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 AND HIGH-TENSION CORD FROM IGNITION COIL
2. INSPECT PRIMARY COIL RESISTANCE





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

Primary coil resistance:
Cold: 0.36 - 0.55 Ohm
Hot: 0.45 - 0.65 Ohm

- If the resistance is not as specified, replace the ignition coil.
3. 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 Ohm
Hot: 11.4-18.1 k Ohm

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