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DTC B2285: Steering Lock Position Signal Circuit Malfunction [10/2019 - ]: Description

This DTC is stored when the steering lock position signal sent by the steering lock ECU (steering lock actuator assembly) via direct line and the steering lock position signal sent via LIN communication do not match.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2285 Steering Lock Position Signal Circuit Malfunction The steering lock position signal sent by the steering lock ECU (steering lock actuator assembly) via direct line and the steering lock position signal sent via LIN communication do not match. (1-trip detection logic*1)
  • AM2 fuse
  • Steering lock ECU (steering lock actuator assembly)
  • Certification ECU (smart key ECU assembly)
  • DCM (telematics transceiver)*2
  • Harness or connector
DTC Output Confirmation Operation: 
  1. Disconnect the cable from the negative (-) auxiliary battery terminal, wait 30 seconds and then reconnect the cable to the negative (-) auxiliary battery terminal. Wait 40 seconds or more with the power switch off (with the steering locked), then turn the power switch on (ACC) (steering unlocked) and wait 40 seconds or more.
  1. *1: Only detected while a malfunction is present and the power switch is on (IG).
  2. *2: for Lexus Enform Remote Compatible Type
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
The hybrid control system cannot be started. The ECU does not send a hybrid control system start request.
RELATED DATA LIST AND ACTIVE TEST ITEMS

DTC No. Data List and Active Test
B2285 Power Source Control 
  1. Steering Unlock Switch

Smart Access 
  • Power Supply Short
  • Motor Driver Short
  • Lock Bar Stuck Error