Resistance Inspection

Turn the ignition switch to the LOCK position.
Disconnect the negative battery cable.
Remove the extension manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Disconnect the fuel injector connector.
Measure the resistance between terminals A and B of the fuel injector using a tester.
- If within the specification, perform out the "Circuit Open/Short Inspection".
- If not within the specification, replace the fuel injector.
  
  Fig 1: Identifying Fuel Injector Connector Terminals
  Courtesy of MAZDA MOTORS CORP.
  
  Resistance
  
  Approx. 13.8 ohms [20 °C {68 °F}]