SMART ENTRY AND START SYSTEM, Diagnostic DTC:B2288

DTC Code DTC Name
B2288 Steering Lock Signal Circuit Malfunction

DESCRIPTION

This DTC is output if the main body ECU cannot detect the unlock condition of the steering lock within a specified time.

Tech Tips

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

After the main body ECU is replaced, perform the registration procedure for the engine immobiliser system.

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)

  • Main body ECU (Instrument panel junction block)

  • Steering lock ECU

  • Wire harness or connector

WIRING DIAGRAM

A017DSQE07

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTCS


    1. Delete the DTCs Click here.

    2. After all DTCs are cleared, check if the trouble occurs again 18 to 22 seconds after the engine switch is turned on (IG).

    3. Check for DTCs again.

      Result
      Result Proceed to
      DTC B2285 (Steering lock Position Signal Circuit Malfunction) is output A
      Steering lock DTCs B2781, B2782 and/or B2788 are output B
      DTC is not output C

    A

    GO TO DIAGNOSTIC TROUBLE CODE CHART (DTC B2285) Click here

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART (DTCs B2781, B2782, B2788) Click here

    C

  2. CHECK STEERING LOCK


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

      OK
      The steering lock is released.

    NG

    GO TO STEERING LOCK SYSTEM Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. 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 tester and vehicle starts.

      Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Str Unlock SW Steering lock condition / ON or OFF

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

      OFF: Steering is locked (Engine switch off)

      		 -

    NG

    REPLACE STEERING LOCK ECU Click here

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)