FixVault

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.

    Specification 

    Above 10 megohms 

    Fig 1: Measuring Insulation Resistance From Terminal 1A To Ignition Coil Case
    G03637899Courtesy of MAZDA MOTORS CORP.