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Home >> Subaru >> 2017 >> BRZ Limited, Standard Trans >> Repair and Diagnosis >> Electrical >> Starter >> Entry Start System Start System (Keyless Start) >> Entry & start system (start function) >> DTC B2286 Run able Signal (Cable-Information does not match to BEAN-Information) >> Circuit description
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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 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 ASSY)
  • 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 FAIL-SAFE DESCRIPTION

Vehicle status when a problem is detected Fail-safe 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.
DATA MONITOR AND ACTIVE TEST DESCRIPTION

DTC No. [Data monitor] item [Active Test] item
B2286 Power supply
  • [Engine Speed] Engine
  • [Engine Speed]
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