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) Turn the blower fan switch to ON.

5) Measure the voltage between terminals using a tester.

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.