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Expert
65 Answers
- Posted on Oct 07, 2009
Re: How do you check a dis coil (three coils on Ignition...
3.1L Engine
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Tag and disconnect the two plug wires attached to the suspected coil.
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Remove the two screws securing the ignition coil to the Ignition Control Module (ICM).
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Remove the ignition coil.
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Before testing, visually inspect the coil for carbon paths or cracks which will contribute to weak spark symptoms.
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Using an ohmmeter, check the resistance between the primary
terminals on the underside of the coil. The resistance should be
0.50-0.90 ohms.
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Check the resistance between the secondary terminals. It should be 5,000-8,000 ohms.
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If the coil failed either test, it must be replaced.
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