Diesel Data: Automotive Repair

Ignition Coil

1. Disconnect wire connector at ignition coil.

Primary Coil Test:






2. Connect one end of an ohmmeter to the (-) side of the ignition coil. Connect the other end to the (+) side of the ignition coil.

Primary Resistance (Cold): 0.41 - 0.50 ohms

3. If primary coil resistance value is not within specifications, replace ignition coil.