Measure the voltage between VDCCM and chassis ground.
Connector & terminal
(B310) No. 83 (+) — Chassis ground (−):
(B310) No. 81 (+) — Chassis ground (−):
Is the voltage less than 0.5 V?
Repair or replace the harness connectors between the VDCCM, TCM, ECM and the steering angle sensor.