Injector Performance Inspection

Ignition "OFF".
Connect VMI to KDS/GDS and select "Oscilloscope".
Connect Channel A positive probe to Pin No. 2 (High Side) and Channel A negative probe to Pin No. 1 (Low Side).
Connect CH AUX probe to injector control wire.
Warm up the engine to normal operating temperature.
Specification: Refer to Signal Waveform & Data below

Fig 1: Scantool Display - Signal Waveform & Data (Engine Idle After Warm-Up)
Courtesy of KIA MOTORS AMERICA, INC.

A: Fuel injection time - Approx. 1450us

CH. A - Injector MAX voltage 64.5V

CH. AUX - Injector MAX current 9.21A

Fig 2: Scantool Display - Signal Waveform & Data (Approx 2500RPM)
Courtesy of KIA MOTORS AMERICA, INC.

A: Fuel injection time - Approx. 900us

CH. A - Injector MAX voltage 64.9V

CH. AUX - Injector MAX current 9.15A

Fig 3: Scantool Display - Signal Waveform & Data (During Acceleration)
Courtesy of KIA MOTORS AMERICA, INC.

CH. A - Injector MAX voltage 65.2V

CH. AUX - Injector MAX current 9.09A

Ignition "OFF".
Disconnect cylinder #1 Injector connector.
Measure resistance between Pin No. 2 (High Side) terminal and Pin No. 1 (Low Side) terminal of the injector (component side).
Specification: Approx. 1.40 Ω [25°C (77°F)]

Fig 1: Scantool Display - Injector Resistance
Courtesy of KIA MOTORS AMERICA, INC.