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SMART ENTRY AND START SYSTEM(for Start Function), Diagnostic DTC:B2282, B2283

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

Tip:

When the cable is disconnected and reconnected to the negative (-) auxiliary 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

  • Power management control ECU

  • 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 Vehicle speed signal malfunction detection : Excessive deceleration is detected (1-trip detection logic*)

  • AM2 fuse

  • Meter/gauge system

  • Power management control ECU

  • Junction Connector

  • Wire harness or connector

 Drive the vehicle for 30 seconds or more at a vehicle speed of 50 km/h (31 mph) or more.

Table 1. 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 power switch cannot be turned from on (IG) to off.

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B2283

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

  • With the electrical key transmitter sub-assembly in the cabin, even if a hybrid control system start operation is performed, the hybrid control system does not start.

 Steering lock operation is prohibited.
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WIRING DIAGRAM

Tip:

  • 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.

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CAUTION / NOTICE / HINT

Note:

  • When using the GTS with the vehicle power switch off, connect the GTS to the vehicle 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 the 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 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 entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

  • 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.

Tip:
Table 2. 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


  • Combination Meter

  • Vehicle Speed Meter

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PROCEDURE


  1. Click here

    READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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

      Table 3. Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter Vehicle speed/Min.: 0, Max.: 255 Almost same as actual vehicle speed (Speedometer tester) -
      OK
      Vehicle speed displayed on the GTS is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

  2. Click here

    READ VALUE USING GTS


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

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

      Table 4. 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.

  3. Click here

    CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    1. Disconnect the H1 and H2 power management control ECU connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H1-1 (AM22) - Body ground Power switch off 11 to 14 V
      H2-7 (AM21) - Body ground Power switch off 11 to 14 V
      Table 5. Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Management Control ECU)

    • OKClick here
    • NG

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

  4. Click here

    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
      H1-5 (E01) - Body ground Always Below 1 Ω
      H1-6 (E1) - Body ground Always Below 1 Ω
      H2-4 (E12) - Body ground Always Below 1 Ω
      H2-5 (E02) - Body ground Always Below 1 Ω
      Table 6. Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Management Control ECU)

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION METER ASSEMBLY)


    1. Disconnect the A31 power management control ECU connector.

    2. Disconnect the H14 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A31-14 (SPDI) - H14-19 (+S) Always Below 1 Ω
      A31-14 (SPDI) or H14-19 (+S) - Body ground Always 10 kΩ or higher

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    CHECK POWER MANAGEMENT CONTROL ECU


    1. A0007R3E02

      Reconnect the A31 power management control ECU connector.

    2. Reconnect the H14 combination meter assembly connector.

    3. Connect an oscilloscope to terminal A31-14 (SPDI) and A31-6 (E1).

    4. Turn the power switch on (IG).

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

      Item Condition
      Tester Connection A31-14 (SPDI) - A31-6 (E1)
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)
      OK
      The waveform is similar to that shown in the illustration.
      Tip:

      The wavelength becomes shorter as the vehicle speed increases.

      Table 7. Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

    • OK

      REPLACE POWER MANAGEMENT CONTROL ECU (Click here)

    • NG

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

  7. Click here

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


    1. Disconnect the H115 junction connector.

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

      Standard Resistance
      Table 8. for LHD
      Tester Connection Condition Specified Condition
      H14-19 (+S) - H115-20 Always Below 1 Ω
      H14-19 (+S) or H115-20 - Body ground Always 10 kΩ or higher
      Table 9. for RHD
      Tester Connection Condition Specified Condition
      H14-19 (+S) - H114-12 Always Below 1 Ω
      H14-19 (+S) or H114-12 - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - JUNCTION CONNECTOR)


    1. Disconnect the H114 junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A31-14 (SPDI) - H114-14 Always Below 1 Ω
      A31-14 (SPDI) or H114-14 - Body ground Always 10 kΩ or higher

    • OK

      REPLACE JUNCTION CONNECTOR

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR