CHECK HARNESS BATTERY SHORT BETWEEN RELAY BOX AND VDCCM.

1) Turn the ignition switch to ON.

2) Measure the voltage between VDCCM connector and chassis ground.

Connector & terminal

(B310) No. 9 (+) — Chassis ground (−):

QUESTION

Is the voltage less than 1 V?

Yes No

Repair the harness between VDCCM and relay box. Check the fuse SBF holder.