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. Connnect 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: Screen Display - Signal Waveform In Current Data At Engine Idle After Warm Up

   Courtesy of KIA MOTORS AMERICA, INC.
   Fig 2: Screen Display - Signal Waveform In Current Data At Acceleration

   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

   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. 1.80 Ω [20°C(68°F)]

   Fig 3: Screen 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 re-do 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.