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

DTC Code DTC Name
B2285 Steering Lock Position Signal Circuit Malfunction

DESCRIPTION

The certification ECU (smart key ECU assembly) 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 battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.

DTC No. DTC Detection Condition Trouble Area DTC Output Confirmation Operation
B2285 Mismatch between the steering lock position signal from the direct line sent by the steering lock ECU and the steering lock position signal sent via LIN communication (1-trip detection logic*).

  • AM2 fuse

  • MAIN fuse

  • Steering lock actuator assembly (steering lock ECU)

  • Certification ECU (smart key ECU assembly)

  • Wire harness or connector

 Disconnect the cable from the negative (-) battery terminal, wait 30 seconds and reconnect the cable to the negative (-) battery terminal. Wait another 40 seconds or more with the engine switch off (steering locked), and then turn the engine switch on (ACC) (steering unlocked) and wait 40 seconds or more.

*: Only output while a malfunction is present and the engine switch is on (IG)

Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
The engine cannot be started. An engine start command is not output.

WIRING DIAGRAM

A005LBIE07

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the intelligent tester and vehicle begins, or 2) connect the intelligent tester to the vehicle and select "MANUAL" from the initial screen on the intelligent tester, and then select "KEY REGIST" under Model Code.

  • The entry and start system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting Click here.

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

  • Before replacing the steering lock actuator assembly (steering lock ECU), refer to the Service Bulletin.

  • After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

Tech Tips

Related Data List and Active Test Items

DTC No. Data List Item Active Test Item
B2285

Power Source Control


  • Steering Unlock Switch

Entry & Start


  • Power Supply Short

  • Lock Bar Stuck Error

  • Motor Driver Short

  • Motor Driver Open

 -

Tech Tips

If the entry key indicator in the combination meter assembly illuminates in green, the steering lock bar may be stuck.

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 B2785 is not output.

    NG

    GO TO LIN COMMUNICATION SYSTEM Click here

    OK

  2. 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 State of steering unlock sensor signal output from steering lock actuator assembly/ON or OFF

      ON: Steering unlocked*1

      OFF: Steering locked*2

      • When the shift lever is in P (for CVT) and the engine switch is off, if any door is opened or closed, the steering is locked.

      • When the electrical key transmitter is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering unlocks.

      • The engine cannot be started when the steering unlock signal is off.

      Tech Tips


      • If the engine switch cannot be turned on (IG), proceed to the next step.

      • *1: When the electrical key transmitter is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering unlocks.

      • *2: When the shift lever is in P (for CVT) and the engine switch is off, if any door is opened or closed, the steering is locked.

      Result
      Result Proceed to
      Data List item does not change A
      Data List item changes (for LHD) B
      Data List item changes (for RHD) C

    B

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

    C

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

    A

  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A005GV2E01
    Text in Illustration
    *a

    Rear view of harness connected

    (to Certification ECU (Smart Key ECU Assembly))

    1. Disconnect the F65 certification ECU (smart key ECU assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F65-2 (+B) - Body ground Always 9.5 to 16 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE

    OK

  4. CHECK HARNESS AND CONNECTOR (GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-11 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A005IQSE01
      Text in Illustration
      *a

      Component with harness connected

      (Steering Lock Actuator Assembly (Steering Lock ECU))

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      Positive (+) tester probe → F64-4 (SLP1)

      Negative (-) tester probe → Body ground

      		 Steering locked*1 10 kΩ or higher

      Positive (+) tester probe → F64-4 (SLP1)

      Negative (-) tester probe → Body ground

      		 Steering unlocked*2 Below 1 Ω

      Tech Tips


      • *1: When the electrical key transmitter is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering unlocks.

      • *2: When the shift lever is in P (for CVT) and the engine switch is off, if any door is opened or closed, the steering is locked.

      • With the connector connected to the ECU, measure the resistance from the rear of the connector.

      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

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

    C

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

    A

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU))


    1. Disconnect the F63 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the F61 steering lock actuator assembly (steering lock ECU) connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      F63-26 (SLP) - F61-4 (SLP1) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F63-26 (SLP) - Body ground Always 10 kΩ or higher

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR