver side)
2. Power window regulator motor assembly (for front passenger side)
3. Power window regulator motor assembly (for rear RH side)
4. Power window regulator motor assembly (for rear LH side)
5. Multiplex network master switch assembly
6. Sliding roof ECU (sliding roof drive gear assembly)*2
7. Double lock door control relay assembly*1
8. Main body ECU (multiplex network body ECU)
9. Instrument panel junction block assembly
10. Wire harness or connector
 Click here
  1. *1: w/ Double Locking System
  2. *2: w/ Sliding Roof System

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DIAGNOSTIC TROUBLE CODE CHART

Certification ECU (Smart Key ECU Assembly) 
DTC Code
Detection Item
Trouble Area
See page
B2785
Communication Malfunction between ECUs Connected by LIN
1. Certification ECU (smart key ECU assembly)
2. Power management control ECU
3. Transmission control ECU assembly
4. ID code box (immobiliser code ECU)
5. Wire harness or connector
 Click here
B2786
*3
No Response from Steering Lock ECU
1. Transmission control ECU assembly
2. Certification ECU (smart key ECU assembly)
3. Wire harness or connector
4. P CON MAIN fuse
 Click here
B2789
No Response from ID BOX
1. ID code box (immobiliser code ECU)
2. Certification ECU (smart key ECU assembly)
3. Wire harness or connector
4. ECU-B2 fuse
 Click here
B278C
Lost Communication with Power Source Control
1. Power management control ECU
2. Certification ECU (smart key ECU assembly)
3. Wire harness or connector
4. AM2 fuse
 Click here
  1. *3: Although "No Response from Steering Lock ECU" is displayed on the tester, this message is shown if the certification ECU (smart key ECU assembly) cannot communicate with the transmission control ECU assembly.

POWER MANAGEMENT CONTROL ECU DIAGNOSTIC TROUBLE CODE CHART

Power Management Control ECU 
DTC Code
Detection Item
Trouble Area
See page
B2287
LIN Communication Master Malfunction
1. Power management control ECU
2. Certification ECU (smart key ECU assembly)
3. Wire harness or connector
 Click here