CHECK WIRING HARNESS.

Using a tester, measure the voltage between the connectors and chassis ground.

Connector & terminal

(B420) No. 7 (+) — Chassis ground (−):

(B420) No. 24 (+) — Chassis ground (−):

(B419) No. 12 (+) — Chassis ground (−):

QUESTION

Is the voltage 5 V or more?

Yes No

Repair or replace the short circuit of the harness.