Dtc B2287 Lin Communication Master Malfunction

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - MAIN BODY ECU)

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

CHECK FOR DTC

DTC B2287 LIN Communication Master Malfunction


DESCRIPTION

This DTC is stored there is an open, short or ECU communication malfunction between the main body ECU (cowl side junction block LH) and certification ECU (smart key ECU assembly).

DTC Code
DTC Detection Condition
Trouble Area
B2287
There is an open, short or ECU communication malfunction between the main body ECU (cowl side junction block LH) and certification ECU (smart key ECU assembly).
  1. Certification ECU (smart key ECU assembly)
  2. Main body ECU (cowl side junction block LH)
  3. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2287 Lin Communication Master Malfunction


INSPECTION PROCEDURE

NOTICE:
When using the intelligent tester with the ignition switch off to troubleshoot:
Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
HINT:
When DTC B2287 and B2785 are output simultaneously, perform the troubleshooting for DTC B2785 first (Click here).
1.CLEAR DTC

  1. Clear the DTC (Click here).


NEXT


2.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2287 is output
    		A
    DTC B2287 is not output
    		B


B
USE SIMULATION METHOD TO CHECK (Click here)
A


3.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - MAIN BODY ECU)

Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2287 Lin Communication Master Malfunction

  1. Disconnect the E29 and 2D ECU connectors.

  1. Measure the resistance and voltage according to the value(s) in the tables below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E29-10 (LIN) - 2D-20 (LIN1)
    		Always
    		Below 1 Ω
    E29-10 (LIN) or 2D-20 (LIN1) - Body ground
    		Always
    		10 kΩ or higher
    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E29-10 (LIN) or 2D-20 (LIN1) - Body ground
    		Always
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

  1. Temporarily replace the main body ECU (cowl side junction block LH) with a new or normally functioning one.

  1. Clear the DTC (Click here).


NEXT


5.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2287 is not output
    		A
    DTC B2287 is output
    		B


B
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
A

END (MAIN BODY ECU IS DEFECTIVE)