Toyota Tacoma (2015-2018) Service Manual: Vehicle Speed Signal Malfunction (B2282,B2283)

Toyota Tacoma (2015-2018) Service Manual / 2gr-fks Starting / Smart Key System(for Start Function) / Vehicle Speed Signal Malfunction (B2282,B2283)

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.

HINT:

When the cable is disconnected and reconnected to the negative (-) 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 NO. 2 fuse Meter/gauge system Certification ECU (smart key ECU assembly) Wire 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	Either of the of the following malfunctions is detected (a vehicle speed sensor malfunction is detected) (1-trip detection logic*) Vehicle speed signal malfunction detection 1: Excessive deceleration is detected Vehicle speed signal malfunction detection 2: Engine speed linked detection	AM2 NO. 2 fuse Meter/gauge system Certification ECU (smart key ECU assembly) Wire harness or connector	Run the engine at an engine speed of 2000 rpm or more for 330 seconds.

*: Only detected while a malfunction is present and the engine 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 engine switch cannot be turned from on (IG) to off.	-
B2283	The power source mode is changed to off (the engine is stopped) by pressing the engine switch while the vehicle is being driven. With the electrical key transmitter sub-assembly in the cabin, even if an engine start operation is performed, the engine does not start.	-

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
The smart key system (for Start Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting.
Click here

Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
Before replacing the certification ECU (smart key ECU assembly), refer to the smart key system (for Start Function) precaution (See page ).
Inspect the fuses of circuits related to this system before performing the following inspection procedure.
After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

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 Starting Control Engine Speed Combination Meter Vehicle Speed Meter	-

DTC

Data List Item

Active Test Item

B2282

B2283

Power Source Control

Vehicle Speed Signal
Engine Condition
Power Supply Condition

Starting Control

Engine Speed

Combination Meter

Vehicle Speed Meter

PROCEDURE

1.	READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body / Combination Meter / Data List.

(e) 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 km/h (0 mph), Max.: 255 km/h (158 mph)	Almost same as actual vehicle speed (Speedometer tester)	-

OK:

Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

GO TO METER / GAUGE SYSTEM (Speedometer Malfunction)

2.	READ VALUE USING TECHSTREAM

(a) Enter the following menus: Body / Power Source Control / Data List.

(b) Read the Data List according to the display on the Techstream.

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	-

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)

3.	CHECK HARNESS AND CONNECTOR (POWER SOURCE)

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

4.	CHECK HARNESS AND CONNECTOR (GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

(a) Disconnect the C29 connector from the certification ECU (smart key ECU assembly).

(b) Disconnect the C9 connector from the combination meter assembly.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C29-5 (SPD) - C9-40 (+S)	Always	Below 1 Ω
C29-5 (SPD) or C9-40 (+S) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Reconnect the C29 certification ECU (smart key ECU assembly) connector.

(b) Reconnect the C9 combination meter assembly connector.

Text in Illustration

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Tester Connection	Condition	Tool Setting	Specified Condition
C29-5 (SPD) - C29-11 (E)	Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)	5 V/DIV., 20 ms./DIV.	Pulse generation

HINT:

The wavelength becomes shorter as the engine speed increases.

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO METER / GAUGE SYSTEM (SpeedSignal Circuit)

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