ENTRY AND START SYSTEM(for Start Function), Diagnostic DTC:B2286, P0335

DTC Code DTC Name
B2286 Runnable Signal Malfunction
P0335 Crankshaft Position Sensor "A" Circuit

DESCRIPTION

These DTCs are stored when the engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match.

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
B2286 The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication (1- trip detection logic*) do not match.

  • AM2 No. 2 fuse

  • Certification ECU (smart key ECU assembly)

  • SFI system

  • 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 20 seconds or more with the engine switch off, and then start the engine. Make sure that the engine speed is 1000 rpm or more for 20 seconds or more after starting the engine.
P0335 The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication (1- trip detection logic*) do not match.

  • AM2 No. 2 fuse

  • Certification ECU (smart key ECU assembly)

  • SFI system

  • Wire harness or connector

 Wait for 10 seconds or more with the engine idling.

*: 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

  • When the signal sent via either the direct line or CAN communication is malfunctioning and indicates no vehicle speed, there is no effect on vehicle behavior. (A malfunction is detected after the engine switch is turned on (IG).)


  • When the signal sent via either direct line or CAN communication is malfunctioning and indicates that the vehicle is moving, the engine cannot be started. However, the engine can be started after the engine switch has been turned off.

  • When the signal sent via either direct line or CAN communication is malfunctioning and indicates no vehicle speed, there is no effect on vehicle behavior.


  • When the signal sent via either direct line or CAN communication is malfunctioning and indicates that the vehicle is moving:


    • If the following conditions are met, it is determined that the malfunction is not in CAN communication but in the direct line (TACH).

    • When the engine switch is pressed, the system controls the engine based on the starter OFF permission flag (perfect injection signal judgment) via CAN communication, causing the engine to stop cranking.

    • When the engine switch is pressed and held, the system controls the engine based on the engine speed signal via CAN communication, causing the engine to stop cranking.


    • If the following conditions are met, it is determined that the malfunction is not in the direct line (TACH) but in CAN communication.

    • When the engine switch is pressed, the system controls the engine based on the engine speed signal via direct line, causing the engine to stop cranking.

    • When the engine switch is pressed and held, the system controls the engine based on the engine speed signal via direct line, causing the engine to stop cranking.


    • If the following conditions are met, it is determined that there is a malfunction in both CAN communication and the direct line (TACH).

    • When the engine switch is pressed, the engine stops cranking after 6 seconds.

    • When the engine switch is pressed and held, the engine remains cranking for up to 30 seconds.
Related Data List and Active Test Items
DTC No. Data List Item Active Test Item

B2286

P0335

    Power Source Control

  • Engine Condition


    Engine

  • Engine Speed

 -

WIRING DIAGRAM

A004KQPE07
*a from MAIN Fuse
*b AM2 NO.2
*c Certification ECU (Smart Key ECU Assembly)
*d CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off to troubleshoot:

    Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the GTS and vehicle begins.

  • 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.

  • Before replacing the certification ECU (smart key ECU assembly), refer to the entry and start system (for Entry Function) Click here.

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

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

PROCEDURE


  1. READ VALUE USING GTS (ENGINE CONDITION, ENGINE SPEED)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Condition Condition of engine / Stop or Run

      Stop: Engine is stopped

      Run: Engine is running

      		 -

    6. Enter the following menus: Powertrain / Engine / Data List.

    7. According to the display on the GTS, read the Data List.

      Engine
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Speed Engine speed / 0 to 16383 r/min Changes according to engine speed -
      OK
      The Data List items change in accordance with the engine condition.
      Result
      Result Proceed to
      NG A
      OK B

    B

    GO TO SFI SYSTEM (HOW TO PROCEEDWITH TROUBLESHOOTING) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A004IP3E01
    Text in Illustration
    *a

    Rear view of harness connected

    (to Certification ECU (Smart Key ECU Assembly))

    1. Disconnect the D48 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
      D48-2 (+B) - Body ground Always 9.5 to 16 V

    NG

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

    OK

  3. CHECK HARNESS AND CONNECTOR (GROUND)

    A004KBGE01
    Text in Illustration
    *a

    Rear view of harness connected

    (to Certification ECU (Smart Key ECU Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D48-11 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ECM)


    1. Disconnect the D48 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A35 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D48-17 (TACH) - A35-15 (TACH) Always Below 1 Ω
      D48-17 (TACH) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Reconnect the A35 ECM connector.

    2. A004IR6E01
      Text in Illustration
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      Reconnect the D48 certification ECU (smart key ECU assembly) connector.

    3. Check the signal waveform according to the condition(s) in the table below.

      OK
      Tester Connection Condition Specified Condition
      D48-17 (TACH) - Body ground Engine is stopped No pulse generated
      Engine is running Pulse generated

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    GO TO SFI SYSTEM (HOW TO PROCEEDWITH TROUBLESHOOTING) Click here