Dtc B2287 Lin Communication Master Malfunction

Power Source Network. Corolla. Zre142 Aze141
Networking. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

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

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

CHECK FOR DTC

DTC B2287 LIN Communication Master Malfunction


DESCRIPTION

This DTC is output when there is an open, short or ECU communication malfunction between the main body ECU (instrument panel junction block) 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 the main body ECU (instrument panel junction block) and certification ECU (smart key ECU assembly).
  1. Certification ECU (smart key ECU assembly)
  2. Main body ECU (instrument panel junction block)
  3. Wire harness or connector

WIRING DIAGRAM


Corolla. Zre142 Aze141.Networking.Lin Communication System. Dtc B2287 Lin Communication Master Malfunction


INSPECTION PROCEDURE

HINT:
When DTC B2785 and B2287 are output simultaneously, perform the troubleshooting for DTC B2785 first.
NOTICE:
If the certification ECU (smart key ECU assembly) is replaced, register the keys and ECU communication ID (COROLLA_ZRE142 RM000000QYF05AX.html).
1.CLEAR DTC

  1. Clear the DTC (COROLLA_ZRE142 RM000002XHS04WX.html).


NEXT


2.CHECK FOR DTC

  1. Recheck for the DTC (COROLLA_ZRE142 RM000002XHS04WX.html).

    OK:
    B2287 is not output.


NG
Go to step 3
OK

USE SIMULATION METHOD TO CHECK (COROLLA_ZRE142 RM000000UZ108OX.html)

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


    Corolla. Zre142 Aze141.Networking.Lin Communication System. Dtc B2287 Lin Communication Master Malfunction

  1. Disconnect the E36 and 2C connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E36-10 (LIN) - 2C-12 (LIN1)
    		Always
    		Below 1 Ω
    E36-10 (LIN) - Body ground
    		Always
    		10 kΩ or higher
    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E36-10 (LIN) - Body ground
    		Always
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  1. Replace the main body ECU (instrument panel junction block).


NEXT


5.CHECK FOR DTC

  1. Clear the DTC (COROLLA_ZRE142 RM000002XHS04WX.html).

  1. Recheck for the DTC.

    OK:
    B2287 is not output.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (COROLLA_ZRE142 RM000003G0O004X.html)
OK

END (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) IS DEFECTIVE)