B2287

2AR-FE STARTING: SMART KEY SYSTEM: B2287: LIN Communication Master Malfunction
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 Engine Immobiliser System (W/ Smart Key System).









WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTCS

(a) Delete the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTC B2287 and B2785.

Result:





C -- CHECK INTERMITTENT PROBLEMS

B -- REPLACE CERTIFICATION ECU
A -- Continue to next step.

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

(a) Disconnect the E58 and IR ECU connectors.





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

Standard resistance:





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

3. CHECK MAIN BODY ECU OPERATION

(a) After replacing the main body ECU with a normally functioning ECU, check that the engine starts Initial Inspection and Diagnostic Overview.

OK:

Engine can start normally.

NG -- REPLACE CERTIFICATION ECU

OK -- END (MAIN BODY ECU DEFECTIVE)