Circuit description

This DTC is output when the engine speed signal sent from the ECM via the direct line and the engine speed signal sent via the CAN communication do not match.

NOTE: If you remove and then reconnect the battery cable, the power returns to the mode it was before you removed the cable.

DTC DETECTION CONDITION

DTC No.

DTC detection status

Faulty part

DTC Output Confirmation Operation

B2286

The engine speed signal sent by the ECM via the direct line and the engine speed signal sent via the CAN communication (1-trip detection logic⁽¹⁾) do not match.

AM2 No. 2 fuse
Collation ECM (smart key ECM assembly)
EFI system
Wiring harness or connector

Remove the cable from the battery ground terminal (-), and after waiting 30 seconds, reconnect the cable to the battery ground terminal (-). With the engine switch off, wait 20 seconds, and start the engine. With the engine speed at 1000 r/min or faster, do not stop the engine for 20 seconds or more after starting it.

⁽¹⁾	The code is output only when the problem is found and the engine switch is on (IG).

Vehicle status and failsafe upon detection

VEHICLE STATUS AND FAILSAFE UPON DETECTION

Vehicle status when a problem is detected	Failsafe function when a problem is detected
If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle speed is not displayed, there is no effect on vehicle operations. (When the engine switch is turned on (IG), the problem is detected.) If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle is running, you cannot start the engine. However, if you turn the engine switch off, you can start the engine.	If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle speed is not displayed, there is no effect on vehicle operations. If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle is running: If the following conditions are met, the problem can be determined to be in the direct line (TACH), not the CAN communication. If you press the engine switch and the system controls the engine based on the starter OFF permission flag (perfect injection signal decision) via the CAN communication, the engine stops cranking. If you press the engine switch and the system controls the engine based on the engine speed via the CAN communication, the engine stops cranking. If the following conditions are met, the problem can be determined to be in the CAN communication, not the direct line (TACH). If you press the engine switch and the system controls the engine based on the engine speed sent via the direct line, the engine stops cranking. If you press the engine switch and the system controls the engine based on the engine speed sent via the direct line, the engine stops cranking. If the following conditions are met, the problem can be determined to be in both the CAN communication and the direct line (NE). After you press the engine switch, the engine cranking stops after 6 seconds. While pressing the engine switch, 30 seconds pass and the engine is still cranking.

Vehicle status when a problem is detected

Failsafe function when a problem is detected

If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle speed is not displayed, there is no effect on vehicle operations. (When the engine switch is turned on (IG), the problem is detected.)
If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle is running, you cannot start the engine. However, if you turn the engine switch off, you can start the engine.

If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle speed is not displayed, there is no effect on vehicle operations.
If a problem is found in the signal via the direct line or the CAN communication, and if the vehicle is running:
- If the following conditions are met, the problem can be determined to be in the direct line (TACH), not the CAN communication.
  - If you press the engine switch and the system controls the engine based on the starter OFF permission flag (perfect injection signal decision) via the CAN communication, the engine stops cranking.
  - If you press the engine switch and the system controls the engine based on the engine speed via the CAN communication, the engine stops cranking.
- If the following conditions are met, the problem can be determined to be in the CAN communication, not the direct line (TACH).
  - If you press the engine switch and the system controls the engine based on the engine speed sent via the direct line, the engine stops cranking.
  - If you press the engine switch and the system controls the engine based on the engine speed sent via the direct line, the engine stops cranking.
- If the following conditions are met, the problem can be determined to be in both the CAN communication and the direct line (NE).
  - After you press the engine switch, the engine cranking stops after 6 seconds.
  - While pressing the engine switch, 30 seconds pass and the engine is still cranking.

Related [Current Data Display & Save] and [System Operation Check Mode] items

DTC DESCRIPTION

DTC No.	[Current Data Display & Save] items	[System Operation Check Mode] items
B2286	Power supply [Engine Speed] Engine [Engine Speed]	-

DTC No.

[Current Data Display & Save] items

[System Operation Check Mode] items

B2286

Power supply

[Engine Speed]

Engine

[Engine Speed]