Ignition Coil: Testing and Inspection

Primary Circuit Inspection:

PRIMARY CIRCUIT
1. Disconnect the electrical connector.
2. Using a high impedance meter, measure the resistance between the electrical connectors.

PRIMARY RESISTANCE VALUE
0.68 - 0.83 ohms

Secondary Circuit Inspection:

SECONDARY CIRCUIT
NOTE: Since diodes are built into the coil's secondary circuit, resistance cannot be measured.
1. Connect a 12 VDC power supply and digital ammeter in series between primary and secondary terminals of ignition coil.
2. Measure the current flow through the circuit.

SECONDARY CURRENT VALUE
Approx. 0.32 mA