Eclipse L4-1997cc 2.0L DOHC (1991)
Ignition Coil: Testing and Inspection
Coil Testing
1.
With ignition switch in the off position, disconnect the primary wires from the ignition coil.
2.
Using an appropriate ohm meter with a minimum of 10 megohm impedance, connect the positive test lead to the primary coil terminal #3.
3.
Connect the negative test lead of the ohm meter to primary coil terminal #2.
Primary Coil Resistance
Standard Value:
0.77 - 0.95 ohm
4.
Leaving the positive test lead of the ohm meter connected to primary coil terminal #3, connect the negative test lead of the ohm meter to primary
coil terminal #1.
Primary Coil Resistance
Standard Value:
0.77 - 0.95 ohm
5.
Connect the negative ohm meter test lead to cylinder #1 coil, secondary terminal. Connect the positive ohm meter test lead to cylinder #4 coil,
secondary terminal.
Secondary Coil Resistance
Standard Value:
10.3k - 13.9k Ohms
6.
Connect the negative ohm meter test lead to cylinder #3 coil, secondary terminal. Connect the positive ohm meter test lead to cylinder #2 coil,
secondary terminal.
Secondary Coil Resistance
Standard Value:
10.3k - 13.9k Ohms
7.
Inspect the primary and secondary coil connections and wiring.
8.
Inspect the ignition coil for signs of physical damage such as:
Cracks in the case
Signs of leakage
Carbon tracks
Burned, melted or discolored plastic
9.
If any of the above test results are not within specifications or physical damage is apparent, replace the ignition coil.
