Check Injector Performance

Ignition "OFF".
Connect VMI to KDS/GDS and select "Oscilloscope".
Ignition "ON", Engine "ON""
Measure signal waveform between Pin No. 3 (High) terminal of Injector #6 Joint (CC23) connector and chassis ground with VMI.
Measure signal waveform between Pin No. 8 (Low) terminal of Injector #6 Joint (CC23) connector and chassis ground with VMI.
Specification: Refer to Fig 1

Fig 1: Scantool Display - Normal Waveforms Of Injector At Engine Idle
Courtesy of KIA MOTORS AMERICA, INC.
Does the Injector operate properly? (Check variation)
YES
- Go to "Verification Of REPAIR " procedure.
NO
- Carefully re-do this troubleshooting guide steps.
- If no problems were found with the circuits or connectors, replace the Injector #6 and go to "Verification Of REPAIR " procedure.