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

DTC Code DTC Name
B2285 Steering Lock Position Signal Circuit Malfunction

DESCRIPTION

The power management control ECU and the steering lock actuator (steering lock ECU) are connected by a cable and the LIN communication line. This DTC is stored when the cable information of the steering lock position signal and LIN information of the steering lock position signal are inconsistent.

Tip:

When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC Code

DTC Detection Condition

Trouble Area

B2285

The cable information of the steering lock position signal and LIN information of the steering lock position signal are inconsistent.

  • AM2 NO. 2 fuse

  • Steering lock actuator assembly (steering lock ECU)

  • Power management control ECU

  • LIN communication system

  • Harness or connector

WIRING DIAGRAM

U121692E02

CAUTION / NOTICE / HINT

Note:

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

  • Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tip:

After replacing the steering lock actuator assembly (steering lock ECU), perform the key ID code registration. Refer to the Service Bulletin for the registration procedure.

PROCEDURE

  1. CHECK FOR DTC (LIN COMMUNICATION SYSTEM)

    1. Clear the DTCs (Click here).

    2. Check for DTCs (Click here).

      OK

      LIN communication system DTCs B2287 and B2785 are not output simultaneously.

    GO TO DTC B2287

    (Click here)

  2. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)

    1. U122733E02

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H54-4 (SLP1) - Body ground

      Steering lock locked

      10 kΩ or higher

      H54-4 (SLP1) - Body ground

      Steering lock released

      Below 1 Ω
      Table 1. Text in Illustration

      *1

      Component with harness connected

      (Steering Lock ECU)

    REPLACE STEERING LOCK ACTUATOR (STEERING LOCK ECU)

    (Click here)

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU)

    1. Disconnect the H71 power management control ECU connector.

      U123068E02
      Table 2. Text in Illustration

      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

      *2

      Front view of wire harness connector

      (to Steering Lock ECU)

      1. Disconnect the H54 steering lock ECU connector.

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

        Standard Resistance

        Tester Connection

        Condition

        Specified Condition

        H54-4 (SLP1) - H71-3 (SLP)

        Always

        Below 1 Ω

        H54-4 (SLP1) or H71-3 (SLP) - Body ground

        Always

        10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Power Source Control / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Table 3. Power Source Control

      Tester Display

      Measurement Item/Range

      Normal Condition

      Diagnostic Note

      Steering Unlock Switch

      Steering lock condition / ON or OFF

      ON: Steering lock released (Engine switch on (ACC))

      OFF: Steering lock locked (Engine switch off)

      -

      OK

      ON (steering lock released) or OFF (steering lock locked) appears on the screen according to the steering lock condition.

      Table 4. Result

      Result

      Proceed to

      OK

      A

      NG (for LHD)

      B

      NG (for RHD)

      C

    REPLACE STEERING LOCK ACTUATOR (STEERING LOCK ECU)

    (Click here)

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)