Injector Inspection

■ Perform Injector Actuation Test 

1. Connect GDS to Data Link Connector (DLC).
2. IG KEY "ON" & ENG "OFF".
3. Perform "Actuation Test" for "GDI Injector-Cylinder #1, 2, 3, 4, 5, 6".

■ Check Injector Performance 

1. IG KEY "OFF".
2. Connect VMI to GDS and select "Oscilloscope".
3. Connect Channel A positive probe to Pin No. 2 (High side) and Channel A negative probe to Pin No. 1 (Low side).
4. Connect CH AUX probe to control wire of Injector.
5. Warm up the engine to normal operating temperature.

   Specification:  Refer to SIGNAL WAVEFORM & DATA 

   Fig 1: Scantool Display - Signal Waveform And Data (Engine Idle After Warm Up)

   Courtesy of KIA MOTORS AMERICA, INC.

   A: Fuel injection time - Approx 1110us

   CH. A - Injector Max 48.8V

   CH. AUX - Injector Current MAX 11.7A

   Fig 2: Scantool Display - Signal Waveform And Data (At Acceleration)

   Courtesy of KIA MOTORS AMERICA, INC.

   Fuel injection time - Approx. 2910us

   CH. A - Injector Max 49.3V

   CH. AUX - Injector Current MAX 11.8A

■ Check Injector Performance 

1. IG Key "OFF".
2. Disconnect Injector connector.
3. Measure resistance between Pin No. 2 (High side) terminal and Pin No. 1 (Low side) terminal of the Injector. (Component Side)

   Specification:  Approx. 1.80Ω [20°C (68°F)]

   Fig 3: Scantool Display - Resistance Of Injector

   Courtesy of KIA MOTORS AMERICA, INC.

■ Confirm Part Inspection 

1. Does the Injector operate properly? (Check Variation)

   YES 

   • Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Carefully redo this troubleshooting guide steps.
   • If no problems were found with the circuits or connectors, replace the injector and go to "VERIFICATION OF VEHICLE REPAIR " procedure.