Diagnostic Trouble Code: B2139
Diagnostic Trouble Code Name: Incorrect BEM Response Code.
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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Diagnostic Trouble Code Description:
Keyless Entry Antenna 4
Possible Sensor Faults
Remote Control Door Lock Receiver
Possible Related Diagnostic Trouble Codes
DTC B3122
Circuit / System Description
The console active antenna is located in the center console and is used to establish low frequency communications with the keyless entry transmitter. The keyless entry console active antenna is only used when the console passive antenna was unable to locate a transmitter within the interior of the vehicle. This may be due to a keyless entry transmitter battery being low or radio/low frequency interference.
When a valid transmitter is placed into the pocket located in the center console, and either the brake pedal is depressed or the ignition switch is pressed, the console active antenna broadcasts a challenge to the transmitter. This causes a low frequency coupling to occur between the transmitter and the console active antenna. If the response from the transmitter is a valid response, and all of the security requirements are met, the vehicle\'s engine will start, or be allowed to go into accessory mode.
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