STEERING LOCK SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Steering Lock System
DTC No. Detection Item DTC Detection Condition Note Link
B2781 Open / Short in Steering Lock ECU

One of the following conditions is met (1-trip detection logic (Only output while a malfunction is present and the power switch is on (IG).)):


  • The steering lock sensor or unlock sensor is malfunctioning (When both detection switches turn on, the system is determined to be malfunctioning.).

  • The steering lock motor activation circuit has a short circuit.

  • The steering lock motor activation circuit has an open circuit.

 DTC Output Confirmation Operation: No confirmation operation is necessary (monitoring is continuous).

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B2782 Power Source Control ECU Malfunction

Either of the following conditions is met (1-trip detection logic (Only output while a malfunction is present and the power switch is on (IG).)):


  • The steering lock motor activation command circuit has a short circuit.

  • The steering lock motor activation command circuit has an open circuit.

Tech Tips

If the power supply signal from the LIN communication line does not match the power supply signal from the direct line, the system is determined to be malfunctioning.

 DTC Output Confirmation Operation: Perform a steering lock/unlock operation. (The steering locks when a door is opened with the shift lever in P and the power switch off. The steering unlocks when the power switch is turned on (ACC) or on (IG) while carrying the key.)

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B2788 IG2 Signal Malfunction Mismatch between the steering lock ECU (steering lock actuator assembly) IG2 input from the LIN communication system and from the direct line (1-trip detection logic (Only output while a malfunction is present and the power switch is on (IG).)). DTC Output Confirmation Operation: No confirmation operation is necessary (monitoring is continuous).

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