92 dodge ram 150 5.2 this truck has no spark no injector pulse has no 8 volt computr to rank sensor, no ground b/y wire to asd relay.

12V power is provided to the coil through the automatic shutdown relay (ASD). The PCM controls the primary ignition pulse (which creates the spark) by grounding the coil based on inputs from the crankshaft position sensor and the distributor pickup coil.

The ASD relay is controlled by the PCM (computer). The PCM will shut the ASD relay off if it doesn't see a signal from the crankshaft position sensor. Check that sensor and the wiring from the sensor to the PCM.

Are you missing anything else? Engine cranking, you have fuel injector pulse?
At your ignition coil, brown wire with white tracer, should be hot engine cranking. Probably the same color wire for voltage at your fuel injectors. Use a test light to check for voltage.
If no voltage, check signal from cam and crank sensors. Some of these vehicles the computer has to see proper signals from both the cam and sensor or it won't ground the asd relay. The asd relay sends voltage to several systems including the ignition coil and fuel injectors. Any applicable trouble codes?

Check the ASD relay , auto shut down relay in the under hood fuse / relay box . The ASD relay supplies B+ voltage to the injectors an ignition coils plus other thing's ! This may be you device voltage code problem as well as the other codes

Hi mate start at the easiest point which will be to check your EARTH to make sure everything is earthed.

First question is are you getting spark to the plugs ?
Then are you getting fuel to the injectors, and injector pulse ?
Have you checked the ASD relay ?
I would check those things next.

Check the ASD relay in the fuse box. Swap it with the starting relay. If the engine fails to roll over. Thats your problem. If not, check and see if your fuel injector connectors have voltage to them if not its a bad PCM. Hope this helps.

You got a crank sensor at back,on top of bellhousing.
Injector pulse, I believe is controlled by hall effect sensor in distributor, as well as spark

If it cranks good but won't start, have a helper crank it while visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse.
If your missing several system, an example, at the ignition coil and fuel injectors, engine cranking, check the dark green wire with orange tracer for voltage? If no voltage that leads back to asd relay. I'm not saying the relay is faulty. Your computer has to see both the cam and crank sensor signals or it may not ground the asd relay. The asd relay supplies voltage to several systems.

Check ASD (automatic shut down) Relay For Function