LIN COMMUNICATION SYSTEM 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

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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

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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

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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

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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

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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. Double lock door control relay assembly*1

7. Main body ECU (multiplex network body ECU)

8. Instrument panel junction block assembly

9. Wire harness or connector

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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

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B2786 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

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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

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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

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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

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