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MRD Equipped Vehicles |
Local 916-416-3546
Toll Free 1-866-704-5625
5325 Elkhorn Blvd. #201 Sacramento Ca. 95842
Home Find a Technician VATS Equipped Vehicles Transponder Equipped Vehicles . In 1879 E. H. Hall discovered that when he placed a metal strip carrying a current in a magnetic field , a voltage difference was produced across the strip. The side of the strip that is at the higher voltage depends on the sign of the charge carrier; Hall's work demonstrated that in metals the charge carriers are negative. Today it is known that this negative charge carrier is the electron . The Hall effect has again become an active area of research with the discovery of the quantized Hall effect, for which Klaus von Klitzing was awarded the 1985 Nobel Prize in physics. Before von Klitzing's work it was thought that the amount of voltage difference across the strip varied in direct proportion to the strength of the magnetic field. The greater the magnetic field, the greater the voltage difference. Von Klitzing showed that under the special conditions of low temperature, high magnetic field, and two-dimensional electronic systems (in which the electrons are confined to move in planes), the voltage difference increases as a series of steps with increasing magnetic field. Columbia Encyclopedia, Sixth Edition, Copyright (c) 2004.
This device is used currently in selected General Motors (GM) products introduced since 1995,
This security device has a multitude of names, Hall effect sensor, MRD, Magnetic resonance device, PASSLOCK 1, and the Magnetic rotating device. Regardless of what we call the device the funtionality remains the same. Sacramento UnLocks utilizes the acronym MRD.
As previously mentioned, the MRD has a magnet and a sensor. In the GM device the magnet is mounted within the ignition cylinder exterior. The sensor is mounted through the ignition housing. Under normal conditions the magnet passes by the sensor everytime the ignition rotates to the on or run position. The operator never realizes that a security check has occurred. Upon a forcible rotation, the mounting configuration by design allows the magnet to disengage from the retaining segment on the ignition cylinder exterior cylinder plug; thus not passing by the sensor, therefore not allowing fuel to remain pumping and the engine to shut off. If a system fails or has become vandalized Sacramento UnLocks can program a new cylinder and key the new ignition to your exisiting key!
CADILLAC
ESCALADE 1999-2003
CHEVROLET & GMC
ASTRO VAN 1998-2004
AVALANCHE 2002-2004
BLAZER 1998-2004
CAVALIER 1996-2004
ENVOY 1999-2004
EXPRESS VAN, G SERIES VANS 10, 20, 30 1998-2004
IMPALA 2000-2004
MALIBU 1997-2004 *
MONTE CARLO SEDAN & COUPE 2000-2004
SAFARI VAN 2000-2004
S10'S C/K PICK UP'S 1998-2004
SIERRA, SONOMA 1998-2004
SUBURBAN, TAHOE, YUKON 1998-2004
TRAILBLAZER 2002-2004
XUV 2004
OLDSMOBILE
ACHIEVA 1996-1998
ALERO 1999-2004
BRAVADA 1998-2004
CUTLASS 1997-2000
INTRIGUE 1998-2002
PONTIAC
GRAND AM 1999-2004
SUNFIRE 1996-2004
* DENOTES VEHICLE COULD BE EQUIPPED WITH A TRANSPONDER. BOTH TYPES OF SECURITY DEVICES WERE INSTALLED IN THIS MODEL.
Page updated10/7/2004 If different data is found and would like this page updated, please notify us. This information is supplied as reference material.
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