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Diagnostic Trouble Code: 121
Diagnostic Trouble Code Name: Throttle Position Sensor (TP) circuit is out of the self-test range.
Vehicle Make: Ford
Vehicle Model: Falcon (EL)
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:
Front Impact Sensor 1
Possible Sensor Faults
SDM - Sensing and Diagnostics Module (Airbag Black Box)
Possible Related Diagnostic Trouble Codes
DTC B0083-B0088
Circuit / System Description
The inflatable restraint front end and side impact sensors utilize a bidirectional 2-wire circuit. The sensors modulate current on the interface to send ID, state of health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a ground for the sensors. When the ignition is turned ON and input power from the SDM is first detected, the sensors respond by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5?seconds. The sensors continually communicate status messages to the SDM, which determines if a fault is present in the sensor circuit. When a fault is detected, the SDM may reset the sensors up to 2?times by removing and reapplying power to it. If the fault is still present, the SDM will set a DTC.
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