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Home >> Jaguar >> 1978 >> XJ-S >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection - LUCAS Electronic Fuel Injection >> Testing >> Injectors >> Injector Windings

Injector Windings

  1. Use ohmmeter to measure resistance of each injector winding. This can be accomplished by disconnecting electrical connection to each injector and measuring across both terminals. Resistance should be 2.4 ohms at 68°F (20°C).
  2. Now check for short circuit between windings and ground by connecting ohmmeter from injector terminals to ground (injector body). Resistance should be infinity. If injector fails either of these tests, replace injector.