Ignition Coil: Testing and Inspection

NOTE: To further assist you during testing, use the wiring diagrams located in CHASSIS ELECTRICAL DIAGRAMS.

CAUTION: Always turn ignition OFF when connecting or disconnecting terminals.
Be sure to check the integrity of the wires, connectors, ignition switch, battery terminals and fuses before replacing an expensive component.

1. Connect a voltmeter between coil terminal 15 (+) and ground.
2. Turn ignition to the ON position. Reading should be:

Approx. 12 volts

If not, check wiring, connectors (incl. battery terminals), fuse and ignition switch. Repair as needed and retest.
3. Turn ignition OFF.
4. Disconnect all wires to the ignition coil.

Testing Ignition Coil:

5. Connect an ohmmeter between terminal 1 (-) and 15 (+). Reading should be:

0.52 - 0.76 ohm

If not, replace and retest with new coil.
6. Connect the ohmmeter between terminal 1 (-) and 4 (center). Reading should be:

2400 - 3500 ohm

If not, replace and retest with new coil.
7. If coil passes test, it is in good operating condition.
8. Reconnect all connectors.