SMART KEY SYSTEM (for Start Function), Diagnostic DTC:B2282, B2283

DTC Code DTC Name
B2282 Vehicle Speed Signal Malfunction
B2283 Vehicle Speed Sensor Malfunction

DESCRIPTION

DTC B2282 is stored when the vehicle speed signal sent by the combination meter assembly via direct line and the vehicle speed signal sent via CAN communication do not match.

DTC B2283 is stored when a malfunction in the vehicle speed sensor is detected.

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
B2282 The vehicle speed signal sent by the combination meter assembly via direct line and the vehicle speed signal sent via CAN communication (1-trip detection logic*) do not match.

  • AM2 fuse

  • Meter/gauge system

  • Certification ECU (smart key ECU assembly)

  • Junction Connector

  • Wire harness or connector

 Drive the vehicle for 20 seconds at a vehicle speed of 25 km/h (16 mph) or more, and then drive the vehicle at a vehicle speed of less than 5 km/h (3 mph) for 20 seconds.
B2283

Either of the of the following malfunctions is detected (a vehicle speed sensor malfunction is detected) (1-trip detection logic*)


  • Vehicle speed signal malfunction detection 1: Excessive deceleration is detected

  • Vehicle speed signal malfunction detection 2: Engine speed linked detection

  • AM2 fuse

  • Meter/gauge system

  • Certification ECU (smart key ECU assembly)

  • Junction Connector

  • Wire harness or connector

 Run the engine at an engine speed of 2000 rpm or more for 330 seconds.

Vehicle Condition and Fail-safe Function when Malfunction Detected
DTC Code Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
B2282

  • When the signal from the direct line or CAN communication is malfunctioning and indicates that the vehicle speed is 0 km/h (0 mph), there is no effect on vehicle behavior.

  • When the signal from the direct line or CAN communication is malfunctioning and indicates that the vehicle is moving, the engine switch cannot be turned from on (IG) to off.

 -
B2283

  • The power source mode is changed to off (the engine is stopped) by pressing the engine switch while the vehicle is being driven.

  • With the electrical key transmitter sub-assembly in the cabin, even if an engine start operation is performed, the engine does not start.

 -

WIRING DIAGRAM

A01HO2ZE08

Tech Tips


  • A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.

  • If a short occurs in an ECU, all systems in the diagram above will not operate normally.

INSPECTION PROCEDURE

Note


  • When using the Techstream 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 Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Key / Trouble Codes.

  • The smart key 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 key system (for Start Function) after confirming that the communication systems are functioning properly.

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

Tech Tips

Related Data List and Active Test Items
DTC Data List Item Active Test Item

B2282

B2283

    Power Source Control

  • Vehicle Speed Signal

  • Engine Condition

  • Power Supply Condition


    Starting Control

  • Engine Speed


    Combination Meter

  • Vehicle Speed Meter

 -

PROCEDURE


  1. READ VALUE USING TECHSTREAM


    1. Connect the Techstream to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the Techstream on.

    4. Enter the following menus: Body / Combination Meter / Data List.

    5. Check the Data List for proper functioning of the vehicle speed signal.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Almost same as actual vehicle speed (Speedometer tester) -
      OK
      Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

    NG

    GO TO METER / GAUGE SYSTEM (Speedometer Malfunction) Click here

    OK

  2. READ VALUE USING TECHSTREAM


    1. Enter the following menus: Body / Power Source Control / Data List.

    2. Read the Data List according to the display on the Techstream.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle speed signal Vehicle being driven or stopped/Stop or Run

      Stop: Vehicle stopped

      Run: Vehicle being driven at 5 km/h (3 mph) or more

      		 -
      OK
      Stop (vehicle is stopped) and Run (vehicle is running) appear on the screen.

    NG

    Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A01HMX3E07
    Text in Illustration
    *a

    Rear view of wire harness connector

    (to Certification ECU (smart key ECU assembly))

    1. Disconnect the A43 connector from the certification ECU (smart key ECU assembly).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A43-2 (+B) - Body ground Always 11 to 14 V

    NG

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

    OK

  4. CHECK HARNESS AND CONNECTOR (GROUND)

    A01HMX3E08
    Text in Illustration
    *a

    Rear view of wire harness connector

    (to Certification ECU (smart key ECU assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A43-11 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - COMBINATION METER ASSEMBLY)


    1. Disconnect the I78 connector from the certification ECU (smart key ECU assembly).

    2. Disconnect the I18 connector from the combination meter assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I78-27 (SPD) - I18-9 (+S) Always Below 1 Ω
      I78-27 (SPD) or I18-9 (+S) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - JUNCTION CONNECTOR) Click here

    OK

  6. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Reconnect the I78 certification ECU (smart key ECU assembly) connector.

      A01HOMEE04
      Text in Illustration
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      		 - -

    2. Reconnect the A43 combination meter assembly connector.

    3. Connect an oscilloscope to terminal I78-27 (SPD) and A43-11 (E).

    4. Turn the engine switch on (IG).

    5. Check the signal waveform according to the condition(s) in the table below.

      Item Condition
      Tester Connection I78-27 (SPD) - A43-11 (E)
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)
      OK
      The waveform is similar to that shown in the illustration.

      Tech Tips

      When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.


    NG

    GO TO METER / GAUGE SYSTEM (Speed Signal Circuit) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - JUNCTION CONNECTOR)


    1. Disconnect the I124 junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I18-9 (+S) - I124-18 Always Below 1 Ω
      I18-9 (+S) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - JUNCTION CONNECTOR)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I78-27 (SPD) - I124-21 Always Below 1 Ω
      I78-27 (SPD) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE JUNCTION CONNECTOR