Hey guys you might be interested in this free software if you have a laptop and can build or rig your own cables....anyways here's the link to the page.....lots of reading to get there if not just scroll down to Scanning and Tunning software......at the bottom of the list is another link 6.5...
Here's the start how to check
APP Sensor Assembly Connector Pin outs
Pin
Wire Color
Description
A Gray APP Sensor 3 -Ground
B Purple APP Sensor 2 -Ground
C Light Blue APP Sensor 2 -Signal
D Tan APP Sensor 2 -5 Volt Reference Circuit
E Yellow w/ Black stripe (or Brown) APP Sensor 1...
High guys I'm new and dumb to diesel's....My dumb question is the black box just below the master cylinder is it and ABS electronic controller....That's my guess.....Being trying to keep this old bird going as it will run down the highway and just die about 10 minutes everytime..Lift pump new...