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Ignition Coil Resistance: Turbo

  1. Ignition coil secondary resistance cannot be checked. Only the ignition coil primary resistance may be checked. Disconnect negative battery cable. Remove oil filler cap. Remove timing belt cover and gasket located above ignition coils on top of cylinder head.
  2. Disconnect electrical connector from ignition coil. Using ohmmeter, check ignition coil primary resistance between positive (+) and negative (-) electrical terminals on ignition coil. See Fig 1.
  3. Replace ignition coil if ignition coil primary resistance is not within specification. See IGNITION COIL RESISTANCE  table. Reinstall electrical connector on ignition coil, timing belt cover, gasket and negative battery cable.
IGNITION COIL RESISTANCE - Ohms

Application Primary Secondary
Non-Turbo
Cold (1) .33-.52 8500-14,700
Hot (2) .42-.61 10,800-17,200
Turbo
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 measured.
Fig 1: Checking Ignition Coil Primary Resistance (Turbo)
G98E11233Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002