Inspect Ignition Coil

Measure the primary coil resistance between terminals 1, 2 and 1, 3.

Fig 1: Measuring Primary Coil Resistance
Courtesy of KIA MOTORS AMERICA, INC.

Standard value: 0.58 Ω +/-10%
Measure the secondary coil resistance between the high-voltage terminals for the No. 1 and No. 4 cylinders, and between the high voltage terminals for the No. 2 and No. 3 cylinders.
Standard value: 8.8 kΩ +/-15%

CAUTION: Be sure, when measuring the resistance of the secondary coil, to disconnect the connector of the ignition coil.

Fig 2: Measuring Secondary Coil Resistance
Courtesy of KIA MOTORS AMERICA, INC.