DTC    B2287    LIN Communication Master Malfunction

for Preparation Click here


DESCRIPTION

This DTC is stored when there is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).

DTC No.
DTC Detection Condition
Trouble Area
B2287
There is an open, short or ECU communication malfunction between power management control ECU and certification ECU (smart key ECU assembly).
  1. Power management control ECU
  2. Certification ECU (smart key ECU assembly)
  3. Wire harness or connector

WIRING DIAGRAM


B203745E30


INSPECTION PROCEDURE

NOTICE:
  1. If the certification ECU (smart key ECU assembly) is replaced, register the key.
  2. When using the intelligent tester to troubleshoot with the power switch off:
    Connect the intelligent tester to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the intelligent tester and vehicle begins.

1.CHECK DTC OUTPUT

  1. Clear the DTC (Click here).

  1. Recheck for DTCs.

    HINT:
    Check the both "Entry&Start" and "Power Source Control" DTCs.

    Result:
    Result
    		Proceed to
    Only DTC B2287 is output.
    		A
    DTC B2287 and B2785 are output simultaneously.
    		B

    HINT:
    When DTC B2287 and B2785 are output simultaneously, perform troubleshooting for DTC B2785 first.



B
GO TO DTC B2785 (Click here)
A


2.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - POWER MANAGEMENT CONTROL ECU)

  1. Disconnect the H4 power management control ECU and H1*1 or H143*2 certification ECU (smart key ECU assembly) connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H4-11 (LIN2) - H1-29 (LIN)*1
    H4-11 (LIN2) - H143-29 (LIN)*2
    		Always
    		Below 1 Ω
    H4-11 (LIN2) - Body ground
    		Always
    		10 kΩ or higher

    1. *1: w/ Entry Function
    2. *2: w/o Entry Function



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.REPLACE POWER MANAGEMENT CONTROL ECU

  1. Replace the power management control ECU (Click here).


NEXT


4.CHECK DTC OUTPUT

  1. Clear the DTC (Click here).

  1. Recheck for DTCs.

    OK:
    DTC B2287 is not output.



NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE)