Ignition Coil Resistance

Disconnect wiring from ignition coil so ignition coil is isolated from system. Using ohmmeter, measure primary resistance between ignition coil positive (+) and negative (-) terminals. See Fig 1 or Fig 2.

Fig 1: Checking Ignition Coil Primary Resistance (MR2 Non-Turbo)
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Fig 2: Checking Ignition Coil Primary Resistance (MR2 Turbo)
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Check secondary resistance between ignition coil positive (+) terminal and high tension wire terminal (coil wire tower). See Fig 3 or Fig 4. Replace ignition coil if resistance is not within specification. See appropriate IGNITION COIL RESISTANCE table.

Fig 3: Checking Ignition Coil Secondary Resistance (MR2 Non-Turbo)

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Fig 4: Checking Ignition Coil Secondary Resistance (MR2 Turbo)

IGNITION COIL RESISTANCE (4-CYLINDER) - Ohms @ 68°F (20°C)

Application	Primary	Secondary
MR2	.36-.55	9000-15,400