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Home >> Lexus >> 2010 >> IS 250 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Engine Immobiliser (Diagnostic Codes & Circuit Tests) >> Engine Immobilizer System >> DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX >> Description

DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX: Description

This DTC is output when LIN communication from the certification ECU stops for a certain amount of time.

DTC No. DTC Detection Condition Trouble Area
B2785
  • LIN communication from certification ECU stops for a certain amount of time
  • Open or short in wire harness between ECUs
  • Wire harness
  • Certification ECU
  • ID code box
  • Power source control ECU
  • Steering lock ECU
B2786 Certification ECU does not receive LIN communication from steering lock ECU for 10 seconds.
  • Wire harness
  • Certification ECU
  • Steering lock ECU
B2789
  • Certification ECU does not receive LIN communication from IDcode box
  • Open or short in wire harness between ECUs
  • Wire harness
  • Certification ECU
  • ID code box