Actron AutoTroubleShooter CP7677 User Manual

Page 20

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20

12. 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 con-

nected to primary ignition coil nega-
tive (-) terminal.

13. View reading on display.

14. If vehicle is DIS, repeat Steps 12

and 13 for remaining ignition coils.

15. Test Results - Secondary Coil

• Typical resistance range of sec-

ondary ignition coils is 6.0 - 30.0K

.

• Refer to vehicle service manual for

your vehicles resistance range.

16. 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 tempera-
ture. This will also help in diagnosing
intermittent ignition system prob-
lems.

17. Test Results - Overall

Good Ignition Coil: Resistance read-
ings in Steps 10, 15 and 16 were
within manufacturers specification.

Bad Ignition Coil: Resistance read-
ings in Steps 10, 15 and 16 are not
within manufacturers specification.

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