What was the original symptom before you changed all those parts?There is no spark.
I have replaced, crank position sensor, camshaft position sensor, electric fuel pump, auto shutdown relay, fuel pump relay.
Signal power is being sent to switch the relays closed.
Power is going through both relays from the ignition and onto the computer alongside the fenderwall on the passenger side.
I can feed power to the electric fuel pump.
So why will the engine not start?
On the dakota (not entirely sure on the first gen '92) there is an
ASD (auto shutdown relay that gets operated by the ECM, if it detects
a serious timing issue with a sensor.
First of all, the power for the ECM does not come through any relays.
It gets it's power directly from the PDC.
The auto shutdown relay is operated by the ECM/PCM and will shut
down the ignition coil driver, +12 volt to the coil and the injectors solenoids
The fuel pump relay is controlled directly by the ECM and it can shut it
down as well.
Please explain what you mean by "poweris going through both relays from the
ignition and the computer..that is NOT how it works.
The ECM always controls the low side of :
1: the ignition coil through the coil driver in the ECM
2. the injector solenoids by individual injector drivers in the ECM
3. The fuel pump relay.
The ASD relay supplies B+ to the high side of the ignition coil and individual
The fuel pump relay supplie B+ to the fuel pump.
All of this is directly controlled by the ECM
I don't know what the original problem was that you decided to "throw
a bunch of parts: at the symptom..so perhaps you should go back a bit
and explain why you changed those parts.