SMART ENTRY AND START SYSTEM, Diagnostic DTC:B2281

DTC Code DTC Name
B2281 "P" Signal Malfunction

DESCRIPTION

The ECM and the shift lock control ECU are connected by a cable and the CAN. If the cable information and CAN information are inconsistent, this DTC will be output.

Tech Tips

After the main body ECU is replaced, perform the registration procedure for the engine immobiliser system.

DTC No. DTC Detection Condition Trouble Area
B2281 Cable information and CAN information between main body ECU and shift lock control ECU are inconsistent

  • Main body ECU (Instrument panel junction block)

  • Shift lock control ECU

  • Wire harness or connector

WIRING DIAGRAM

A017D7OE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG) and turn the intelligent tester main switch on.

    3. Read the DATA LIST according to the displays on the tester.

      Body:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      SHIFT P SIG Shift P Signal / ON or OFF

      ON: Shift P signal ON (Shift position is P)

      OFF: Shift P signal OFF (Shift position is not P)

      		 -
      OK
      "ON" (P signal is ON) and "OFF" (P signal is OFF) appear on the screen.

    NG

    GO TO SHIFT CONTROL SYSTEM Click here

    OK

  2. CHECK WIRE HARNESS (MAIN BODY ECU - SHIFT LOCK CONTROL ECU)


    1. Disconnect the D9 and D18 ECU connectors.

      A017B4IE08

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

      Standard resistance
      Terminal No. (Symbol) Condition Specified Condition
      D9-2 (P) - D18-11 (P2) Always Below 1 Ω
      D9-2 (P) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MAIN BODY ECU OPERATION


    1. After replacing the main body ECU with a normally functioning one, check that the engine can start normally.

      OK
      Engine can start normally.

    NG

    REPLACE SHIFT LOCK CONTROL ECU Click here

    OK

    END (MAIN BODY ECU DEFECTIVE)