CHECK HARNESS BETWEEN SUB FAN RELAY AND ECM.

1) Disconnect the connectors from ECM.

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

Connector & terminal

(B134) No. 24 — (F27) No. 12:

QUESTION

Is the resistance less than 1 Ω?

Yes No

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