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 MANUALSKIA2014FORTE5 EXREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 2) - 2.0LDTC U1112: LIN COMMUNICATION ERRORWIRING INSPECTIONSIGNAL CIRCUIT INSPECTION

2014 Kia Forte5 EX

Signal Circuit Inspection

2014 Kia Forte5 EXSECTION Signal Circuit Inspection

Check open in harness
1. IG "OFF" and disconnect battery sensor and ECM/PCM connector.
2. Check resistance between LIN terminal of battery sensor harness Connector and ECM/PCM harness connector.
  Specification: Below 1.0Ω
3. Is the measured resistance within specification?
  YES
  - Go to "CHECK SHORT TO BATTERY IN HARNESS " as follows.
  NO
  - Repair open in harnesses and go to "VERIFICATION OF VEHICLE REPAIR ".
CHECK SHORT TO BATTERY IN HARNESS
1. IG "OFF" and disconnect battery sensor and ECM/PCM connector.
2. IG "ON"
3. Measure the voltage between LIN terminal of battery sensor harness connector and chassis ground.
  Specification: Approx. 0V
4. Is the measured voltage within specification?
  YES
  - Go to "CHECK SHORT TO GROUND IN HARNESS " as follows.
  NO
  - Repair short to battery in harnesses and go to "VERIFICATION OF VEHICLE REPAIR ".
CHECK SHORT TO GROUND IN HARNESS
1. IG "OFF" and disconnect battery sensor and ECM/PCM connector.
2. Check resistance between LIN terminal of battery sensor harness Connector and chassis ground.
  Specification: Infinity
3. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " as follows.
  NO
  - Repair short to ground in harnesses and go to "VERIFICATION OF VEHICLE REPAIR ".

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.