DTC P0115 (TW) - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT MALFUNCTION

DTC P0115 (TW) - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT MALFUNCTION Subaru Outback BG

Turn ignition off. Connect SSM. Start Engine. Set SSM function mode to F04. If displayed value is greater than 300°F (150°C), go to next step. If displayed value is less than - 40°F (- 40°C), go to step 3). If value is between - 40 and 300°F (- 40 and 150°C), repair poor contact in connectors or harness of ECT sensor connector, ECM connector or coupling connector E21. See appropriate wiring diagram in «WIRING DIAGRAMS»(ref-26255) article.
Turn ignition off. Remove idle air control solenoid valve by-pass air hose. Disconnect ECT sensor harness connector. Select function mode F04. If displayed value is less than - 40°F (- 40°C), replace ECT sensor. If displayed value is greater than - 40°F (- 40°C), repair short circuit in harness between ECT sensor connector and ECM connector.
Turn ignition off. Remove idle air solenoid valve by-pass air hose. Disconnect ECT sensor harness connector. Turn ignition on. Check voltage between ECT sensor harness connector terminal No. 1 and chassis ground. If voltage is 4 volts or greater, go to next step. If voltage is less than 4 volts, repair open circuit in harness or poor contact at ECM and ECT sensor connector.
Turn ignition off. Check resistance between ETC harness connector terminal No. 2 and chassis ground. If resistance is 5 ohms or less, replace ECT sensor. If resistance is greater than 5 ohms, repair open circuit in harness or poor contact in ECM and ECT sensor connector.

DTC P0115 (TW) - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT MALFUNCTION Subaru Outback BG