LIN Communication System

NETWORKING: LIN COMMUNICATION SYSTEM: B2287: LIN Communication Master Malfunction
B2287 - LIN Communication Master Malfunction

DESCRIPTION

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





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* If the certification ECU (smart key ECU assembly) is replaced, register the key Engine Immobilizer System.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC LIN Communication System.

(b) Recheck for DTC.

OK:

B2287 is not output.

NG -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - POWER SOURCE CONTROL ECU)

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

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

(a) Disconnect the P33 and J55 connectors.





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

Standard Resistance:





Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. REPLACE POWER SOURCE CONTROL ECU

(a) Replace the power source control ECU.

NEXT -- Continue to next step.

4. CHECK FOR DTC

(a) Clear the DTC LIN Communication System.

(b) Recheck for DTC.

OK:

B2287 is not output.

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

OK -- END (POWER SOURCE CONTROL ECU IS DEFECTIVE)