FixVault

Ignition Coil Resistance (GSi)

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

Fig 1: Measuring Ignition Coil Resistance (GSi)
G91E16356Courtesy of GENERAL MOTORS CORP.