Ignition Coil Resistance

WARNING: This page is about a different car, the 1996 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

Remove necessary components and disconnect electrical connector from ignition coil. Disconnect spark plug wire from ignition coil.
Using ohmmeter, check ignition coil primary resistance between ignition coil positive (+) and negative (-) terminals. These are the terminals that electrical connector was installed on. See Fig 1 and Fig 2. Replace ignition coil if primary resistance is not within specification. See IGNITION SYSTEM IGNITION COIL RESISTANCE table.
Using ohmmeter, check ignition coil secondary resistance. See Fig 1 and Fig 2. Replace ignition coil if secondary resistance is not within specification. See IGNITION SYSTEM IGNITION COIL RESISTANCE table. Reinstall connector on ignition coil.

IGNITION SYSTEM IGNITION COIL RESISTANCE

Application

Primary

Secondary

Cold ⁽¹⁾

.70-.94

10,800-14,900

Hot ⁽²⁾

.85-1.10

13,100-17,500

⁽¹⁾	Cold is with temperature of 14-122°F (-10-50°C).

⁽²⁾	Hot is with temperature of 122-212°F (50-100°C).

Fig 1: Measuring Ignition System Ignition Coil Resistance - Primary

Fig 2: Measuring Ignition System Ignition Coil Resistance - Secondary