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Diagnostic Trouble Code: P0171
Diagnostic Trouble Code Name: Fuel System too lean (I6, bank 1- V8)
Vehicle Make: Ford
Vehicle Model: Falcon (BA)
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:
Left Daytime Running Lamps Control Circuit
Possible Sensor Faults
Body Control Module
Possible Related Diagnostic Trouble Codes
DTC B2600 or B2605
Circuit / System Description
The ambient light sensor is used to monitor outside lighting conditions. The ambient light sensor provides a voltage signal that will vary between 0.2 and 4.9?volts depending on outside lighting conditions. The body control module (BCM) provides a 5?V reference signal to the ambient light sensor which is permanently grounded. The BCM monitors the ambient light sensor signal circuit to determine if outside lighting conditions are correct for either daytime running lights (DRL) or automatic lamp control when the headlamp switch is in the AUTO position. In daylight conditions, the BCM will command the DRLs ON by applying a pulse width modulated (PWM) voltage to the left and right DRL control circuits illuminating the DRLs. Any function or condition that turns on the headlamps will cancel DRL operation.
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