CHECK HARNESS BETWEEN ECM AND ENGINE COOLANT TEMPERATURE SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM and engine coolant temperature sensor.

3) Measure the resistance of harness between ECM connector and engine coolant temperature sensor connector.

Connector & terminal

(B134) No. 49 — (E8) No. 1:

(B134) No. 67 — (E8) No. 2:

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 in harness between ECM connector and engine coolant temperature sensor connector

Poor contact of coupling connector