CHECK HARNESS.

1) Turn the ignition switch to ON.

2) Use a tester to measure the voltage between the relay holder and chassis ground.

Connector & terminal

(F9) No. 7 (+) — Chassis ground (−):

(F9) No. 5 (+) — Chassis ground (−):

(B473) No. 1 (+) — Chassis ground (−):

(B473) No. 2 (+) — Chassis ground (−):

(B473) No. 5 (+) — Chassis ground (−):

(B473) No. 6 (+) — Chassis ground (−):

(B473) No. 9 (+) — Chassis ground (−):

(B473) No. 10 (+) — Chassis ground (−):

QUESTION
Is the voltage battery voltage?
Yes	No
	Check the DC power supply circuit.