Component Inspection

■ Perform Injector Actuation Test 

1. Connect KDS/GDS to Data Link Connector (DLC).
2. Ignition "ON" & Engine "OFF".
3. Perform "Actuation Test  " for Injector.
   Fig 1: Scantool Display - Injector Disable (Cylinder 1 Actuation Test)

   Courtesy of KIA MOTORS AMERICA, INC.

■ Injector Performance Inspection 

1. Injector "OFF".
2. Connect VMI to KDS/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 below

   Fig 2: 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 64.5V

   CH. AUX - Injector Current MAX 9.21A

   Fig 3: Scantool Display - Signal Waveform & Data (Approx 2500RPM)

   Courtesy of KIA MOTORS AMERICA, INC.

   A: Fuel injection time - Approx. 900us

   CH. A - Injector MAX 64.9V

   CH. AUX - Injector Current MAX 9.15A

   Fig 4: Scantool Display - Signal Waveform & Data (During Acceleration)

   Courtesy of KIA MOTORS AMERICA, INC.

   CH. A - Injector MAX 65.2V

   CH. AUX - Injector Current MAX 9.09A

■ Injector Inspection 

1. Ignition "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. 1.40Ω [25°C (77°F)]

   Fig 5: Scantool Display - Injector Resistance

   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 problem still occurs, replace Injector and then go to "System Inspection" procedure.