Ignition Coil Resistance
- 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.
- Check secondary resistance between ignition coil positive (+) terminal and high tension wire terminal (coil wire tower). See Fig 2. Replace ignition coil if resistance is not within specification. See appropriate IGNITION COIL RESISTANCE table.
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
| Application | Primary | Secondary |
|---|---|---|
| Corolla | 1.1-1.7 | 9000-15,700 |