2006 Ridgeline. Multiple random misfires from all cylinders worse on rpm less than 2500. New crankshaft position sensor and 4 camshaft position sensors, two of which are OEM. With key on but not started I tested the three wires to the camshaft position sensor harness with the camshaft position sensor removed. Source wire 12 volts, ground wire, signal wire 5 volts. With the camshaft position sensor plugged back in the source wire had 12 volts, ground wire, and the signal wire dropped to 1.8 volts, all 4 camshaft position sensors the same. No change in voltage with metal waved close to the 4 camshaft position sensors. No specific camshaft position sensor codes detected. Is this a likely PCM failure?