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DTC B2781 Open / Short in Steering Lock ECU: Description

If the steering lock ECU determines that there is a malfunction inside the ECU, it outputs this DTC. The steering lock ECU diagnosis information cannot be read directly from the steering lock ECU by the Techstream. The diagnosis information from the steering lock ECU is transmitted to the Techstream via the certification ECU to the Techstream using the Controller Area Network (CAN).

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART

DTC No. DTC Detecting Condition Trouble Area
B2781
  • Steering lock motor drive circuit is defective.
  • Both lock and unlock position sensors detect "ON".
Steering lock actuator assembly (Steering lock ECU)