SMART ENTRY AND START SYSTEM (for Start Function), 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

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 Code 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 fuse

  • Engine control system

  • 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 20 seconds or more with the engine switch off, and then start the engine and maintain an engine speed of 1000 rpm or more for 20 seconds or more.
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 fuse

  • Engine control system

  • Certification ECU (smart key ECU assembly)

  • Wire harness or connector

Allow the engine to idle for 10 seconds or more.

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).


      • 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 (NE) 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 (NE).


      • 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 Data List Item Active Test Item

B2286

P0335


    Power Source Control

  • Engine Condition


    Starting Control

  • Engine Speed

-

WIRING DIAGRAM

B007VP0E02

INSPECTION PROCEDURE

Note


  • When using the GTS with the vehicle engine switch off, connect the GTS to the vehicle 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 the 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 smart entry and start system (for Start Function) 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 smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

  • Before replacing the certification ECU (smart key ECU assembly) or ECM, refer to the smart entry and start system (for Start Function) 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.

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

      Stop: Engine stopped

      Run: Engine running

      -
      Starting Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Speed Engine speed/0 to 16383 r/min Fluctuates in accordance with engine speed -
      OK
      The Data List item changes in accordance with the engine condition.

    NG
    OK
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE) Click here


    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (GROUND) Click here


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


    1. Disconnect the B75 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the B72 the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B75-6 (NE) - B72-60 (NEO) Always Below 1 Ω
      B75-6 (NE) or B72-60 (NEO) - Body ground 10 kΩ or higher

    NG
    OK
  5. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Reconnect the B75 certification ECU (smart key ECU assembly) connector.

    2. Reconnect the B72 ECM connector.

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

      B007WCBE04
      Text in Illustration
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      - -
      Standard Frequency
      Tester Connection Condition Specified Condition
      B75-6 (NE) - Body ground Engine stopped No pulse generated
      Engine running Pulse generated

    NG
    OK