Ignition Coil And Electronic Control Unit Check

Turn the ignition switch to the "ON" position. Connect positive voltmeter lead to ignition coil positive terminal. Connect remaining lead to ignition coil negative terminal. See Fig 1.
Quickly move a magnet back and forth over the secondary impulse sender coil. If the voltmeter needle moves, but engine would not start, replace the ignition coil. If the voltmeter needle does not move, replace ignition control unit.

Fig 1: Voltmeter Hookup for Checking Ignition Coil A Electronic Control Unit
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