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.
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HOMESERVICE MANUALSSUBARU2007FORESTER F4-2.5L DOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULETESTING AND INSPECTION
2007 Subaru Forester F4-2.5L DOHC Turbo
Ignition Control Module: Testing and Inspection
2007 Subaru Forester F4-2.5L DOHC TurboSECTION Testing and Inspection
Ignition Coil and Ignitor Assembly
INSPECTION
Using the accurate tester, inspect the following items, and replace if defective.
1. Primary resistance
2. Secondary coil resistance
CAUTION: If the resistance is extremely low, this indicates the presence of a short-circuit.
Specified resistance:
[Primary side]
Between terminal No. 2 and No. 4 0.73 Ohm ± 10%
Between terminal No. 1 and No. 2 0.73 Ohm ± 10%
[Secondary side]
Between (A) and (B) 12.8 kOhm ± 15%
Between (C) and (D) 12.8 kOhm ± 15%
3. Insulation between primary terminal and case: 100 MOhm or more.
INSPECTION
Using the accurate tester, inspect the following items, and replace if defective.
1. Primary resistance
2. Secondary coil resistance
CAUTION: If the resistance is extremely low, this indicates the presence of a short-circuit.
Specified resistance:
[Primary side]
Between terminal No. 2 and No. 4 0.73 Ohm ± 10%
Between terminal No. 1 and No. 2 0.73 Ohm ± 10%
[Secondary side]
Between (A) and (B) 12.8 kOhm ± 15%
Between (C) and (D) 12.8 kOhm ± 15%
3. Insulation between primary terminal and case: 100 MOhm or more.
RENDER: 1.0x
NO RELATED
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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.