This module lets you bypass virtually any type of factory passive anti-theft system
on the market today to remotely start your vehicle without permanently disabling
the vehicle’s anti-theft system.
In 1983, General Motors came out with their rst Vehicle Anti- Theft System
known as VATS which uses a resistor pellet in the key. Since that time, other more
sophisticated theft systems have followed. These theft systems are still resistance
based, and use a “Transponder” which is a tiny pellet or chip embeded within the
the head of the ignition key.
Determine which type system you have in your vehicle. If unsure -- follow the
chart on the previous pages to determine the system you have. There are several
types of systems as outlined below:
General Motors VATS and PASSLOCK 1 and PASSLOCK 2 theft systems. For
these, you will be required to dial-in a resistor value which matches the one on your
security system. The method is described on the following pages for each type
system using the dip switches and the variable resistor. The variable resistor is a
10 turn potentiometer which can be dialed up from zero ohms to 1,000 ohms.
SATURN vehicles up to the 2000 model year simply hook up to the Universal
Alarm Bypass Module as shown on page 13. If you have a 2000 model year or
later Saturn vehicle, see page 14.
TRANSPONDER / PASSKEY 3 / P.A.T.S. systems require a transponder (or
extra key) to be used with our system. Follow the directions beginning on page
Use this chart with VATS, PASSLOCK 1 and PASSLOCK 2.
Dip Switch # 2 3 4 5 6
Resistor Value 0.825 1.65 3.32 6.65 13.3 Final Resistance (k ohms)
ON ON ON ON ON 0.000 +Variable Resistor ValueOFF ON ON ON ON 0.825 +Variable Resistor ValueON OFF ON ON ON 1.650 +Variable Resistor ValueOFF OFF ON ON ON 2.475 +Variable Resistor ValueON ON OFF ON ON 3.320 +Variable Resistor ValueOFF ON OFF ON ON 4.145 +Variable Resistor ValueON OFF OFF ON ON 4.970 +Variable Resistor ValueOFF OFF OFF ON ON 5.795 +Variable Resistor ValueON ON ON OFF ON 6.650 +Variable Resistor Value OFF ON ON OFF ON 7.475 +Variable Resistor Value ON OFF ON OFF ON 8.300 +Variable Resistor Value OFF OFF ON OFF ON 9.125 +Variable Resistor ValueON ON OFF OFF ON 9.970 +Variable Resistor ValueOFF ON OFF OFF ON 10.795 +Variable Resistor Value ON OFF OFF OFF ON 11.620 +Variable Resistor Value OFF OFF OFF OFF ON 12.445 +Variable Resistor ValueON ON ON ON OFF 13.300 +Variable Resistor ValueOFF ON ON ON OFF 14.125 +Variable Resistor ValueON OFF ON ON OFF 14.950 +Variable Resistor ValueOFF OFF ON ON OFF 15.775 +Variable Resistor ValueON ON OFF ON OFF 16.620 +Variable Resistor ValueOFF ON OFF ON OFF 17.445 +Variable Resistor ValueON OFF OFF ON OFF 18.270 +Variable Resistor ValueOFF OFF OFF ON OFF 19.095 +Variable Resistor ValueON ON ON OFF OFF 19.950 +Variable Resistor Value OFF ON ON OFF OFF 20.775 +Variable Resistor ValueON OFF ON OFF OFF 21.600 +Variable Resistor Value OFF OFF ON OFF OFF 22.425 +Variable Resistor ValueON ON OFF OFF OFF 23.270 +Variable Resistor ValueOFF ON OFF OFF OFF 24.095 +Variable Resistor ValueON OFF OFF OFF OFF 24.920 +Variable Resistor Value OFF OFF OFF OFF OFF 25.745 +Variable Resistor Value
All resistor values shown are in ‘K-ohms’ -- or 1,000 ohms. Thus the
1.650 value shown in the third row is 1,650 ohms or 1.65 K ohms.
DipSwitch #1 Dip Switch #7 Dip Switch #8
VATS OFF OFF OFF
PASSLOCK 1 ON ON OFF
PASSLOCK 2 OFF OFF OFF
Before performing this set up, make sure the vehicle will start with the transmitter
if you leave the ignition key in the key cylinder.
1. Put dip switch 1, 7 and 8 into the OFF (up) position
2. Measure the resistance of the key. It should be between 392 ohms and 11,800
ohms. To do this, put the ohm meter probes on each side of the key pellet. This
value should be close to one of the following (all values in ohms): 392, 523, 681,
887, 1.13K, 1.47K, 1.87K, 3.01K, 3.74K, 4.75K, 6.04K, 7.5K, 9.53K, 11.8K.
3. Locate the closest value which is less than your desired value on the chart on
page 8. Set dip-switches 2 through 6 as shown on page 8.
4. Put your ohm meter (multi-meter) probes on the two silver resistance measuring
pads through the opening shown in the drawing -- making good contact with
these two silver pads on the board. (See drawing on page 1). Or put your two
probes into the two holes on the bottom of the case making contact with the
underside of the silver pads. Either contact point method will work.
5. With the probes held rmly, nish reaching the nal resistance value needed
for your system by turning the screw on the variable resistor on the side of the
unit next to the dip switches. Turn the screw until the resistance value matches
the resistance value of the key.
6. Locate the pair of VATS wires (sometimes White/Black striped and Purple/
Black striped). These wires are often in a plastic tube. Be careful not to cut
into the Yellow Air Bag wires! The Air Bag wires are often in a yellow plastic
tube that is clearly marked. The VATS wires run from the ignition switch down
the column under the dash. Connect the Universal Alarm Bypass Module using
the diagram below.
White/Green to Status wire
Dip Switch #1 Off
Dip Switch #7 Off
Dip Switch #8 Off
*See page 16 if you do not have a Status wire on your remote
starter
PASSLOCK 1:
1. Put dip switches 1 and 7 in the ON (down) position and dip switch 8 in the OFF
(up) position.
2. Remove the bottom half of the steering column shroud.
3. Locate the small three wire harness (with White, Black and Yellow wires)
running down from the ignition key cylinder on the top right hand side of the
steering column into the instrument panel. These wires are usually the smallest
wires in the harness.
4. Cut the Yellow wire in half and strip back both ends. Remove some of the
insulation on the Black wire without cutting the wire. The White wire is not
used.
5. Turn the ignition key to the “ON” or “RUN” position and place the vehicle into
reverse.
6. With the ignition key still in and turned to the “RUN” position, measure the
resistance between the key side of the Yellow wire (connected to the + positive
lead of your digital meter) and the Black wire (connected to the - negative side
of your digital meter).
7. Turn the ignition key to the “START” position and release it. Denote the
resistance reading as this will be the resistance that will need to be duplicated.
Repeat this step several times to verify that you have a consistent reading.
8. When you have identied the correct resistance use the chart on page 8 to set
the resistance on the bypass module. Locate the closest value which is less than
your desired value. Set dip-switches 2 through 6 to match the chart on page 8
for this value.
9. Put your ohm meter (multi-meter) probes on the two silver resistance measuring
pads through the opening shown in the drawing -- making good contact with
these two silver pads on the board. (See drawing on page 1). Or put your two
probes into the two holes on the bottom of the case making contact with the
underside of the silver pads. Either contact point method will work.
10. With the probes held rmly -- dial-in the nal resistance value needed for your
system by turning the screw on the variable resistor on the side of the unit
next to the dip switches. Turn the screw until the resistance value matches the
resistance value of the key.
11. Locate the Black “Bulb Test” wire on the left side of the steering column in
cavity “D” or “E” of the Black 5-way connector, just above the main ignition
switch connector. This is a different wire than the Black wire mentioned in
the above steps.
12. Connect the bypass module using the diagram below. Be sure to tape over any
WHITE/GREEN to WHITE/
BLACK Status wire from
the remote starter.*
*See page 16 if you do not have a Status wire
To verify the Passlock 1 installation has the correct resistance value
and that the installation is correct -- hold the WHITE/GREEN wire
to ground and start the vehicle with the key. If the vehicle starts
and stays running - the installation is correct.
PASSLOCK 2:
1. Turn dip switches 1, 7, and 8 to the OFF (up) position.
2. Remove the bottom half of the steering column shroud.
3. Locate the small three wire harness (with Red/White, Yellow and Orange/
Black wires on trucks and White, Yellow and Black on cars) that come
off the ignition lock cylinder. These are usually the smallest wires.
4. Cut the Yellow wire in half and strip back both ends. Remove the insulation
on the Orange/Black wire (trucks) or the Black wire (cars) without cutting
the wire. The Red/White or White wire is not used.
5. Turn the key to the “Run” position and place the vehicle in Reverse.
6. Connect the key side of the Yellow wire to the + positive lead of your digital
meter and the Black wire (cars) or Orange/Black wire (trucks) to the - nega-
tive lead of your digital meter.
7. Turn the ignition key to the “START” position and release it. Denote the
resistance reading as this will be the resistance that will need to be duplicated.
Repeat this step several times to verify that you have a consistent reading.
8. When you have identied the correct resistance use the chart on page 8 to set
the resistance on the bypass module. Locate the closest value which is less
than your desired value. Set dip-switches 2 through 6 to match the chart on
page 8 with this value.
9. Put your ohm meter (multi-meter) probes on the two silver resistance measuring
pads through the opening shown in the drawing -- making good contact with
these two silver pads on the board. (See drawing on page 1). Or put your two
probes into the two holes on the bottom of the case making contact with the
underside of the silver pads. Either contact point method will work.
10. With the probes held rmly -- dial-in the nal resistance value needed for your
system by turning the screw on the variable resistor on the side of the unit
next to the dip switches. Turn the screw until the resistance value matches
the resistance value of the key.
11. Connect the bypass module using the diagram on the next page. Be sure to
tape over any connections to not leave any exposed wires.
To verify that this installation is correct -- hold the WHITE/GREEN wire
and the GRAY/BLACK wire to ground and start the vehicle with the key.
If the vehicle starts and stays running - the installation is correct.
WHITE/GREEN TO WHITE/BLACK
Status output from car starter
(or to constant negative ground
output when remote starter is