ENTRY AND START SYSTEM, Diagnostic DTC:B2282, B2283

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

DESCRIPTION

The main body ECU and the combination meter are connected with a cable and the CAN communication line. DTC B2282 is output when signals, transmitted through the cable and the communication line, do not match.

DTC Code Detection Condition Trouble Area
B2282

Following conditions are met:


  • Signals between main body ECU and combination meter are inconsistent


  • Malfunction is detected in circuit between vehicle speed sensor and combination meter

  • Main body ECU


  • Combination meter


  • Harness or connector

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

DTC Code Detection Condition Trouble Area
B2283

When both conditions below are met:


  • Vehicle speed decreases significantly


  • Vehicle speed does not correspond with engine speed

  • Main body ECU


  • Combination meter


  • Speed sensor


  • Skid control ECU


  • Harness or connector
A001DOQE01

WIRING DIAGRAM

A001CLRE03
*a CAN Line
*b Combination Meter
*c Main Body ECU

PROCEDURE


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


    1. Use the Data List to check if the vehicle speed signal is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Signal Vehicle speed signal/STOP or RUN

      STOP: Vehicle is stopped

      RUN: Vehicle is running

      		 -
      OK
      STOP appears on screen.

    NG

    REPLACE MAIN BODY ECU

    OK

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

    A001941E03
    *1 Front view of wire harness connector: (to Main Body ECU)
    *2 Front view of wire harness connector: (to Combination Meter)

    1. Disconnect the L11 main body ECU connector.

    2. Disconnect the L10 combination meter connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L11-9 (SPD) - L10-10 (+S) Always Below 1 Ω
      L11-9 (SPD) or L10-10 (+S) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MAIN BODY ECU (OPERATION)


    1. Temporarily replace the main body ECU with a new or normally functioning one.

    2. Check that the engine starts normally.

      OK
      Engine starts normally.

    OK

    END (MAIN BODY ECU IS FAULTY)

    NG

    GO TO COMBINATION METER SYSTEM Click here