LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Networking) >> Lin Communication System >> DTC B2785 Communication Malfunction between ECUs Connected by LIN >> Description

DTC B2785 Communication Malfunction between ECUs Connected by LIN: Description

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

The certification ECU (smart key ECU assembly) monitors communication between all the ECUs connected to the certification ECU bus lines. When the certification ECU (smart key ECU assembly) detects errors in communication with all the ECUs connected to the certification ECU bus lines at a set interval and 3 times in a row, DTC B2785 will be output.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
B2785
  • Error in LIN communication between ECUs and an open or short in communication lines
  • LIN communication from the certification ECU (smart key ECU assembly) stops for a set amount of time or more
  • Certification ECU (smart key ECU assembly)
  • Power source control ECU Steering lock ECU (steering lock actuator assembly)
  • ID code box (immobilizer code ECU)
  • Wire harness or connector
scientia non olet · About LEMON Manuals