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Ignition Coil Resistance

Disconnect electrical connector and ignition coil wire from ignition coil. Using ohmmeter, measure primary and secondary resistance. See Fig 1 . Replace ignition coil if readings are not within specification. See IGNITION COIL RESISTANCE  .

IGNITION COIL RESISTANCE - Ohms

Application Primary Secondary
Standard Emissions 1.35-1.65 22,100-29,900
Upgraded Emissions 1.08-1.32 22,100-29,900
Fig 1: Measuring Ignition Coil Resistance
G91G16358Courtesy of GENERAL MOTORS CORP.