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 Using Tester
Courtesy of MAZDA MOTORS CORP.