Engine Will Not Start, and HDS Does Not Communicate With the PCM (MIL Comes On and Stays On, No DTCs Set)

Engine will not start, and HDS does not communicate with the PCM (MIL comes on and stays on, no DTCs set)

Engine will not start, and HDS does not communicate with the PCM
(MIL comes on and stays on, no DTCs set)

Troubleshoot the PCM power and ground circuits PCM Power and Ground Circuit Troubleshooting.

Also check for

No power to PCM

Also check for

No ground to PCM