Ignition Coil: Testing and Inspection

IGNITION COILS INSPECTION

NOTICE: "Cold" and "Hot" in these sentences express the temperature of the coils themselves. "Cold"is from 100 C (140 F) to 500C (122°F) and "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 Ohms
Hot: 0.45 - 0.65 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: 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