Dodge R1500 1999 Service Manual page 1555

Fig. 11: Single Injector w/Excessive Current Flow - Current Pattern
EXAMPLE #4 - CURRENT CONTROLLED DRIVER
Example #4 is of a Ford 4.6L SEFI VIN [W]. See Fig. 12 for
the known-good waveform pattern. This Ford system is different from
the one above in EXAMPLE #3 as it peaks at 900 milliamps and the
actual opening of the injector (set point) is just below 600
milliamps.
This is offered as a comparison against the Ford pattern
listed above, as they are both Ford SEFI injectors but with different
operating ranges. The point is that you should not make any broad
assumptions for any manufacturer.
Fig. 12: Single Injector w/Normal Current Flow - Current Pattern
EXAMPLE #5 - CURRENT CONTROLLED DRIVER
The known-good waveform in Fig. 13 is from a Chrysler 3.0L V6