ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2285, B2288

DTC Code DTC Name
B2285 Steering Lock Position Signal Circuit Malfunction
B2288 Steering Lock Signal Circuit Malfunction

DESCRIPTION

The main body ECU and the steering lock ECU are connected by a cable and the LIN communication line. These DTCs are stored when: 1) signals, transmitted through the cable and the communication line, do not match; or 2) a malfunction is detected in the circuit between the main body ECU and the steering lock ECU.

DTC Code Detection Condition Trouble Area
B2285 The cable and LIN information between the main body ECU and steering lock ECU is inconsistent.

  • Main body ECU


  • Steering lock actuator assembly (steering lock ECU)


  • Harness or connector
B2288 After turning the engine switch from off to on (IG), the steering wheel does not unlock for a certain period of time (the ECU unlocks the steering wheel only when it receives an unlock signal through LIN communication and the cable).

  • Main body ECU


  • Steering lock actuator assembly (steering lock ECU)


  • Harness or connector

WIRING DIAGRAM

A01ERCSE04

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (STEERING UNLOCK SWITCH)


    1. Use the Data List to check if the steering lock is functioning properly.

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

      ON: Steering unlocked

      OFF: Steering locked

      		 -
      Result
      Result Proceed to
      Display on the intelligent tester does not change according to steering lock position A
      Display on the intelligent tester changes according to steering lock position B

    B

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

    A

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

    A01EQU9E17

    1. Disconnect the E1 main body ECU connector.

    2. Disconnect the E26 steering lock ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-18 (SLP) - E26-4 (SLP1) Always Below 1 Ω
      E1-18 (SLP) or E26-4 (SLP1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)


    1. Temporarily replace the main body ECU with a new or normally functioning one.

    2. Check whether DTC B2285 and B2288 are output.

      OK
      No DTC is output.

    NG

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

    OK

    END