MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
Insulation Resistance of Case
1. Disconnect the high-tension lead.
2. Disconnect the ignition coil connector.
3. Measure the insulation resistance from terminal 1A to ignition coil case, and terminal 2A to ignition coil case using an ohmmeter.
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If not as specified, replace the ignition coil.
Specification: Above 10 megohms
