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SMART ENTRY AND START SYSTEM, 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

The skid control ECU converts these signals into 4-pulse signals and sends them to the combination meter. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the main body ECU. The main body ECU determines the vehicle speed based on the frequency of these pulse signals.

The main body ECU and the combination meter are connected by a cable and the CAN. DTC B2282 is output if the cable information and CAN information are inconsistent.

Tip:

If the main body ECU is replaced with a new one while the negative (-) battery terminal is connected, the power source mode will be in IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU is replaced, perform the registration procedure for the engine immobiliser system.

DTC No. DTC Detection Condition Trouble Area
B2282 Cable information and CAN information between the main body ECU and the combination meter are inconsistent

  • CAN communication system

  • Combination meter system

  • Main body ECU (Instrument panel junction block)

  • Wire harness or connector
B2283

When either of conditions below is met:


  • Over-deceleration in vehicle speed

  • Vehicle speed and engine speed do not match

  • DTC B2282 detection area

  • Combination meter

  • Speed sensor

  • Skid control ECU

  • Main body ECU (Instrument panel junction block)

  • Wire harness or connector
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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 preceding diagram will not operate normally.

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Check for CAN communication system DTCs (Click here).

      Tip:

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

      Result
      Result Proceed to
      CAN communication DTC is not output A
      CAN communication DTC is output B

  2. Click here

    CHECK SPEEDOMETER OPERATION


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

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

    4. Check the values by referring to the values in the following table.

      Table 1. Combination Meter:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter Vehicle speed/Min.: 0 km/h (0mph), Max.: 255 km/h (158 mph) Almost same as actual speed (When driving) -
      OK
      Vehicle speed displayed on the tester is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

  3. Click here

    READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Read the DATA LIST according to the displays on the tester screen.

      Table 2. Body:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Spd Sig Vehicle speed signal / STOP or RUN

      STOP: Vehicle is stopped

      Run: Vehicle is running

      		 -
      OK
      "STOP" (Vehicle is stopped) and "OFF" (Vehicle is running) appear on the screen.

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    CHECK HARNESS AND CONNECTOR (COMBINATION METER - MAIN BODY ECU)


    1. Disconnect the E1 meter connector.

    2. Disconnect the D8 ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D8-9 (SPD) - E1-9 (+S) Always Below 1 Ω

  5. Click here

    INSPECT COMBINATION METER ASSEMBLY


    1. A017G2RE01

      Check the output waveform.


      1. Remove the combination meter with the connector(s) still connected (Click here).

      2. Connect the oscilloscope to terminals E1-9 (+S) and body ground.

      3. Turn the engine switch on (IG).

      4. Turn the wheel slowly.

      5. 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
        OK
        The waveform is displayed as shown in the illustration.
        Tip:

        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.


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    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - JUNCTION CONNECTOR)


    1. Disconnect the D46 connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D8-9 (SPD) - D46-5 Always Below 1 Ω

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    GO TO CAN COMMUNICATION SYSTEMClick here

  8. Click here

    GO TO METER / GAUGE SYSTEMClick here

  9. Click here

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  10. Click here

    GO TO METER / GAUGE SYSTEMClick here

  11. Click here

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  12. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU - JUNCTION CONNECTOR)

  13. Click here

    REPLACE JUNCTION BLOCK