CONTINUITY CHECK OF WIRING HARNESS.

1) Disconnect connector (B420) from the power supply CM.

2) Measure the voltage between the power supply CM connector and chassis ground.

Connector & terminal

(B420) No. 12 (+) — Chassis ground (−):
(B420) No. 33 (+) — Chassis ground (−):

QUESTION
Is the voltage 10 V or more?
Yes	No
	Repair or replace the open circuit of harness.