Volkswagen Corrado (1993 year). Manual - part 222

 

  Index      Volkswagen     Volkswagen Corrado - service repair manual 1993 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  220  221  222  223   ..

 

 

Volkswagen Corrado (1993 year). Manual - part 222

 

 

WAVEFORMS - INJECTOR PATTERN TUTORIAL 

         EXAMPLE #4 - CURRENT CONTROLLED DRIVER

         From 1984 to 1987, Chrysler used this type injector drive on
their TBI-equipped engines. See Fig. 22 for a known-good pattern.
Instead of the ground side controlling the injector, Chrysler
permanently grounds out the injector and switches the power feed side.
Most systems do not work this way.
         These injectors peak at 6 amps of current flow and hold at 1
amp.

WAVEFORMS - INJECTOR PATTERN TUTORIAL 

         EXAMPLE #5 - CURRENT CONTROLLED DRIVER

         These two known-good waveform patterns are from a Chrysler 3.
0L V6 VIN [3].  The first waveform, Fig. 23, is a dual trace pattern
that illustrates how Chrysler uses the rising edge of the engine speed
signal to trigger the injectors. The second waveform, Fig. 24, was
taken during hot idle, closed loop, and no load.

WAVEFORMS - INJECTOR PATTERN TUTORIAL 

WAVEFORMS - INJECTOR PATTERN TUTORIAL 

         EXAMPLE #6 - CURRENT CONTROLLED DRIVER

         This known-good pattern from a Ford 3.0L V6 PFI VIN [U]
illustrates that a zener diode inside the computer is used to clamp
the injector's inductive kick to 35-volts on this system. See Fig. 25.

 

 

 

 

 

 

 

Content   ..  220  221  222  223   ..