Ignition Coil: Testing and Inspection

Inspection
Primary coil winding
FS [MTX], KL
1. Disconnect the 3-pin connector from the distributor.








2. Use an ohmmeter to measure resistance of the primary coil winding.

Specification: 0.49-0.73 ohm [at 20 °C {68 °F}]

3. If not within the specification, replace the distributor.

FS [ATX]
1. Disconnect the ignition coil connector from the ignition coil.





2. Use an ohmmeter to measure resistance of the primary coil winding.

Specification: Approx. 0.4 ohm [at 20 °C {68 °F}]

3. If not as specified, replace the ignition coil.

Secondary coil winding
FS [MTX], KL
1. Disconnect the 3-pin connector from the distributor.
2. Remove the distributor cap.








3. Use an ohmmeter to measure resistance of the secondary coil winding.

Specification: 20-31 k-ohm [at 20 °C {68 °F}]

4. If not within the specification, replace the distributor.

FS [ATX]
1. Disconnect the high-tension lead from the ignition coil.




2. Use an ohmmeter to measure resistance of the secondary coil winding.

Specification: Approx. 8.7 K-ohm [at 20 °C (68 °F)]

3. If not within the specification, replace the ignition coil.