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

  • Transmission floor shift assembly (shift lock control ECU)

  • Harness or connector

WIRING DIAGRAM

A01H02SE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (SHIFT P SIGNAL)


    1. Use the Data List to check if the shift position is functioning properly.

      MAIN BODY
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shift P Signal Shift P position signal/ON or OFF

      ON: Shift lever in P

      OFF: Shift lever not in P

      		 -
      Result
      Result Proceed to
      Display on tester does not change according to shift lever operation A
      Display on tester changes according to shift lever operation B

    B

    REPLACE MAIN BODY ECU

    A

  2. INSPECT SHIFT LOCK CONTROL ECU

    A01H18CE01

    1. Disconnect the L47 shift lock control ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      11 (P2) - 3 (E) Shift lever not in P Below 1 Ω
      11 (P2) - 3 (E) Shift lever in P 10 kΩ or higher

    NG

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT LOCK CONTROL ECU) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SHIFT LOCK CONTROL ECU, BODY GROUND)

    A01H1PYE01

    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
      L47-3 (E) - Body ground 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

    REPLACE MAIN BODY ECU