ENTRY AND START SYSTEM, Diagnostic DTC:B2281

DTC Code DTC Name
B2281 "P" Signal Malfunction

DESCRIPTION

This DTC B2281 is output when there is an abnormal circuit between the main body ECU and the shift lock control ECU.

DTC Code Detection Condition Trouble Area
B2281 Communication or communication line is abnormal between main body ECU and shift lock control ECU

  • Main body ECU

  • Shift lock control ECU

  • Harness or connector

WIRING DIAGRAM

A001AUUE01
*a Main Body ECU
*b Shift Lock Control ECU

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SHIFT LOCK CONTROL ECU)

    A001FGDE03
    *1 Front view of wire harness connector: (to Main Body ECU)
    *2 Front view of wire harness connector: (to Shift Lock Control ECU)

    1. Disconnect the A68 main body ECU connector.

    2. Disconnect the L47 shift lock control ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A68-2 (P) - L47-11 (P2) Always Below 1 Ω
      A68-2 (P) or L47-11 (P2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK SHIFT LOCK CONTROL ECU (OPERATION)


    1. Temporarily replace the shift lock control ECU with a new or normally functioning one.

    2. Check that the engine starts normally.

      OK
      Engine starts normally.

    OK

    END (SHIFT LOCK CONTROL ECU IS FAULTY)

    NG

    REPLACE MAIN BODY ECU