Replace Engine Coolant Temperature Sensor

CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR ECM)

Wire Harness Side:

ECT Sensor Connector

ECT Sensor Connector

Front View

Front View

ECM Connector

fr

1 II

V-

+

r

Front View

(a) Disconnect the C4 ECT sensor connector.

(b) Disconnect the C24 ECM connector.

(c) Measure the resistance between the terminals of the wire harness side connectors.

Standard resistance

Tester Connection

Specified Condition

C4-2 (THW) or C24-97 (THW) - Body ground

10 kQ or higher

(d) (e)

Reconnect the ECT sensor connector. Reconnect the ECM connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM

Engine Coolant Temperature Circuit Range / Performance Problem

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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