CHECK HARNESS BETWEEN MAIN FAN RELAY 2 AND ECM.

Measure the resistance between main fan relay 2 terminal and ECM connector.

Connector & terminal

(B134) No. 25 — (F27) No. 22:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the open circuit of the harness between main fan relay 2 terminal and ECM.