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Home >> Toyota >> 1994 >> Supra 2JZ-GE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks (Turbo) >> Ignition Coil Resistance
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Ignition Coil Resistance

  1. Disconnect negative battery cable. Remove oil filler cap. Remove timing belt cover and gasket, located above ignition coils. See Figure.
  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 primary coil resistance is not .54-.84 ohms at 14-122°F (-10-50°C). The 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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