ENTRY AND START SYSTEM(for Start Function), Diagnostic DTC:B2286, B228A, P0335

DTC Code DTC Name
B2286 Runnable Signal Malfunction
B228A Engine Speed Signal Circuit
P0335 Crankshaft Position Sensor "A" Circuit

DESCRIPTION

The certification ECU (smart key ECU assembly) receives an engine speed signal and information that indicates whether the engine is running or not. It receives the engine speed signal from the ECM via a direct line, and the information about whether the engine is running is received from the ECM via CAN. If the information sent using these 2 methods is inconsistent, this DTC will be stored.

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 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 Mismatch between the engine speed signal from the direct line sent by the ECM and the engine speed signal sent via CAN communication (1-trip detection logic*).

  • AM2 fuse

  • MAIN fuse

  • Certification ECU (smart key ECU assembly)

  • SFI system (except 1ND-TV)

  • ECD system (for 1ND-TV)

  • 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.
B228A Mismatch between the engine speed signal from the direct line sent by the ECM and the engine speed signal sent via CAN communication (1-trip detection logic*).

  • AM2 fuse

  • MAIN 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 Mismatch between the engine speed signal from the direct line sent by the ECM and the engine speed signal sent via CAN communication (1-trip detection logic*).

  • 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 "P0335" is output, the engine cannot be stared or runs rough.


  • When a malfunction occurs in the direct line or CAN communication signal while a trip is not being performed, there is no effect on vehicle behavior.


  • When a malfunction occurs in the direct line or CAN communication signal while a trip is being performed, the engine cannot be started when the power source mode is on (IG). However, when the power source mode is not on (IG), the engine can be started.

  • When a malfunction occurs in the direct line or CAN communication signal while a trip is being performed, there is no fail-safe function.


  • When a malfunction occurs in the direct line or CAN communication signal while a trip is not being performed, the fail-safe function behaves as follows:


    • CAN communication is normal and the engine speed signal from the direct line is abnormal:


    • If the engine switch is pressed briefly, cranking is stopped based on the starter OFF permission flag received via CAN communication.

    • If the engine switch is pressed and held, cranking stops according to the engine speed signal sent via CAN communication.


    • If the engine switch is pressed briefly, cranking stops according to the engine speed signal from the direct line.

    • If the engine switch is pressed and held, cranking stops according to the engine speed signal from the direct line.


    • Both CAN communication and the engine speed signal from the direct line are abnormal:


    • If the engine switch is pressed briefly, cranking stops after 6 seconds elapse.

    • If the engine switch is pressed and held, cranking is maintained for a maximum of 30 seconds.

WIRING DIAGRAM

A005HAOE06

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the intelligent tester and vehicle begins, or 2) connect the intelligent tester to the vehicle and select "MANUAL" from the initial screen on the intelligent tester, and then select "KEY REGIST" under Model Code.

  • 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.

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

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

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

Tech Tips

Related Data List and Active Test Items

DTC No. Data List Item Active Test Item
B2286

Power Source Control


  • Engine Condition

Starting Control


  • Engine Speed

 -
B228A

Power Source Control


  • Engine Condition

Starting Control


  • Engine Speed

 -
P0335

Power Source Control


  • Engine Condition

Starting Control


  • Engine Speed

 -

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (ENGINE CONDITION, ENGINE SPEED)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Read the Data List according to the display on the intelligent tester.

      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

      		 -
      Starting Control
      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 (for 1NZ-FE) B
      OK (for 1NR-FE) C
      OK (for 1ND-TV) D

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

    D

    GO TO ECD SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A005GV2E01
    Text in Illustration
    *a

    Rear view of harness connected

    (to Certification ECU (Smart Key ECU Assembly))

    1. Disconnect the F65 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
      F65-2 (+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)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-11 (E) - 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 F65 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A58*1 or A59*2 ECM connector.


      • *1: except 1ND-TV

      • *2: for 1ND-TV

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

      Standard Resistance (Check for Open)
      except 1ND-TV
      Tester Connection Condition Specified Condition
      F65-16 (NE) - A58-30 (NEO) Always Below 1 Ω
      for 1ND-TV
      Tester Connection Condition Specified Condition
      F65-16 (NE) - A59-79 (NEO) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F65-16 (NE) - 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 A58*1 or A59*2 ECM connector.


      • *1: except 1ND-TV

      • *2: for 1ND-TV

    2. A005J8KE01
      Text in Illustration
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      Reconnect the F65 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
      F65-16 (NE) - Body ground Engine is stopped No pulse generated
      Engine is running Pulse generated
      Result
      Result Proceed to
      OK A
      NG (for 1NZ-FE) B
      NG (for 1NR-FE) C
      NG (for 1ND-TV) D

    A

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

    D

    GO TO ECD SYSTEM Click here