Ignition Coil: Testing and Inspection

^ Make sure the ignition switch is "OFF."

1. Disconnect the distributor lead and wiring from the ignition coil.

NOTE: Do not insert the J 39200 probe into the ignition coil connectors. The female terminals could be spread and deformed, resulting in intermittent operation of the coil. Be sure to make contact with only the front edge of the terminals.

2. Connect an ohmmeter as shown in Figure, Step 1. Use the high scale. The reading should be infinite. If not, replace the coil.
3. Connect the ohmmeter as shown in Figure, Step 2. Use the low scale. The reading should be 0.1 ohms. If not, replace the coil.
4. Connect the ohmmeter as shown in Figure, Step 3. Use the high scale. The meter should read 5k-25k ohms. If not, replace the coil.
5. Reconnect the distributor lead and wiring to the coil.