Ignition Coil Secondary Resistance
- Place ignition switch in "OFF" position. Disconnect ignition coil connector and secondary wire from coil tower. Measure resistance between negative coil terminal and coil tower. See Fig 1.
- If reading is between 6500-11,500 ohms, ignition coil is okay. Go to WIRING HARNESS test. If reading is less than 6500 ohms or greater than 11,500 ohms, replace ignition coil.