Except Optima & Magentis (Canadian)

To check primary coil resistance, disconnect ignition coil connector. Using ohmmeter, check primary resistance between positive (+) and negative (-) terminal of coil or coil pack. Check secondary resistance between coil towers. See IGNITION COIL RESISTANCE table. If readings are not within specification, replace ignition coil(s). See Fig 1 and Fig 2 .

IGNITION COIL RESISTANCE

Application

⁽¹⁾ Ohms

Except Optima & Magentis (Canadian) & Rio

Primary

.45-.55

Secondary

13,000-15,000

Optima & Magentis (Canadian)

2.4L

Primary

.78

Secondary

20,000

2.5L

Primary

.67-.81

Secondary

11,400-15,200

Rio

Primary

.6-.8

Secondary

11,000-15,000

⁽¹⁾	At 68°F (20°C).

Fig 1: Checking Primary & Secondary Coil Resistance (Rio)

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Checking Secondary Coil Resistance (Sephia, Spectra & Sportage)

Courtesy of KIA MOTORS AMERICA, INC.