Ignition Coil: Testing and Inspection

Ignition Coil Circuit:

NOTE: Resistance will vary with the coil temperature; specifications are at 70~F (20~C).

1. With the ignition switch OFF, disconnect the primary connectors and the coil wire.

Ignition Coil Test:

2. Using an ohmmeter, measure the resistance of the primary winding between the A and D terminals. Replace the coil if the resistance is not within specifications.

Resistance: 0.3 - 0.4 ohms

3. Using an ohmmeter, measure the resistance of the secondary winding between the A and secondary winding terminals. Replace the coil if the resistance is not within specifications.

Resistance: 9,040 - 13,560 ohms

4. Using an ohmmeter, measure the resistance of the secondary winding between the B and D terminals. Replace the coil if the resistance is not within specifications.

Resistance: 2,090 - 2,310 ohms

5. Check for continuity between the A and C terminals. Replace the coil if there is no continuity.