CHECK POWER SUPPLY OF BLOWER MOTOR RELAY.

1) Turn the ignition switch to OFF.

2) Remove the blower motor relay.

3) Turn the ignition switch to ON.

4) Use a tester to measure the voltage between the blower motor relay connector and chassis ground.

Connector & terminal

(B386) No. 2 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Repair the open circuit of blower motor power supply line harness.