Ignition Coil: Testing and Inspection

IGNITION COIL INSPECTION

NOTICE: Cold and Hot in these sentences express the temperature of the coils themselves.
Cold is from - 10°C (14°F) to 50°C (122°F).
Hot is from 50°C (122°F) to 100°C (212°F).




1. NO.1 IGNITION COIL: DISCONNECT IGNITION COIL CONNECTOR AND HIGH-TENSION CORD FROM IGNITION COIL.
2. NO.2 IGNITION COIL: REMOVE IGNITION COIL.
3. INSPECT PRIMARY COIL RESISTANCE.



- Using an ohmmeter, measure the resistance between the positive (+) and negative (-) terminals.

Primary coil resistance:
- Cold: 0.36 - 0.55 0hms
- Hot: 0.45 - 0.65 0hms

- If the resistance is not as specified, replace the ignition coil.

4. INSPECT SECONDARY COIL RESISTANCE.



- Using an ohmmeter, measure the resistance between the positive (+) and high-tension terminals.

Secondary coil resistance:
- Cold: 9.0 - 15.4 K ohms
- Hot: 11.4 - 18.1 K ohms

If the resistance is not as specified, replace the ignition coil.

5. NO.2 IGNITION COIL:
- Reinstall ignition coil.
6. NO.1 IGNITION COIL.
- Reconnect ignition coil connector and high-tension cord to ignition coil.