Dtc B2287 Lin Communication Master Malfunction

Engine. Camry. Acv40 Gsv40
2Gr-Fe Starting. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTCS

CHECK WIRE HARNESS (MAIN BODY ECU - CERTIFICATION ECU)

CHECK MAIN BODY ECU OPERATION

DTC B2287 LIN Communication Master Malfunction


DESCRIPTION

This DTC is output when there is a LIN communication problem between the main body ECU and certification ECU.
HINT:
When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
After the main body ECU or certification ECU is replaced, perform the registration procedures for the engine immobiliser system.

DTC No.
DTC Detection Condition
Trouble Area
B2287
Communication or communication line is abnormal between the main body ECU and the certification ECU
  1. Main body ECU
  2. Certification ECU
  3. Wire harness or connector

Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System. Dtc B2287 Lin Communication Master Malfunction


WIRING DIAGRAM


Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System. Dtc B2287 Lin Communication Master Malfunction


INSPECTION PROCEDURE

1.CHECK FOR DTCS

  1. Clear the DTCs (CAMRY_ACV40 RM000000YEH05QX.html).

  1. Check for DTC B2287 and B2785.

    Result:
    Display (DTC output)
    		Proceed to
    "DTC B2287" and "DTC B2785"
    		A
    "DTC B2287" only
    		B
    No DTC
    		C


B
REPLACE CERTIFICATION ECU

C
USE SIMULATION METHOD TO CHECK (CAMRY_ACV40 RM000000UZ104DX.html)
A


2.CHECK WIRE HARNESS (MAIN BODY ECU - CERTIFICATION ECU)


  1. Disconnect the E74 and IR ECU connectors.


    Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System. Dtc B2287 Lin Communication Master Malfunction

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    IR-9 (LIN1) - E74-10 (LIN)
    		Always
    		Below 1 Ω
    IR-9 (LIN1) or E74-10 (LIN) - 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 ECU, check that the engine starts (CAMRY_ACV40 RM000000YL103IX.html).

    OK:
    Engine can start normally.


NG
REPLACE CERTIFICATION ECU
OK

END (MAIN BODY ECU WAS DEFECTIVE)