P0117

DTC P0117 ENGINE COOLANT TEMPERATURE (ECT) CIRCUIT LOW INPUT





WIRING DIAGRAM

CIRCUIT DESCRIPTION
Incorporated with coolant temp. gauge and installed to thermostat case, this sensor measures the temperature of the engine coolant and converts its change into that in resistance through the thermistor like the air temperature sensor.
That is, as coolant temperature lowers, resistance increases and as it rises, resistance decreases.
By monitoring the resistance of the coolant temperature sensor, ECM detects the engine coolant temperature and that affects most systems under the control of ECM.






DETECTING CONDITION

DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select "DTC" mode on scan tool and check DTC.

NOTE:
- Before inspecting, be sure to check that coolant temp. meter in combination meter indicates normal operating temperature (Engine is not overheating).
- When this DTC and P1705 are stored together, also clear DTC stored in TCM after completion of repair.








INSPECTION