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Typical measurements should be between 0.5Ω and 2.0Ω .
To get the actual gures for a specic coil, check the manufacturer’s specications.
NOTE: Test the ignition coil both when it is hot and when it is cold.
Secondary Windings Resistance Test
This test checks for resistance in the secondary windings of the conventional and DIS (Distributorless Ignition
System) ignition coils.
Red
Red
Black
Black
GM DIS
Ignition Coil
(TYPE II)
Conventional
Ignition Coil
Meter setup to measure resistance in the secondary windings of ignition coils:
• Set the rotary switch to resistance (Ω ) setting.
• If “ ” is present on the display, press the “DWL” button until “ ” disappears.
• Insert the black lead in the “COM” jack.
• Insert the red lead in the “ ” jack.
• Disconnect the coil from the ignition system.
Connect:
• Black test probe to the high-tension terminal on the coil.
• Red test probe to the positive (+) terminal on the coil.
Typical measurements are between 6kΩ and 20kΩ.
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