Ignition Coil Resistance

Disconnect 4-pin connector from ignition coil and ignitor assembly. Using an ohmmeter, check primary resistance between terminals No. 1 and 2 for one coil. Check primary resistance between terminals No. 2 and 4 for remaining coil. Resistance should be as specified. See Fig 1. IGNITION COIL RESISTANCE - OHMS @ 68°F (20°C) table. If resistance is not as specified for each coil, replace ignition coil assembly.
To test secondary resistance, connect ohmmeter between ignition coil secondary terminals No. 1 and 2, and terminals No. 3 and 4. See Fig 2. If resistance of each coil is not as specified, replace ignition coil assembly. See IGNITION COIL RESISTANCE - OHMS @ 68°F (20°C) table.

Fig 1: Testing Ignition Coil Primary Resistance

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Testing Ignition Coil Secondary Resistance

Courtesy of SUBARU OF AMERICA, INC.

IGNITION COIL RESISTANCE - OHMS @ 68°F (20°C)

Application

⁽¹⁾ Primary

⁽²⁾ Secondary

All Models

.66-.80

10,880-14,720

⁽¹⁾	Checked between ignition coil and ignitor assembly connector terminals No. 1 and No. 2 and terminals No. 2 and No. 4. See Fig 1.

⁽²⁾	Checked between ignition coil secondary terminals for cylinders No. 1 and No. 2, and cylinders No. 3 and No. 4. See Fig 2.