Directed Electronics Python 571XP Installation Manual page 24

transceiver will excite the transponder, which is located (but not visible) in the head of the ignition key. The key
transponder will then send a unique code back to the transceiver for evaluation. If the code matches a
valid code of the system, the vehicle will be allowed to start. Most of these transponder-based systems can be
bypassed using p p / / n n 5 5 5 5 5 5 U U or 5 5 5 5 6 6 U U . . Some may require additional parts from the vehicle manufacturer. Consult you
dealer for the applications. For most Ford PATS transponders, as well as Lexus and Toyotas, p p / / n n 5 5 5 5 5 5 F F can be used,
except for the following vehicles, which will require p p / / n n 5 5 5 5 5 5 U U : '97 and newer Mark VII, and 2000 and newer
Taurus/Sable, Contour/Mystique and Focus.
b b y y p p a a s s s s i i n n g g G G M M v v e e h h i i c c l l e e a a n n t t i i - - t t h h e e f f t t s s y y s s t t e e m m s s ( ( V V A A T T S S ) )
Vehicles with the GM VATS (Pass Key) systems have a resistor embedded in the ignition key. If the VATS decoder
module does not measure the proper resistance when the vehicle is started, the starter and fuel pump may be dis-
abled for up to ten minutes. An optional "VATS pack" of resistors is available ( ( p p / / n n 6 6 5 5 2 2 T T ) ) . One of the resistors in the
pack will match the resistor in the key.
The VATS wires will be two very light-gauge wires coming out of the steering column. The colors of the wires vary,
but they are often contained in orange tubing - either both will be white wires, or one wire will be purple/white
and the other white/black. Determine the value of the resistor in the key. Then follow the diagram below to
bypass VATS during remote start operation. If the 3/1 BLUE status output has been programmed for factory secu-
rity re-arm, use the H3/2 BLUE/BLACK third ignition output to control the relay.
N N O O T T E E : : When connecting to the VATS wires, it is not important which wire is cut.
H3/1 BLUE OR
H3/2 BLUE/BLACK
(+) 12V CONSTANT FUSED
DIA-621
2 2 4 4
PROPER RESISTOR VALUE
87 87A
85
86
30
TO IGNITION KEY SWITCH
X
CUT
X
TO VATS DECODER MODULE
© 2004 Directed Electronics, Inc. Vista, CA