ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2281

DTC Code DTC Name
B2281 "P" Signal Malfunction

DESCRIPTION

This DTC is stored 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 the communication line is abnormal between the main body ECU and shift lock control ECU.

  • Main body ECU

  • Shift lock control ECU

  • Harness or connector

WIRING DIAGRAM

A0157BFE03

INSPECTION PROCEDURE

PROCEDURE


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


    1. Use the Data List to check if the shift position signal 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 the intelligent tester does not change according to shift lever operation A
      Display on the intelligent tester changes according to shift lever operation B

    B

    REPLACE MAIN BODY ECU

    A

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

    A015AAKE02

    1. Disconnect the E4 main body ECU connector.

    2. Disconnect the E51 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
      E4-2 (P) - E51-11 (P2) Always Below 1 Ω
      E51-3 (E) - Body ground Always Below 1 Ω
      E4-2 (P) or E51-11 (P2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT SHIFT LOCK CONTROL ECU


    1. A0156GWE05
      A0158UDE01

      Check the signal waveform according to the condition(s) in the table below.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      E51-11 (P2) - E51-3 (E) 2 V/DIV., 20 msec./DIV. Shift lever in P
      OK
      The waveform is similar to that shown in the illustration.
      Result
      Result Proceed to
      OK A
      NG for 1GR-FE B
      for 1VD-FTV, 3UR-FE, 1UR-FE C

    B

    REPLACE SHIFT LOCK CONTROL ECU Click here

    C

    REPLACE SHIFT LOCK CONTROL ECU Click here

    A

    REPLACE MAIN BODY ECU