Cranking but no spark or injection pulse

I am trying to figure out why 2005 Hyundai accent is not starting. Accidentally it was jumpstarted wrong and now issues. Replaced main 100 amp fuse and ignition coil but still not starting. Theres power to the coil and injectors but no pulse. Ohms on crank sensor are 800ohms. Tried ac volt test on sensor and is 1.15v cranking and .017v without cranking. Also tried a bypass and put a test light on battery positive and tapped crank sensor plug and did not get a relay click or pulse. All fuses are good. Will try looking for voltage or light test positive to computer harness to see if computer is good. Any suggestions is appreciated. Thanks

Moving your thread to the repair section

any codes?

Does the check engine light illuminate when key is on? Does a scan tool communicate with it?

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Great questions from Cheryl and Ben. Checking for the 5V reference would be another quick and easy test of PCM health.

There were no codes until i unplugged the crank sensor and it was p0335 I reconnected plug and erased the codes and it never returned.

This is not a hall effect system but a wastespark. This hyundai doesnt have 5 volts going to sensors from pcm. The crank is magnetic and produces its own voltage from rotation of crankshaft.

i never payed attention to the check engine light.I did notice that i had rpm gauge move indicating pcm is okay

Hello, check when you turn key ON if immobilizer indicator light in the dash is ON or not.
Second when you cranking the engine does your tacho needle moves ??
Does your PCM read the rpm signal ??

Next step your should check at a sensor (for ex* MAF sensor or TPS) if there is 5 volt

These are some first steps your should check, and let us know how went

Only code that comes up is p0108 map sensor.

Code. P0108 comes up. Map sensor. I tested the harness plug on map sensor with ignition key on and pin 1 is 5.5volts pin 2 is 5 volts. Pin 3 is 5 volts. Pin 4 is 0 volts.

Code. P0108 comes up. Map sensor. I tested the harness plug on map sensor with ignition key on and pin 1 is 5.5volts pin 2 is 5 volts. Pin 3 is 5 volts. Pin 4 is 0 volts. Also the check engine light is not lit.

Will check resistance on that tomorrow. Apparently there is injection pulse now on all 4 injectors after replacing crank sensor. Still no pulse at coil negative but do have power on coil positive. No spark is now the issue.there is power to test light on both terminals of coil when harness is plugged into coil and backprobed.

check your 5 volt reference to any sensor like maf sensor

Yes there is 5 volt reference signal on tps and map sensor.Im thinking of an open coil negative wire somewhere from coil to pcm.