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Diagnostic Trouble Code: P0117
Diagnostic Trouble Code Name: Engine Coolant Temperature Sensor (ECT) circuit low input
Vehicle Make: Ford
Vehicle Model: Falcon (AU)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Solar Load Sensor Circuit
Possible Sensor Faults
Heater and Blower and Air Conditioning Control Module
Possible Related Diagnostic Trouble Codes
DTC B0163 or B0183
Circuit / System Description
The ambient light/sunload sensor integrates the sunload sensor and passenger compartment temperature sensor.
This sensor assembly provides information about:
Sun heat intensity
Passenger Compartment Temperature
The solar sensor is connected to ground and to the 5?V stabilized voltage supply through the HVAC control module. As the sunload increases, the sensor signal voltage also increases and vice versa. The signal varies between 1.4-4.5?V and is provided to the HVAC control module.
The passenger compartment temperature sensor is a negative temperature co-efficient thermistor. A signal and low reference circuit enables the sensor to operate. As the air temperature increases, the sensor resistance decreases. The sensor signal varies between 0-5?V.
Bright or high intensity light causes the vehicles interior temperature to increase. The HVAC system compensates for the increased temperature by diverting additional cool air into the vehicle.
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