2002 LW300 V6 113,000 miles. Engine cranks but won’t start.

When I turn key to run I can’t hear the fuel pump kick on and my gas gauge shows empty (when I know it has 3/4 tank full). The service engine soon and service wrench lights are on and my OBD2 reader won’t link (yet it works on my other vehicle).

The battery is new and fully charged.
I sprayed starting fluid in throttle body and that wouldn’t get engine to fire.
I jumped fuel relay and got pump to kick on and had 41psi at the fuel test port on fuel rail.
I tried disconnecting the ECT sensor and it didn’t start.
I tested the crank position sensor and it showed 874 ohms.
Security is off.

any ideas where to go from here? I’m stumped.