Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1997 Toyota Avalon XLFACTORY OEM SERVICE PROCEDURE
Ignition Coil Resistance (DISTRIBUTORLESS Ignition System)
- 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. Replace ignition coil if primary resistance is not within specification. See DISTRIBUTORLESS TYPE IGNITION SYSTEM IGNITION COIL RESISTANCE table.
- To check ignition coil secondary resistance, remove ignition coil. Using ohmmeter, check ignition coil secondary resistance. See Fig 2. Replace ignition coil if secondary resistance is not within specification. See DISTRIBUTORLESS TYPE IGNITION SYSTEM IGNITION COIL RESISTANCE table. Reinstall ignition coil and electrical connector.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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