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 MANUALSBMW2003Z4 3.0 3, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTINGIGNITION SYSTEMDIRECT IGNITION SYSTEMIGNITION COIL
2003 BMW Z4 3.0 3, Automatic
Ignition Coil
2003 BMW Z4 3.0 3, AutomaticSECTION Ignition Coil
Measure primary coil resistance between terminal No. 1 and terminal No. 15. See Fig 1. Secondary coil resistance cannot be measured. See IGNITION COIL RESISTANCE table.
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
| Primary | Secondary | ||
|---|---|---|---|
| .8 (1) | Not Measurable | ||
|
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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.