MAC TOOLS EM721 Manual Del Usuario página 53

Typical measurements should be between 0.5Ω and 2.0Ω .
To get the actual figures for a specific coil, check the manufacturer's specifications.
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.
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 "
•
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.
800.MACTOOLS
All manuals and user guides at all-guides.com
Black
Black
Red
GM DIS Conventional
Ignition Coil Ignition Coil
(TYPE II)
" jack.
Red
53