Measure the resistance between VDCCM connector and relay box connector.
Connector & terminal
LHD
(B310) No. 22 — (B370) No. 4: (B310) No. 9 — (B370) No. 6:
RHD
(B310) No. 22 — (F90) No. 4: (B310) No. 9 — (F90) No. 6:
Is the resistance less than 0.5 Ω?
Repair the harness connector between the VDCCM and relay box.