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Home >> Kia >> 2016 >> Rio LX, 4D Hatchback, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P050B: Cold Start Ignition Timing Performance >> Component Inspection

Component Inspection

■ Check Ignition Coil 

  1. IG "OFF" and disconnect ignition coil connector.
  2. Measure resistance between power and signal terminals of ignition coil connector. (Measurement "A")
  3. Measure resistance between power terminal of ignition coil connector and out terminal of secondary ignition coil. (Measurement "B")

    Specification: 

    Resistance Primary Coil Secondary Coil
    0.75Ω ± 15% (20°C/68°F) 7.0 kΩ ± 15% (20°C/68°F)
    Fig 1: Measuring Resistance Between Power And Signal Terminals Of Ignition Coil Connector
    G11847697Courtesy of KIA MOTORS AMERICA, INC.
  4. Is the measured resistance within specification?

    YES 

    • Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Substitute with a known - good Ignition Coil and check for proper operation. If the problem is corrected, replace Ignition Coil and go to "VERIFICATION OF VEHICLE REPAIR " procedure.