Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2002 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Ignition Coil

NOTE: Ignition coil resistance is not measurable on Outback 3.0L. If vehicle does not start or ignition system failure is suspect, see BASIC DIAGNOSTIC PROCEDURES article.

IGNITION COIL RESISTANCE

Application

⁽¹⁾ Primary

⁽²⁾ Secondary

2.0L & 2.5L

0.73 Ohms ± 10%

12.8 k/Ohms ± 15%

⁽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⁾	Check between ignition coil secondary terminals A and B, and terminals C and D. See Fig 2.

Fig 1: Identifying Primary Ignition Coil Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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