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Home >> Mazda >> 2004 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System >> Ignition Coil Inspection >> Insulation Resistance Of Case

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.
    • If not as specified, replace the ignition coil.
    1. Specification Above 10 megohms 
    Fig 1: Measuring Insulation Resistance From Terminal 1A To Ignition Coil
    G00989506Courtesy of MAZDA MOTORS CORP.
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