CHECK HARNESS BETWEEN ECM AND ENGINE COOLANT TEMPERATURE SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

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

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

Connector & terminal

(B134) No. 34 — (E8) No. 2:

(B134) No. 29 — (E8) No. 1:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following items.

Open circuit in harness between ECM and engine coolant temperature sensor connector

Poor contact of coupling connector