Ignition Coil Resistance (Spectrum)

1. Remove distributor cap and rotor. Remove primary leads from ignition coil. Using ohmmeter, check resistance between primary terminals of coil. See Fig 1 .
2. Check secondary resistance between coil secondary terminal and primary positive terminal. Replace coil if readings are not within specifications. See IGNITION COIL RESISTANCE table.

Fig 1: Spectrum Ignition Coil Resistance Check (Prizm Is Similar)

Courtesy of GENERAL MOTORS CORP.