There is power on pin 3 and 9. No PDC is installed, this is just a motor and wiring harness sitting on the ground. PDC is gone, key switch is gone. I am hot wiring directly off the engine harness, tracing pins back from the ecu plug.
Dark Blue Pin 9 is connected directly to battery.
Pin 3 is ign wire, also direct to battery.
pin57 ASD Sense. dg/or i believe. This is also ran to 12v off the battery.
Pin 51 is ASD Relay output. This is the wire im watching to verify ECU status. When you turn on the "key" the ecu comes on, does its 2 second deal. Fires all 8 injectors and turns back off waiting crank signal.
Changing CKP Sensor...No help.
Tried unplugging each sensor and then cranking engine to test for bad sensor grounding out...No change.
All sensors have 5v reference while cranking.
Battery voltage does not drop below 10v while cranking.
The Transmission section of the ENGINE HARNESS has been CUT OFF!!! I did not cut this, is there any wires running down towards the tranny that may cause a failure to start if not connected? or not seeing a sensor? I cant imagine a VSS having that kind of authority though.
I will post some pictures this afternoon of what i got, hopefully i can get this thing figured out.
Right now im leaning towards a bad ECU....But have no freaking way to test it!
Vehicle Application: 1994 Dodge B250 Sportsman 5.9L, Vin Z, Eng Cfg V8
Customer Concern: Cranks no start, no spark, no injector pulse, no scan tool communication.
Tests/Procedures: 1. Check the power supplies to the Powertrain Control Module (PCM) on the Red wire at pin 3 and the Dark Blue wire at pin 9.
2. If no power on pin 9, check the fusible links behind the battery. The ignition switch gets power from the Red wire. the Red wire gets power from an Orange fusible link located near the battery.
3. If the Red wire at the ignition switch has power, check for a bad ignition switch. The Dark Blue wire gets power at key on.
Potential Causes: Burnt Fusible Link
Diagnostic Codes: None
Average Reported Mileage: 201633
Confirmed Fix Summary
Confirmed Fix 1 - Ignition Switch Wiring
Confirmed Fix Details
Tech Reported Fix Details Confirmed Fix
June 17, 2009 1994 Dodge B250, Sportsman 5.9L, Vin Z, Eng Cfg V8 *
Repaired Ignition Switch Wiring
201,633 miles Ignition Switch Wiring