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Diagnostic Procedure NCEC0077 1 CHECK POWER SUPPLY 1. Turn ignition switch “OFF”. SEF205X 3. Turn ignition switch “ON”. SEF997W Voltage: Approximately 5V OK or NG OK © GO TO 3. NG © GO TO 2. 2 DETECT MALFUNCTIONING PART Check the harness for open or short between ECM and engine coolant temperature sensor. © Repair harness or connectors. 3 CHECK GROUND CIRCUIT 1. Turn ignition switch “OFF”. Refer to wiring diagram. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK © GO TO 5. NG © GO TO 4. Front exhaust tube Front Coolant temperature DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR (ECTS) (CIRCUIT) SR20DE Diagnostic Procedure EC-135 |