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SMART ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2285

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DTC Code DTC Name
B2285 Steering Lock Position Signal Circuit Malfunction
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DESCRIPTION

The main body ECU receives signals from the steering lock actuator assembly (steering lock ECU) via a direct line and via a LIN communication line. If the information received via these 2 lines is inconsistent, this DTC will be stored.

Tip:

When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC No. DTC Detection Condition Trouble Area
B2285 Information received by the main body ECU from the steering lock actuator assembly (steering lock ECU) via a direct line and a via the LIN communication line is inconsistent.

  • Steering lock actuator assembly (steering lock ECU)

  • Main body ECU

  • Wire harness or connector
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Tip:

Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

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PROCEDURE


  1. Click here

    PERFORM INITIALIZATION (STEERING LOCK SYSTEM)


    1. Move the shift lever to P.

    2. Turn the engine switch off.

    3. Open the driver door.

    4. Close the driver door.


  2. Click here

    CHECK FOR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs (Click here).

    3. Check if DTC B2285 is output.

      OK
      DTC B2285 is not output.

  3. Click here

    READ VALUE USING INTELLIGENT TESTER


    1. Turn the engine switch on (IG).

    2. Turn the intelligent tester on.

    3. Enter the following menus: Body / Main Body / Data List.

    4. Read the Data List according to the display on the intelligent tester.

      Table 1. Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Steering Unlock Switch Steering lock condition / ON or OFF

      ON: Steering unlocked (Engine switch on (ACC))

      OFF: Steering locked (Engine switch off)

      		 -
      OK
      ON (steering is unlocked) and OFF (steering is locked) appear on the screen.

  4. Click here

    REPLACE MAIN BODY ECU


    1. Replace the main body ECU (Click here).


  5. Click here

    CHECK FOR DTC


    1. Clear the DTCs (Click here).

    2. Check if DTC B2285 is output.

      OK
      DTC B2285 is not output.

  6. Click here

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STEERING LOCK ECU)


    1. A01CBBTE04

      Disconnect the G48 connector from the main body ECU.

    2. Disconnect the G22 connector from the steering lock actuator assembly (steering lock ECU).

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G48-18 (SLP) - G22-4 (SLP1) Always Below 1 Ω
      G48-18 (SLP) or G22-4 (SLP1) - Body ground Always 10 kΩ or higher

  7. Click here

    REPLACE MAIN BODY ECU


    1. Replace the main body ECU (Click here).


  8. Click here

    CHECK FOR DTC


    1. Clear the DTCs (Click here).

    2. Check if DTC B2285 is output.

      OK
      DTC B2285 is not output.

  9. Click here

    END (INITIALIZATION WAS NOT COMPLETED)

  10. Click here

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)Click here

  11. Click here

    END (MAIN BODY ECU WAS DEFECTIVE)

  12. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU - STEERING LOCK ECU)

  13. Click here

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)Click here

  14. Click here

    END (MAIN BODY ECU WAS DEFECTIVE)