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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:
Intake Manifold Tuning Valve Solenoid Control Circuit High
Voltage
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0660, P0661, or P0662
Circuit / System Description
An ignition?1 voltage is supplied directly to the intake manifold tuning (IMT) valve solenoid. The engine control module (ECM) controls the IMT valve solenoid by grounding the control circuit via an internal driver switch. The primary function of the driver is to supply ground for the IMT valve solenoid. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the voltage on the control circuit.
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