SMART 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 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.

DTC No. DTC Detection Condition Trouble Area
B2282 Speed information received by the power management control ECU via direct line and via CAN is inconsistent.

  • CAN communication system

  • Combination meter system

  • Power management control ECU

  • Wire harness or connector

WIRING DIAGRAM

A01EL3ME03

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

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

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication DTCs are output.

      Tech Tips

      If any DTCs for CAN communication system malfunction are output, inspect those DTCs first.

      OK
      CAN communication DTC is not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM

    OK

  2. CHECK SPEEDOMETER OPERATION


    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 / 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, Max.: 255 Almost same as actual speed (When driving) -
      OK
      Vehicle speed displayed on the GTS 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

  3. READ VALUE USING GTS (VEHICLE SPEED SIGNAL)


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

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

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

      Sop: Vehicle stopped

      Run: Vehicle running

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

    NG

    Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  4. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)


    1. A01EIV4E06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)

      Disconnect the D43 connector from the power management control ECU.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D43-1 (AM22) - Body ground Always 9.5 to 16 V
      D43-2 (AM21) - Body ground Always 9.5 to 16 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

    OK

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)


    1. A01EIV4E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)

      Disconnect the D43 connector from the power management control ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D43-5 (GND2) - Body ground Always Below 1 Ω
      D43-6 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

    OK

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


    1. Disconnect the E1 connector from the combination meter assembly.

      A01EKJKE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D43-23 (SPD) - E1-16 (+S) Always Below 1 Ω
      D43-23 (SPD) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)

      		 *2

      Front view of wire harness connector

      (to Combination Meter Assembly)

    NG

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

    OK

  7. INSPECT COMBINATION METER ASSEMBLY


    1. A01EMPRE04
      Text in Illustration
      *1

      Component with harness connected

      (Combination Meter Assembly)

      Remove the combination meter Click here.

    2. Reconnect the E1 connector to the combination meter assembly.

    3. Reconnect the D43 connector to the power management control ECU.

    4. Connect an oscilloscope to terminal E1-16 (+S) and body ground.

    5. Turn the engine switch on (IG).

    6. Turn the wheel slowly.

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

      Item Condition
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Driving at approx. 20 km/h (12 mph)
      OK
      The waveform is displayed as 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 POWER MANAGEMENT CONTROL ECU Click here

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


    1. A01EKPTE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *2

      Front view of wire harness connector

      (to Junction Connector)

      Disconnect the E31 connector from the junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-16 (+S) - E31-19 Always Below 1 Ω
      E1-16 (+S) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - JUNCTION CONNECTOR)

    OK

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


    1. Disconnect the D57 connector from the junction connector.

      A01EMNIE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D43-23 (SPD) - D57-13 Always Below 1 Ω
      D43-23 (SPD) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)

      		 *2

      Front view of wire harness connector

      (to Junction Connector)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - JUNCTION CONNECTOR)

    OK

    REPLACE JUNCTION CONNECTOR