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.

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

- Multiplex network master switch assembly

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B1249 Double Locking ECU Communication Stop

- Double lock door control relay assembly

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B1273 Sliding Roof ECU Communication Stop

- Sliding roof drive gear sub-assembly

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B2321 Driver Side Door ECU Communication Stop

- Front power window regulator motor assembly LH*1

- Front power window regulator motor assembly RH*2

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B2322 Front Passenger Side Door ECU Communication Stop

- Front power window regulator motor assembly RH*1

- Front power window regulator motor assembly LH*2

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B2323 Rear Door RH ECU Communication Stop

- Rear power window regulator motor assembly RH

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B2324 Rear Door LH ECU Communication Stop

- Rear power window regulator motor assembly LH

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here

B2325 LIN Communication Bus Malfunction

- Multiplex network master switch assembly

- Front power window regulator motor assembly LH

- Front power window regulator motor assembly RH

- Rear power window regulator motor assembly LH*3

- Rear power window regulator motor assembly RH*3

- Sliding roof drive gear sub-assembly*4

- Double lock door control relay assembly*5

- Main body ECU (multiplex network body ECU)

- Harness or connector

Click here


Power Management Control ECU
DTC Code Detection Item Trouble Area See page
B2287 LIN Communication Master Malfunction

- Certification ECU

- Power management control ECU

- Harness or connector

Click here

Certification ECU
DTC Code Detection Item Trouble Area See page
B2785 Communication Malfunction between ECUs Connected by LIN

- Certification ECU

- Power management control ECU

- ID code box

- Steering lock actuator assembly (steering lock ECU)

- Harness or connector

Click here

B2786 No Response from Steering Lock ECU

- Steering lock actuator assembly (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

- Certification ECU

- Power management control ECU

- Harness or connector

Click here

Headlight Swivel ECU Assembly (AFS ECU)
DTC Code Detection Item Trouble Area See page
B2410 Headlight Swivel Motor LH Communication Malfunction

- Headlight Assembly LH (headlight swivel motor LH)

- Headlight swivel ECU assembly (AFS ECU)

- Harness or connector

Click here

B2411 Headlight Swivel Motor RH Communication Malfunction

- Headlight Assembly RH (headlight swivel motor RH)

- Headlight swivel ECU assembly (AFS ECU)

- Harness or connector

Click here

B2424 Headlight Leveling Motor LH Communication Malfunction

-Headlight assembly LH (headlight leveling motor LH)

- Headlight swivel ECU assembly (AFS ECU)

- Harness or connector

Click here

B2425 Lost Communication with Headlight Leveling ECU RH

- Headlight assembly RH (headlight leveling motor RH)

- Headlight swivel ECU assembly (AFS ECU)

- Harness or connector

Click here

Driving Support Switch Control ECU
DTC Code Detection Item Trouble Area See page
B2661 Lost Communication with Combination Meter

- Driving support switch control ECU

- Combination meter assembly

- Harness or connector

Click here

B2662 Lost Communication with Clock/Outside Temperature Display

- Driving support switch control ECU

- Accessory meter assembly

- Harness or connector

Click here