Connect scantool to Data Link Connector(DLC)

IG key "ON", Engine "ON".

Warm up the engine to normal operating temperature.

Monitor diagnostic trouble code and present of trouble code.

Are any DTCs present ?

Using a scantool, Check if the same DTC re-sets after clearing DTC.

Is the same DTC detected again?

	▶ Substitute with a known-good "LKAS ECU" and check for proper operation. If the problem is corrected, replace "LKAS ECU" and then go to "Verification of Vehicle Repair" procedure.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.