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Home >> Saturn >> 2002 >> Vue 2.2 D, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel System (Gasoline) >> Fuel Injector Coil Test (4.2L) >> Test Description
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Test Description

The numbers below refer to step numbers in diagnostic procedure.

  1. 3

    This step tests each fuel injector resistance within a specific temperature range. If any fuel injectors display a resistance outside of specified value, replace fuel injector.

  2. 4

    This step determines if all fuel injectors are within 3 ohms of each other. If highest resistance value is within 3 ohms of lowest resistance value, then all fuel injector coil windings are okay.

  3. 5

    This step determines which fuel injector is faulty. After subtracting highest and lowest resistance values from average value, replace fuel injector that has greatest resistance difference from average.

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