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*1 or power source control ECU*2 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.

Tech Tips

When the power management control ECU*1 or power source control ECU*2 is replaced with a new one and the cable is connected to the negative (-) battery terminal, 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
B2285 Information received by the power management control ECU*1 or power source control ECU*2 from the steering lock actuator assembly (steering lock ECU) via a direct line and a via the LIN communication line is inconsistent.

  • AM2 No. 2 fuse

  • MAIN fuse

  • Steering lock actuator assembly (steering lock ECU)

  • Power management control ECU*1

  • Power source control ECU*2

  • Wire harness or connector

*1: for 1KR-FE and 1NR-FE

*2: for 1ND-TV

WIRING DIAGRAM

A0117QZE02

INSPECTION PROCEDURE

Note

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

Tech Tips

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

PROCEDURE


  1. CHECK FOR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Clear the DTCs Click here.

    5. Check if DTC B2287 is output.

      OK
      DTC B2287 is not output.

    NG

    GO TO DTC (B2287) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A011B8UE33
    Text in Illustration
    *A for 1KR-FE and 1NR-FE
    *B for 1ND-TV
    *1

    Rear view of wire harness connector

    (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
    *2

    Rear view of wire harness connector

    (to Power Source Control ECU) (for 1ND-TV)

    1. Disconnect the D38 or D73 ECU connector.

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


      1. for 1KR-FE and 1NR-FE

        Standard Voltage
        Tester Connection Condition Specified Condition
        D38-2 (AM21) - Body ground Always 9.5 to 16 V
        D38-1 (AM22) - Body ground

      2. for 1ND-TV

        Standard Voltage
        Tester Connection Condition Specified Condition
        D73-2 (AM21) - Body ground Always 9.5 to 16 V
        D73-1 (AM22) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (GROUND)

    A011B8UE34
    Text in Illustration
    *A for 1KR-FE and 1NR-FE
    *B for 1ND-TV
    *1

    Rear view of wire harness connector

    (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
    *2

    Rear view of wire harness connector

    (to Power Source Control ECU) (for 1ND-TV)

    1. Disconnect the D38 or D73 ECU connector.

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


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        D38-6 (GND) - Body ground Always Below 1 Ω
        D38-5 (GND2) - Body ground

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        D73-6 (GND) - Body ground Always Below 1 Ω
        D73-5 (GND2) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT STEERING LOCK ACTUATOR ASSEMBLY


    1. A011BAKE18
      Text in Illustration
      *1

      Component with harness connected

      (Steering Lock Actuator Assembly (Steering Lock ECU))

      Reconnect the D33 steering lock actuator assembly (steering lock ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (SLP1) - Body ground Steering lock 10 kΩ or higher
      Steering unlock Below 1 Ω

    NG

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY Click here

    OK

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


    1. A0117FXE02
      Text in Illustration
      *A for 1KR-FE and 1NR-FE
      *B for 1ND-TV
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
      *2

      Rear view of wire harness connector

      (to Power Source Control ECU) (for 1ND-TV)
      *3

      Front view of wire harness connector

      (to Steering Lock Actuator Assembly (Steering Lock ECU))

      Disconnect the D38 or D73 ECU connector.

    2. Disconnect the D33 steering lock ECU connector.

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


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        D38-3 (SLP) - D33-4 (SLP1) Always Below 1 Ω
        D38-3 (SLP) - Body ground 10 kΩ or higher

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        D73-3 (SLP) - D33-4 (SLP1) Always Below 1 Ω
        D73-3 (SLP) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Turn the engine switch on (IG).

    2. Turn the intelligent tester on.

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

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

      Power Source Control
      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.

      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE and 1NR-FE) B
      NG (for 1ND-TV) C

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    C

    REPLACE POWER SOURCE CONTROL ECU Click here

    A

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY Click here