Connect GDS to Data Link Connector(DLC).

IG key "ON", Engine "ON".

Monitor diagnostic trouble code and present of trouble code.

Are any DTCs present ?

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

Is the same DTC detected again?

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