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Primary Coil Resistance Test

  1. Disconnect ignition coil so it is isolated from remainder of system. Using ohmmeter, measure resistance between coil positive (+) and negative (-) terminals. See Fig 1.
  2. If primary resistance is not within specification, replace ignition coil. See IGNITION COIL RESISTANCE table. If resistance is within specification, proceed to SECONDARY COIL RESISTANCE.
Fig 1: Testing Ignition Coil Primary Resistance - Land Cruiser
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