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

DTC Code DTC Name
B2286 Runnable Signal Malfunction

DESCRIPTION

This DTC is output when serial communication signals and multiplex communication signals in the circuit between the power source control ECU and ECM are inconsistent.

Tech Tips

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, 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
B2286 Serial communication signals and multiplex communication signals in the circuit between the power source control ECU and engine control ECU are inconsistent.

  • Multiplex communication system

  • CAN communication system

  • ECM

  • Power source control ECU

  • Wire harness or connector

WIRING DIAGRAM

A0162Z2E01

INSPECTION PROCEDURE

Tech Tips

Check the connector connection to the terminal to make sure that there is no abnormally such as a loose connection, deformations, etc.

PROCEDURE


  1. CHECK MULTIPLEX COMMUNICATION SYSTEM


    1. Clear the DTC Click here.

    2. Check for the multiplex network communication system DTCs.

      Tech Tips

      If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first.

      OK
      DTC is not output.

    NG

    GO TO MULTIPLEX COMMUNICATION SYSTEM Click here

    OK

  2. CHECK CAN COMMUNICATION SYSTEM


    1. Clear the DTC Click here.

    2. Check for the CAN communication system DTC.

      Tech Tips

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

      OK
      DTC is not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Check the Data List for proper functioning of the engine running.

      Power Source Control
      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 (POWER SOURCE CONTROL ECU - ECM) Click here

    OK

  4. REPLACE POWER SOURCE CONTROL ECU


    1. Replace the power source control ECU.


    NEXT

  5. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTC B2286 is output.

      OK
      DTC B2286 is not output.

    NG

    REPLACE ECM Click here

    OK

    END (POWER SOURCE CONTROL ECU IS DEFECTIVE)

  6. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM)


    1. A015ZO9E26

      Disconnect the J55 connector from power source control ECU.

    2. Disconnect the A5 connector from ECM.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J55-2 (TACH) - A5-15 (TACH) Always Below 1 Ω
      J55-2 (TACH) or A5-15 (TACH) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - ECM)

    OK

  7. REPLACE POWER SOURCE CONTROL ECU


    1. Replace the power source control ECU.


    NEXT

  8. CHECK FOR DTC


    1. Clear the DTC.

    2. Check for DTC B2286 is output.

      OK
      DTC B2286 is not output.

    NG

    REPLACE ECM Click here

    OK

    END (POWER SOURCE CONTROL ECU IS DEFECTIVE)