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) and "Hot" is from 50°C (122°F) to 100°C (212°F).

1. REMOVE AIR CLEANER HOSE
2. DISCONNECT HIGH-TENSION CORDS AND IGNITION COIL CONNECTORS FROM IGNITION COILS





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

Primary coil resistance
Cold: 0.67 - 1.05 Ohms
Hot: 0.85 - 1.23 Ohms

If the resistance is not as specified, replace the ignition coil.
4. REMOVE IGNITION COILS





5. INSPECT SECONDARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the positive (+) and high-tension terminals.

Secondary coil resistance:
Cold: 9.3 - 16.0 K ohms
Hot: 11.7 - 18.8 K ohms

If the resistance is not as specified, replace the ignition coil.
6. REINSTALL IGNITION COILS
7. RECONNECT IGNITION COIL CONNECTORS AND HIGH-TENSION CORDS
8. REINSTALL AIR CLEANER HOSE