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Ignition Coil Resistance (Turbo): Turbo

  1. Disconnect negative battery cable. Remove oil filler cap. Remove timing belt cover and gasket, located above ignition coils on top of cylinder head.
  2. Remove PCV hoses. Disconnect engine wiring clamps on ignition coils. Disconnect electrical connectors from ignition coils.
  3. Using ohmmeter, measure ignition coil primary resistance between positive (+) and negative (-) terminals of each ignition coil. These are the terminals that electrical connector was installed on.
  4. Replace ignition coil if ignition coil primary resistance is not .54-.84 ohms at 14-122°F (-10-50°C) and .68-.98 ohms at 122-212°F (50-100°C).
  5. Ignition coil secondary resistance cannot be measured. Reinstall electrical connectors on ignition coils, timing belt cover, gasket and negative battery cable.
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