ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2288

DTC Code DTC Name
B2288 Steering Lock Signal Circuit Malfunction

DESCRIPTION

This DTC is output when the power source control ECU cannot detect the unlock condition of the steering lock within a specified time.

Tech Tips

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the 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
B2288 After turning engine switch from off to on (IG), the steering wheel does not unlock for a certain period of time (ECU unlocks steering wheel only when it receives an unlock signal from LIN communication and cable)

  • Power source control ECU

  • Steering lock ECU

  • Wire harness or connector

WIRING DIAGRAM

A0160FGE17

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM INITIALIZATION


    1. Perform initialization Click here.


    NEXT

  2. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check if the trouble occurs again 18 to 22 seconds after the engine switch is turned on (IG).

      Result
      Result Proceed to
      DTC B2288 is output A
      DTC B2285 is output B
      DTC is not output C

    B

    GO TO OTHER FLOWCHART (DTC B2285) Click here

    C

    END (INITIALIZATION WAS NOT COMPLETED)

    A

  3. CHECK FOR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Check for Steering Lock System DTC.

      OK
      DTC is not output.

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART (STEERING LOCK SYSTEM) Click here

    OK

  4. CHECK STEERING LOCK


    1. Check if the steering lock is released when turning the engine switch on (ACC).

      OK
      The steering lock is released.

    NG

    GO TO STEERING LOCK SYSTEM (STEERING LOCK CAN NOT BE UNLOCKED) Click here

    OK

  5. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Check the Data List for proper functioning of the steering lock function.

      Tech Tips

      When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the intelligent tester and vehicle starts.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Steering Unlock Switch Steering lock condition / ON or OFF

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

      Steering is locked (Engine switch off)

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

    NG

    REPLACE STEERING LOCK ECU Click here

    OK

    REPLACE POWER SOURCE CONTROL ECU