Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSKIA2015SOUL BASE, AUTOMATIC TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 2) - 1.6LDTC P0272: CYLINDER 4 CONTRIBUTION/BALANCECOMPONENT INSPECTIONNOTES

2015 Kia Soul Base, Automatic Trans

Component Inspection: Notes

2015 Kia Soul Base, Automatic TransSECTION Notes

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.
  
  Fuel injection time - Approx. 1545us
  
  CH. A - Injector Max 64.4V
  
  CH. AUX - Injector Current MAX 9.09A
  
  Fig 3: Fuel Injector Waveforms - 2500 RPM
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fuel injection time - Approx. 900us
  
  CH. A - Injector Max 64.4V
  
  CH. AUX - Injector Current MAX 9.09A
  
  Fig 4: Fuel Injector Waveforms - Acceleration
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fuel injection time - Approx. 3360us
  
  CH. A - Injector Max 65.2V
  
  H. 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.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.