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Ignition Coil Resistance

  1. Disconnect wiring from ignition coil so ignition coil is isolated from system. Using ohmmeter, check primary resistance between ignition coil positive (+) and negative (-) terminals. See Fig 1 and Fig 2.
  2. Check secondary resistance between ignition coil positive (+) terminal and high tension terminal (coil wire tower). See Fig 3 and Fig 4. Replace ignition coil if resistance is not within specification. See appropriate IGNITION COIL RESISTANCE  table.
IGNITION COIL RESISTANCE

Application Primary Secondary
1.8L (7A-FE) 1.11-1.75 9000-15,700
2.2L (5S-FE) .36-.55 9000-15,400
Fig 1: Checking Ignition Coil Primary Resistance (1.8L)
G94J44577Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Checking Ignition Coil Primary Resistance (2.2L CA)
G94A44578Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Checking Ignition Coil Secondary Resistance (1.8L)
G94J44585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Checking Ignition Coil Secondary Resistance (2.2L CA)
G94A44586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002