System Inspection

System Inspection

1. Was the ECM just replaced or reflashed ?
YES
1) Using a scan tool, perform "VIN WRITING" procedure. Refer to the latest Reference manual for scan tool and go to "Verification of Vehicle Repair" procedure
NO
1) Using a scan tool, read VIN information.
If there is no proper VIN information, perform "VIN WRITING" procedure.
If VIN information exists, substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM.
And go to "Verification of Vehicle Repair" procedure.