Resistance Inspection

Measure the resistance of the spark plug using a tester as shown in the figure.
- If not within the specification, replace the spark plug.
  Resistance
  
  L3: 3.0-7.5 kilohms [25°C {77 °F}]
  
  AJ: 8.0-20 kilohms [25°C {77 °F}]
  
  Fig 1: Measuring Resistance Of Spark Plug
  Courtesy of MAZDA MOTORS CORP.