Connect the scan tool to the data link connector(DLC) and start the engine.
Fix the injector boost operating voltage and the fuel quantity current data and check.
ARE THERE THE CURRENT DATA INDICATED WITHOUT ROUGH IDLING PROPERLY ?
YES
Make sure there is no the DTC in the diagnostic trouble codes menu
NO
Recheck the wiring harness
Recheck the injector
Go to step 3
MONITORING FOR PENDING DTC SET ?
YES
Go to the applicable troubleshooting procedure.
NO
System OK