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

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

DESCRIPTION

The power management control ECU and the combination meter are connected by a cable and the CAN communication lines. This DTC is stored when the cable information of the vehicle speed signal and CAN information of the vehicle speed signal are inconsistent.

Tip:

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

DTC Code

DTC Detection Condition

Trouble Area

B2282

The cable information of the vehicle speed signal and CAN information of the vehicle speed signal are inconsistent.

  • CAN communication system

  • Power management control ECU

  • Meter/gauge system

  • Harness or connector

The skid control ECU converts signals from the speed sensor 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 power management control ECU. The power management control ECU determines the vehicle speed based on the frequencies of these pulse signals.

DTC Code

DTC Detection Condition

Trouble Area

B2283

Both conditions are met:

  • The vehicle speed decreases significantly.

  • The vehicle speed does not correspond with the engine speed.

  • Power management control ECU

  • Meter/gauge system

  • Skid control ECU

  • Speed sensor

  • Harness or connector
C166257E11
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 its respective system based on the pulse signal.

  • If a short occurs in an ECU, all systems related to the components in the diagram above will not operate normally.

WIRING DIAGRAM

A214470E19

CAUTION / NOTICE / HINT

Note:

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

  • Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.

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

PROCEDURE

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

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. Disconnect the H71 power management control ECU connector.

      U121691E02
      Table 1. Text in Illustration

      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

      *2

      Front view of wire harness connector

      (to Combination Meter Assembly)

    2. Disconnect the H62 combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H71-23 (SPD) - H62-3 (+S)

      Always

      Below 1 Ω

      H71-23 (SPD) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  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. According to the display on the intelligent tester, read the Data List.

      Table 2. Power Source Control

      Tester Display

      Measurement Item/Range

      Normal Condition

      Diagnostic Note

      Vehicle Speed Signal

      Vehicle speed signal / Stop or Run

      Stop: Vehicle stopped

      Run: Vehicle driven (5 km/h (3 mph) or higher)

      -

      OK

      Stop (Vehicle stopped) or Run (Vehicle driven) appears on the screen according the vehicle speed.

    GO TO METER/GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

    (Click here)

  5. CHECK POWER MANAGEMENT CONTROL ECU

    1. Using an oscilloscope, check the vehicle speed input signal waveform from the combination meter at the terminal of the power management control ECU.

      U122686E02
      Table 3. Text in Illustration

      *1

      Component with harness connected

      (Power Management Control ECU)

      -

      -
    2. C192841E07

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

      Standard Frequency

      Tester Connection

      Tool Setting

      Condition

      Specified Condition

      H71-23 (SPD) - Body ground

      5 V/DIV., 10 ms./DIV.

      Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)

      Correct waveform as shown in illustration
      Table 4. Result

      Result

      Proceed to

      OK (for LHD)

      A

      OK (for RHD)

      B

      NG

      C

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

    REPLACE POWER MANAGEMENT CONTROL ECU

    (Click here)

    GO TO METER/GAUGE SYSTEM (TERMINALS OF ECU)

    (Click here)