Component Inspection

Perform Injector Actuation Test
1. Connect GDS to Data Link Connector (DLC).
2. IG KEY "ON" & ENG "OFF".
3. Perform "Actuation Test" for Injector.
  
  Fig 1: Injector Disable - Cylinder 1 Actuation Test Screen
  Courtesy of KIA MOTORS AMERICA, INC.
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 2: Fuel Injector Waveforms - 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: Fuel Injector Waveforms - 2500 RPM
  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: Fuel Injector Waveforms - Acceleration
  Courtesy of KIA MOTORS AMERICA, INC.
  
  CH. A - Injector Max 65.2V
  
  CH. AUX - Injector Current MAX 9.09A
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. 1.40 Ω [25°C (77°F)]
  
  Fig 5: 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 problem still occurs, replace Injector and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.