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

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

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.

Tech Tips

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 CAN communication system Certification ECU (smart key ECU assembly) 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 CAN communication system Certification ECU (smart key ECU assembly) Harness or connector	Drive the vehicle for 30 seconds or more at a vehicle speed of 50 km/h (31 mph) or more.

*: Only detected while a malfunction is present and the power switch is on (IG)

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.	-
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.

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	-

WIRING DIAGRAM

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.

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 entry and start system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting Click here.
Before replacing the certification ECU (smart key ECU assembly), refer to the entry and start system (for Entry Function) precaution Click here.
After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.
Inspect the fuses of circuits related to this system before performing the following inspection procedure.

PROCEDURE

READ VALUE USING GTS (VEHICLE SPEED METER)

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Combination Meter / Data List.

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 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).

GO TO METER / GAUGE SYSTEM (SPEEDOMETER MALFUNCTION) Click here

READ VALUE USING GTS (VEHICLE SPEED SIGNAL)

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Power Source Control / Data List.

According to the display on the GTS, read the Data List.

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.

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

CHECK HARNESS AND CONNECTOR (POWER SOURCE)

Text in Illustration

*a
Rear view of wire harness connector

(to Certification ECU (Smart Key ECU Assembly))

Disconnect the certification ECU (smart key ECU assembly) connector.

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

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
F88-2 (+B) - Body ground	Power switch off	11 to 14 V

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

CHECK HARNESS AND CONNECTOR (GROUND)

Text in Illustration
*a	Rear view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))

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

Standard Resistance

Tester Connection	Condition	Specified Condition
F88-11 (E) - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - COMBINATION METER ASSEMBLY)

Disconnect the F86 certification ECU (smart key ECU assembly) connector.
Disconnect the F1 combination meter assembly connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
F86-27 (SPD) - F1-6 (+S)	Always	Below 1 Ω
F86-27 (SPD) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Reconnect the F86 and F88 certification ECU (smart key ECU assembly) connectors.
Reconnect the F1 combination meter assembly connector.
Connect an oscilloscope to terminal F86-27 (SPD) and F88-11 (E).
Turn the power switch on (IG).
Turn a wheel slowly.

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

Item	Condition
Tester Connection	F86-27 (SPD) - F88-11 (E)
Tool setting	5 V/DIV., 100 ms./DIV.
Vehicle condition	Wheel being rotated

OK
The waveform is similar to that shown in the illustration.

Tech Tips

The wavelength becomes shorter as the vehicle speed increases.

Text in Illustration
*a	Component with harness connected (Certification ECU (Smart Key ECU Assembly))

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT) Click here