Ignition Coil: Testing and Inspection

IGNITION COIL INSPECTION

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

1. DISCONNECT IGNITION COIL CONNECTOR.
2. DISCONNECT HIGH-TENSION CORD FROM IGNITION COIL.





3. INSPECT PRIMARY COIL RESISTANCE.
- Using an ohmmeter, measure the resistance between the positive (+) and negative (-) terminals.

Primary coil resistance:
Cold: 0.21 - 0.33 Ohms
Hot: 0.27 - 0.39 Ohms

- 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: 6.4 - 11.1 K Ohms
Hot: 8.2 - 13.0 K Ohms

- If the resistance is not as specified, replace the ignition coil.
5. RECONNECT HIGH-TENSION CORD TO IGNITION COIL.
6. RECONNECT IGNITION COIL CONNECTOR.