SMART ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2286

DTC Code DTC Name
B2286 Runnable Signal Malfunction

DESCRIPTION

The main body ECU receives an engine speed signal and information that indicates whether the engine is running or not. It receives the engine speed signal from the ECM via a direct line, and the information about whether the engine is running is received from the ECM via CAN. If the information sent using these 2 methods is inconsistent, this DTC will be stored.

Tech Tips

When the main body ECU is replaced with a new one and the cable from the negative (-) battery terminal is connected, the power source mode becomes 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
B2286 Information received by the main body ECU via a direct line from the ECM and information received from the ECM via CAN is inconsistent.

  • CAN communication system

  • Main body ECU

  • ECM

  • Wire harness or connector

WIRING DIAGRAM

A01CFFYE04

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 CAN COMMUNICATION SYSTEM


    1. Check for CAN communication system DTCs Click here.

      Tech Tips

      If any DTCs for the CAN communication system are output, inspect those DTCs first.

      OK
      CAN communication DTCs are not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER


    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 / Main Body / Data List.

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

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Condition Engine condition / Stop or Run

      Stop: Engine is stopped

      Run: Engine is running

      		 -
      OK
      Stop (engine is stopped) and Run (engine is running) appear on the screen.

    NG

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Click here

    OK

  3. REPLACE MAIN BODY ECU


    1. Replace the main body ECU Click here.


    NEXT

  4. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check if DTC B2286 is output.

      Result
      Result Proceed to
      DTC B2286 is not output A
      DTC B2286 is output (for 2GR-FE) B
      DTC B2286 is output (for 2AZ-FE) C

    B

    REPLACE ECM (for 2GR-FE) Click here

    C

    REPLACE ECM (for 2AZ-FE) Click here

    A

    END (MAIN BODY ECU WAS DEFECTIVE)

  5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM)


    1. Disconnect the G50 connector from the main body ECU.

    2. Disconnect the A8 connector from the ECM.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G50-8 (TACH) - A8-15 (TACH) Always Below 1 Ω
      G50-8 (TACH) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU - ECM)

    OK

  6. REPLACE MAIN BODY ECU


    1. Replace the main body ECU Click here.


    NEXT

  7. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check if DTC B2286 is output.

      Result
      Result Proceed to
      DTC B2286 is not output A
      DTC B2286 is output (for 2GR-FE) B
      DTC B2286 is output (for 2AZ-FE) C

    B

    REPLACE ECM (for 2GR-FE) Click here

    C

    REPLACE ECM (for 2AZ-FE) Click here

    A

    END (MAIN BODY ECU WAS DEFECTIVE)