| Fig. 1: Cutaway view of a direct ignition system's individual
ignition spark coil
|
NOTE: Each spark plug has a separate ignition coil attached
to it.
| Fig. 2: Direct ignition primary coil resistance check
|
- Disconnect the negative battery cable.
- Remove the coil from the spark plug and engine compartment.
- Using a multimeter or equivalent, measure the resistance between terminals
No. 1 and No. 2 of the coil wire harness. The resistance should be between
0.68–0.83 ohms. If not within this range, replace the coil.
| Fig. 3: Direct ignition secondary coil current flow check
|
NOTE: This procedure requires the use of a digital ammeter
or multimeter. Do not use an analog model.
- Disconnect the negative battery cable.
- Remove the coil from the spark plug and engine compartment.
- Using a digital multimeter and a 12 volt power supply, connect the meter
in series between the primary and secondary terminals of the coil.
- Measure the current amount. If the reading is not between 0.29–33
milo-amps, replace the coil.
