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Diagnostic Trouble Code: B1790
Diagnostic Trouble Code Name: Autolamp Sensor Input Circuit Failure. Twilight sensor input circuit failure
Vehicle Make: Ford
Vehicle Model: Falcon (BF)
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:
Inflatable Restraint System Indicator Circuit
Possible Sensor Faults
SDM - Sensing and Diagnostics Module (Airbag Black Box)
Possible Related Diagnostic Trouble Codes
DTC B2500
Circuit / System Description
When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform a turn-on test to diagnose critical malfunctions within the SDM itself. The test ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The sensing and diagnostic module monitors the driver air bag module low level end voltage in order to verify the deployment loop for short to ground or short to voltage. The SDM inspects the wiring connection to the air bag module by letting the infinitesimal current flow through the internal circuit and verify the resistance. If the warning indicator is normally turned ON and OFF, the sensing and diagnostic module will continuously measure the indicator terminal voltage.
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