Dtc B2281 P Signal Malfunction (Cable-Information Does Not Match To Bean-Information)

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fse Starting. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU)

CHECK POWER SOURCE CONTROL ECU

DTC B2281 "P" Signal Malfunction (Cable-Information does not Match to Bean-Information)


DESCRIPTION

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

DTC No.
DTC Detection Condition
Trouble Area
B2281
Cable and BEAN between power source control ECU and shift lock control ECU are inconsistent
  1. Power source control ECU
  1. Shift lock system
  1. Wire harness

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Starting.Starting System. Dtc B2281 P Signal Malfunction (Cable-Information Does Not Match To Bean-Information)


INSPECTION PROCEDURE

1.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU)


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Starting.Starting System. Dtc B2281 P Signal Malfunction (Cable-Information Does Not Match To Bean-Information)

  1. Disconnect the L73 ECU connector.

  1. Disconnect the L39 ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    L73-5 (P) - L39-11 (P2)
    		Below 1 Ω
    L73-5 (P) or L39-11 (P2) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


2.CHECK POWER SOURCE CONTROL ECU

  1. Temporarily replace the power source control ECU with a new or normally functioning one.

  1. Check that the engine starts normally.

    OK:
    Engine starts normally.


NG
GO TO SHIFT LOCK SYSTEM
OK

END (POWER SOURCE CONTROL ECU IS FAULTY)