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.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2286 Runnable Signal Malfunction The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match. (1-trip detection logic*)

  • SFI system

  • Certification ECU (smart key ECU assembly)

  • Wire harness or connector

    DTC Output Confirmation Operation:

  • 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 do not match. (1-trip detection logic*)

  • SFI system

  • Certification ECU (smart key ECU assembly)

  • Wire harness or connector

    DTC Output Confirmation Operation:

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

  • When a malfunction occurs and the vehicle speed signal sent via either direct line or CAN communication 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 a malfunction occurs and the vehicle speed signal sent via either direct line or CAN communication 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 can be determined that the malfunction is not in the CAN communication system 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 can be determined that the malfunction is not in the direct line (NE) but in the CAN communication system.

    • 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 can be determined that there is a malfunction in both the CAN communication system 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 cranks for up to 30 seconds.
Related Data List and Active Test Items
DTC No. Data List and Active Test

B2286

P0335

    Power Source Control

  • Engine Condition


    Starting Control

  • Engine Speed

WIRING DIAGRAM

B0071LKE05

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 smart entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here

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

  • Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

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.

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. Read the Data List according to the display on the GTS.


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

      Stop: Engine stopped

      Run: Engine running

      		 -

      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 rpm Fluctuates in accordance with actual engine speed -

      Body Electrical > Starting Control > Data List
      Tester Display
      Engine Speed
      OK
      The GTS display changes correctly in response to the engine condition.
      Result
      Proceed to
      OK
      NG

    OK

    GO TO SFI SYSTEM for A25A-FKS: Click here
    GO TO SFI SYSTEM for 2GR-FKS: Click here
    GO TO SFI SYSTEM for 2AR-FE: Click here

    NG

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


    1. Disconnect the A13 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A24*1, A23*2 or A22*3 ECM connector.


      • *1: for A25A-FKS

      • *2: for 2GR-FKS

      • *3: for 2AR-FE

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

      Standard Resistance
      for A25A-FKS
      Tester Connection Condition Specified Condition
      A13-16 (NE) - A24-16 (NEO) Always Below 1 Ω
      A13-16 (NE) or A24-16 (NEO) - Other terminals and body ground Always 10 kΩ or higher
      for 2GR-FKS
      Tester Connection Condition Specified Condition
      A13-16 (NE) - A23-30 (NEO) Always Below 1 Ω
      A13-16 (NE) or A23-30 (NEO) - Other terminals and body ground Always 10 kΩ or higher
      for 2AR-FE
      Tester Connection Condition Specified Condition
      A13-16 (NE) - A22-30 (NEO) Always Below 1 Ω
      A13-16 (NE) or A22-30 (NEO) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Connect the A13 certification ECU (smart key ECU assembly) connector.

    2. Connect the A24*1, A23*2 or A22*3 ECM connector.


      • *1: for A25A-FKS

      • *2: for 2GR-FKS

      • *3: for 2AR-FE

    3. B0070KWC19
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      Using an oscilloscope, check the engine speed input signal waveform at the terminal of the certification ECU (smart key ECU assembly).

      OK
      Tester Connection Condition Specified Condition
      A13-16 (NE) - Body ground Engine stopped No pulse generation
      Engine running Pulse generation
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE ECM for A25A-FKS: Click here
    REPLACE ECM for 2GR-FKS: Click here
    REPLACE ECM for 2AR-FE: Click here