PUSH-BUTTON START, Diagnostic DTC:B2286, P0335

DTC Code DTC Name
B2286 Runnable Signal Malfunction
P0335 Crankshaft Position Sensor Circuit Malfunction (NE Signal)

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


  • DTC B2286 is not stored for vehicles with stop and start system.

  • DTC B228A is stored only for vehicles with stop and start system.

  • When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
B2286 Runnable Signal Malfunction 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 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, then start the engine and maintain an engine speed of 1000 rpm or more for 20 seconds or more.
P0335 Crankshaft Position Sensor Circuit Malfunction (NE Signal) 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 fuse

  • Certification ECU (smart key ECU assembly)

  • SFI system

  • Wire harness or connector

 Allow the engine to idle for 10 seconds or more.

*: Only detected 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 (NE).


      1. 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.

      2. 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 (NE) but in CAN communication.


      1. 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.

      2. 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 (NE).


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

      2. 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 Data List Item Active Test Item

B2286

P0335

    Power Source Control:

  • Engine Condition


    Starting Control:

  • Engine Speed

 -

WIRING DIAGRAM

B002CTRE03

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • The push-button start uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the push-button start after confirming that the communication systems are functioning properly.

  • Before replacing the certification ECU (smart key ECU assembly) or ECM, refer to the push-button start precaution.

    Click here

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

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

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 or Starting Control / Data List.

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


      Body Electrical > Power Source Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine Condition Engine state Stop or Run

      Run: Engine running

      Stop: Engine stopped

      		 -

      Body Electrical > Power Source Control > Data List
      Tester Display
      Engine Condition

      Body Electrical > Starting Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine Speed Engine speed 0 to 16383 r/min Fluctuates in accordance with engine speed -

      Body Electrical > Starting Control > Data List
      Tester Display
      Engine Speed
      OK
      The Data List item changes in accordance with the engine condition.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    1. B002EYSC72
      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the 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
      A21-2 (+B) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. CHECK HARNESS AND CONNECTOR (GROUND)


    1. B002EYSC73
      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A21-11 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A12 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A21-16 (NE) - A12-31 (NEO) Always Below 1 Ω
      A21-16 (NE) or A12-31 (NEO) - Body ground 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B002DPSC15
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

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

    2. Check the engine speed input signal waveform at the terminal of the certification ECU.

      Standard Frequency
      Tester Connection Condition Specified Condition
      A21-16 (NE) - Body ground Engine stopped No pulse generated
      Engine running Pulse generated
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here