Can a 2017 ECM/PCM be tested?

[Crewguy498]

20!7 Ram 1500 Hemi with 8 speed. Having an electrical issue. Computer is shutting down #3 cylinder OR I have an intermittent issue between computer and coil Pack and/ or fuel injector. Initial test with noid light was inconclusive. That test will be ran again. Theory of operation suggests variables of (1) a bad computer (2) wiring from ECM to coil/ injector intermittent open/ short to ground situation.

The computer is a big variable.
I have copies of the wiring and can rule out a shorted/open connection.

The wiring was tested with a noid light and shown as not lighting up checking coil/ injector wiring. I’m going back next week to OHM out the wiring from coil/ injector to computer.

we have both a scanner and HP Tuner to diagnose a problem. We are looking into sending the computer to HP Tuners to unlock. But the question is : will the ECM be tested for a problem before unlocking?
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[HEMIMANN]

Why can't you run a scan? PCM doesn't need to be unlocked to scan, only to adjust.

Misfire on cylinder #3 is a classic sign of roller lifter and cam failure, btw.

 

[Crewguy498]

Why can't you run a scan? PCM doesn't need to be unlocked to scan, only to adjust.

Misfire on cylinder #3 is a classic sign of roller lifter and cam failure, btw.

Thanks for the reply…
We did run a scan. We also pulled the driver’s valve cover. But we did not measure valve lift at that time. I’m kind of taking over this repair from my son. The codes pointed to the coil. We swapped coils but problem stayed at #3. Noid lights confirmed #3 not getting signal to fire either the coil or injector. I’m prepared to pull the heads for a non-DOD cam swap if needed. Either way, the PCM will be needing unlocking.

 

[Crewguy498]

UPDATE:
Replaced OEM PCM with a used PCM from EBay. Engine is running on all 8 again. The initial wiring problem must have damaged the PCM.