SWAMP'S DIESEL PERFORMANCE & TECHNOLOGY

REVERSE ENGINEERING: 7.3l POWER STROKE INJECTOR DRIVER MODULE

 
Project Overview

Desoldering Components

IDM Models

Printed Circuit Board Details

Component Identification

Circuit Tracing & Component Symbols

Completed IDM Schematic

Sub-Circuit Analysis

Injector Waveforms

HIGH-PERFORMANCE IDM'S

IDM TESTING & REPAIR

After desoldering everything, the next step was to identify all the components.

A few of these items have industry-standard part numbers on them. To learn what they were, it was just a matter of searching the manufacturer's web site to find the appropriate product data sheet.

Other items have Ford-specific (proprietary) part numbers and there was no information available as to what they were, necessitating extensive testing of the components, both out of the IDM in test circuits and in the IDM with it running and firing injectors to capture the input and output waveforms with an oscilloscope.

In the bottom row, the 5 devices with the mounting holes may look similar (Industry-standard TO-220 case size) but they are 5 very different devices, and only one had a useful part number on it.

 

 

A closer view of some of the smaller items...

 

 

 

 

 

 

 

 

 

 

 

And a really, really close view of some of the smallest components.

"102" is a 1000 Ohm resistor,

"1910" is a 191 Ohm resistor.

"VA3" is a capacitor.

Try to figure out what a "G1 x" or "2L c" is, and who makes it. ;)