ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2282

DTC Code DTC Name
B2282 Vehicle Speed Signal Malfunction

DESCRIPTION

The power management control ECU*1 or power source control ECU*2 receives vehicle speed information using 2 methods. It receives a speed signal from the meter ECU. It also receives speed information from the meter ECU via CAN. If the information sent using these 2 methods is inconsistent, this DTC will be stored.

Tech Tips

When the power management control ECU*1 or power source control ECU*2 is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC No. DTC Detection Condition Trouble Area
B2282 The speed information received by the power management control ECU*1 or power source control ECU*2 from the meter ECU via a direct line and via CAN is inconsistent.

  • AM2 No. 2 fuse

  • MAIN fuse

  • Combination meter assembly

  • Power management control ECU*1

  • Power source control ECU*2

  • Wire harness or connector

*1: for 1KR-FE and 1NR-FE

*2: for 1ND-TV

WIRING DIAGRAM

A011AAOE03

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 wiring diagram will not operate normally.

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A011B8UE33
    Text in Illustration
    *A for 1KR-FE and 1NR-FE
    *B for 1ND-TV
    *1

    Rear view of wire harness connector

    (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
    *2

    Rear view of wire harness connector

    (to Power Source Control ECU) (for 1ND-TV)

    1. Disconnect the D38 or D73 ECU connector.

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


      1. for 1KR-FE and 1NR-FE

        Standard Voltage
        Tester Connection Condition Specified Condition
        D38-2 (AM21) - Body ground Always 9.5 to 16 V
        D38-1 (AM22) - Body ground

      2. for 1ND-TV

        Standard Voltage
        Tester Connection Condition Specified Condition
        D73-2 (AM21) - Body ground Always 9.5 to 16 V
        D73-1 (AM22) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (GROUND)

    A011B8UE34
    Text in Illustration
    *A for 1KR-FE and 1NR-FE
    *B for 1ND-TV
    *1

    Rear view of wire harness connector

    (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
    *2

    Rear view of wire harness connector

    (to Power Source Control ECU) (for 1ND-TV)

    1. Disconnect the D38 or D73 ECU connector.

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


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        D38-6 (GND) - Body ground Always Below 1 Ω
        D38-5 (GND2) - Body ground

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        D73-6 (GND) - Body ground Always Below 1 Ω
        D73-5 (GND2) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (ECU - COMBINATION METER ASSEMBLY)


    1. A011946E02
      Text in Illustration
      *A for 1KR-FE and 1NR-FE
      *B for 1ND-TV
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
      *2

      Rear view of wire harness connector

      (to Power Source Control ECU) (for 1ND-TV)
      *3

      Front view of wire harness connector

      (to Combination Meter Assembly)

      Disconnect the D38 or D73 ECU connector

    2. Disconnect the D1 combination meter assembly connector

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


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        D1-16 (+S) - D38-23 (SPD) Always Below 1 Ω
        D38-23 (SPD) - Body ground Always 10 kΩ or higher

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        D1-16 (+S) - D73-23 (SPD) Always Below 1 Ω
        D73-23 (SPD) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)


    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 / 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 Specified Condition
      Vehicle speed signal Vehicle speed signal/Stop or Run

      Stop: Vehicle stopped

      Run: Vehicle running

      		 -
      OK
      Stop (vehicle is stopped) and Run (vehicle is running) appear on the screen.
      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE and 1NR-FE) B
      NG (for 1ND-TV) C

    B

    INSPECT POWER MANAGEMENT CONTROL ECU Click here

    C

    INSPECT POWER SOURCE CONTROL ECU Click here

    A

    GO TO METER / GAUGE SYSTEM Click here

  5. INSPECT POWER MANAGEMENT CONTROL ECU


    1. A0118F0E05

      Reconnect the power management control ECU connectors.

    2. Connect an oscilloscope to terminal D38-23 (SPD) and body ground.

    3. Turn the engine switch on (IG).

    4. Turn the wheel slowly.

      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)
    5. A0117GJE01

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

      OK
      Tester Connection Tool Setting Vehicle Condition Specified Condition
      D38-23 (SPD) - Body ground 5 V/DIV., 20 ms./DIV. Driving at approx. 5 km/h (3 mph) Correct waveform as shown in illustration

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  6. INSPECT POWER SOURCE CONTROL ECU


    1. A0118F0E06

      Reconnect the power source control ECU connectors.

    2. Connect an oscilloscope to terminal D73-23 (SPD) and body ground.

    3. Turn the engine switch on (IG).

    4. Turn the wheel slowly.

      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Source Control ECU)
    5. A0117GJE01

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

      OK
      Tester Connection Tool Setting Vehicle Condition Specified Condition
      D73-23 (SPD) - Body ground 5 V/DIV., 20 ms./DIV. Driving at approx. 5 km/h (3 mph) Correct waveform as shown in illustration

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

    REPLACE POWER SOURCE CONTROL ECU Click here