CHECK HARNESS.

1) Turn the ignition switch to OFF.

2) Disconnect the blower motor connector and power transistor connector.

3) Measure the resistance between the blower motor and power transistor using a tester.

Connector & terminal

(B87) No. 2 — (B57) No. 4:
(B87) No. 1 — (B57) No. 3:

QUESTION

Is the resistance less than 10 Ω?

Yes No

Repair or replace the harness.