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Home >> Toyota >> 1996 >> Supra 3.0 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - Turbo >> Ignition Checks (DISTRIBUTORLESS Ignition System) >> Ignition Coil Resistance

Ignition Coil Resistance

  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, check 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 resistance is not within specification. See IGNITION COIL RESISTANCE  table.
  5. Ignition coil secondary resistance cannot be checked. Reinstall electrical connectors on ignition coils, timing belt cover, gasket and negative battery cable.
IGNITION COIL RESISTANCE

Application Primary Secondary
Cold (1) .54-.84 (3)
Hot (2) .68-.98 (3)
(1) Cold is with temperature of 14-122°F (-10-50°C).
(2) Hot is with temperature of 122-212°F (50-100°C).
(3) Secondary ignition coil resistance cannot be checked.
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