LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

DTC Code Detection Item Trouble Area See page
B1206 P/W Master Switch Communication Stop

- Master switch

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B1249 Double Locking ECU Communication Stop

- Double lock door control relay

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B1273 Sliding Roof ECU Communication Stop

- Sliding roof drive gear

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B2287 LIN Communication Master Malfunction

- Certification ECU

- Power management control ECU

- Harness or connector

Click here

B2321 Driver Side Door ECU Communication Stop

- Front door window regulator (for

Driver Side)

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B2322 Front Passenger Side Door ECU Communication Stop

- Front door window regulator (for

Front Passenger Side)

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B2323 Rear Door RH ECU Communication Stop

- Rear door window regulator RH

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B2324 Rear Door LH ECU Communication Stop

- Rear door window regulator LH

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B2325 LIN Communication Bus Malfunction

- Master switch

- Front door window regulator LH

- Front door window regulator RH

- Rear door window regulator LH

(w/ Rear Door Power Window)

- Rear door window regulator RH

(w/ Rear Door Power Window)

- Sliding roof drive gear (w/ Roof

Sunshade System)

- Double lock door control relay

(w/ Double Locking System)

- Main body ECU (instrument

panel junction block assembly)

- Harness or connector

Click here

B2785 Communication Malfunction between ECUs Connected by LIN

- Certification ECU

- Power management control ECU

- ID code box

- Steering lock ECU

- Harness or connector

Click here

B2786 No Response from Steering Lock ECU

- Steering lock ECU

- Certification ECU

- Harness or connector

Click here

B2789 No Response from ID BOX

- ID code box

- Certification ECU

- Harness or connector

Click here

B278C Lost Communication with Power Source Control

- Power management control ECU

- Certification ECU

- Harness or connector

Click here