CHECK OPEN CIRCUIT OF MAIN FAN RELAY CONTROL.

Measure the resistance of harness between ECM and main fan relay connector.

Connector & terminal

(B135) No. 19 — (F27) No. 32:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

Open circuit of harness between ECM and main fan relay connector

Poor contact of coupling connector