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11. Move RED test lead to secondary
ignition coil terminal.
Refer to vehicle service manual for
location of secondary ignition coil
terminal.
Verify BLACK test lead is connected to
primary ignition coil negative (-) terminal.
12.View reading on display.
13.If vehicle is DIS, repeat Steps 11 and 12
for remaining ignition coils.
14.Test Results - Secondary Coil
Typical resistance range of secondary
ignition coils is 6.0 - 30.0KΩ.
Refer to vehicle service manual for your
vehicles resistance range.
15.Repeat test procedure for a HOT
ignition coil.
NOTE: It is a good idea to test ignition
coils when they are both hot and cold,
because the resistance of the coil could
change with temperature. This will also
help in diagnosing intermittent ignition
system problems.
16.Test Results - Overall
Good Ignition Coil: Resistance readings in
Steps 9, 14 and 15 were within
manufacturers specification.
Bad Ignition Coil: Resistance readings in
Steps 9, 14 and 15 are not within
manufacturers specification.