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2.2L & 2.5L

  1. Disconnect 4-pin connector from ignition coil and ignitor assembly. Using an ohmmeter, check primary resistance between terminals No. 1 and No. 2 for one coil. Check primary resistance between terminals No. 2 and No. 4 for remaining coil. Resistance should be as specified. See Fig 1 and IGNITION COIL RESISTANCE - OHMS @ 68°F (20°C)  table. If resistance is not as specified for each coil, replace ignition coil assembly.
  2. To test secondary resistance, connect ohmmeter between ignition coil secondary terminals No. 1 and No. 2, and terminals No. 3 and No. 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 (2.2L & 2.5L)
G00013039Courtesy of SUBARU OF AMERICA, INC.
Fig 2: Testing Ignition Coil Secondary Resistance (2.2L & 2.5L)
G00013040Courtesy of SUBARU OF AMERICA, INC.
IGNITION COIL RESISTANCE - OHMS @ 68°F (20°C)

Application (1) Primary (2) Secondary
2.2L & 2.5L .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 .