Replace Engine Coolant Temperature Sensor


Wire Harness Side:

ECT Sensor Connector

ECT Sensor Connector

Front View

Front View

ECM Connector


1 II




(a) Disconnect the B4 ECT sensor connector.

(b) Disconnect the B30 ECM connector.

(c) Measure the resistance. Standard resistance

Tester Connections

Specified Conditions

B4-2 (THW) or B30-97 (THW) - Body ground

10 kQ or higher

(d) Reconnect the ECT sensor connector.

(e) Reconnect the ECM connector.



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