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

DTC Code DTC Name
B2286 Runnable Signal Malfunction
B228A Engine Speed Signal Circuit
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*) (w/o Stop and start System)

  • AM2 NO. 3 fuse

  • 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.

B228A

Engine Speed Signal Circuit

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*). (w/ Stop and Start System)

  • AM2 NO. 3 fuse

  • 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*).

  • AM2 NO. 3 fuse

  • 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.

  • *: Only detected while a malfunction is present and the engine switch is on (IG).

Table 1. 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 can be 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 can be 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 can be 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.
Table 2. Related Data List and Active Test Items

DTC No.

Data List and Active Test

B2286*1

B228A*2

P0335

  • Power Source Control

  • Engine Condition

  • Starting Control

  • Engine Speed

  • *1: w/o Stop and Start System

  • *2: w/ Stop and Start System

WIRING DIAGRAM

B344993E22

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 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 entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here

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

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

    Click here

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

Tip:

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 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 (HOW TO PROCEED WITH TROUBLESHOOTING)

    Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    Click here

    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)

    Click here

    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 E49 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A34 ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E49-6 (NE) - A34-44 (NEO)

      Always

      Below 1 Ω

      E49-6 (NE) or A34-44 (NEO) - Body ground

      Always

      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. Reconnect the E49 certification ECU (smart key ECU assembly) connector.

    2. B368778C10

      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      Reconnect the A34 ECM connector.

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

      Standard Frequency

      Tester Connection

      Condition

      Specified Condition

      E49-6 (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