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DIAGNOSTIC TROUBLE CODE CHART Lexus LS IV

Multiplex Communication: Diagnosis

DIAGNOSTIC TROUBLE CODE CHART

HINT

  1. If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "DTC Code" below.
  2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

LIN Communication System

DTC CodeDetection ItemTrouble Area
B1206P/W Master Switch Communication StopMain body ECU (driver side junction block) Master switch Harness or connector
B1273Sliding Roof ECU Communication StopMain body ECU (driver side junction block) Sliding roof drive gear sub-assembly (Sliding roof ECU) Harness or connector
B1492/92Infrared Ray Sensor Communication MalfunctionInfrared ray sensor Air conditioning amplifier Harness or connector
B2287LIN Communication Master MalfunctionMain body ECU (driver side junction block) Certification ECU (Smart key ECU) Harness or connector
B2321Driver Side Door ECU Communication StopMain body ECU (driver side junction block) Front power window regulator motor LH Harness or connector
B2322Front Passenger Side Door ECU Communication StopMain body ECU (driver side junction block) Front power window regulator motor RH Harness or connector
B2323Rear Door RH ECU Communication StopMain body ECU (driver side junction block) Rear power window regulator motor RH Harness or connector
B2324Rear Door LH ECU Communication StopMain body ECU (driver side junction block) Rear power window regulator motor LH Harness or connector
B2325LIN Communication Bus MalfunctionMain body ECU (driver side junction block) Master switch Front power window regulator motor LH Front power window regulator motor RH Rear power window regulator motor LH Rear power window regulator motor RH Sliding roof drive gear sub-assembly (sliding roof ECU) Harness or connector
B2405Sub Bus LIN Module Communication MalfunctionLuggage room junction block (rear junction block ECU) Map light assembly (overhead junction block) Harness or connector
B2785Communication Malfunction between ECUs Connected by LINCertification ECU (smart key ECU) Main body ECU (driver side junction block) ID code box (immobilizer code ECU) Steering lock actuator assembly (steering lock ECU) Harness or connector
B2786No Response from Steering Lock ECUCertification ECU (smart key ECU) Steering lock actuator assembly (steering lock ECU) Harness or connector
B2789No Response from ID BOXCertification ECU (smart key ECU) ID code box (immobilizer code ECU) Harness or connector
U0211Lost Communication with Rear Seat Control ECU RHRear power seat module switch Position control ECU RH Harness or connector
U0246Lost Communication with Rear Seat Control ECU LHRear power seat module switch Position control ECU LH Harness or connector
U1127Lost Communication with Center Console Switch ECUOuter mirror switch No. 1 console switch Harness or connector
U1128Lost Communication with Front Climate Control Seat ECU RHOuter mirror switch Front seat climate control ECU RH Harness or connector
U1129Lost Communication with Front Climate Control Seat ECU LHOuter mirror switch Front seat climate control ECU LH Harness or connector
U1130Lost Communication with Rear Climate Control Seat ECU RHRear power seat module switch Rear seat climate control ECU RH Harness or connector
U1131Lost Communication with Rear Climate Control Seat ECU LHRear power seat module switch Rear seat climate control ECU LH Harness or connector

DTC CODE CHART