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MaryAnn Surman
MaryAnn Surman Posted on Oct 06, 2015
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Instructions for installing resister for anti theft system

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Anonymous

  • 3 Answers
  • Posted on Oct 12, 2008

SOURCE: 1994 cadillace anti theft system

I just had this same problem with a '96 . do you have a vats key in your '94? you need to bypass the VATS system. read some of the blogs on this site and it will tell you how to do it. I fixed mine with a $2 resistor from radio shack.

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Anonymous

  • 3 Answers
  • Posted on Dec 25, 2008

SOURCE: How can I bypass a anti auto theft system on my 1990 cadillac seville?

I Have A Seville 1990, When That Happen To Me I Got The Inginion
Replaced Problem Solved. What Is Happening Is Your Key Has A Chip And That Chip Is A Resister And When The Valve Is Not Sented To The Computer It Disengages the Fuel Pump And Than Tells You To Wait. Soon All That Will Happen Is You Will Get The Wait 3 Mins And It Will Never Start, A Good Locksmith Can Take Care Of This For You And That Will Save You Some Money. Cause If You Go To The Dealer Ouch They Will Hit You Up. But I Asure This Is How It Will Happen Cause It Is How It Happen To Me
And Sorry There Is No By Passing The Computer

honeymokey

honeymokey

  • 3113 Answers
  • Posted on Jun 15, 2009

SOURCE: the anti theft system won't let me start my

You will have to replace the ign. lock cylinder

Anonymous

  • 51 Answers
  • Posted on Jul 16, 2009

SOURCE: anti-theft system

Read your manual or take it to the dealer. It sounds like it needs reset.....if this is a factory anti theft system, only the installer may be able to help you.

Pablo Gonzalez

  • 733 Answers
  • Posted on Jul 03, 2010

SOURCE: anti-theft system will not allow car to start -

if the theft light is was flashing on you, put the key in the ignition and turn all the way until the instrument cluster lights up, just don't start the car. leave it like that for aprox. 10 min. or until light goes out. when that happens, turn of(don't take out keys) and try to start car. hope it works.

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My anti-theft system came on and my key wouldn't come out but it would start and my windows don't roll down and my sunroof doesn't open does that have to do with the anti-theft system
When the anti-theft system in your car is activated, it is designed to prevent unauthorized access to the vehicle and protect it from theft. The specific features and functions affected by the activation of the anti-theft system can vary depending on the make and model of your car. However, here are some common ways in which the anti-theft system can impact your vehicle:

  1. Ignition Interlock: In many vehicles, the anti-theft system can prevent the engine from starting or cut off power to the ignition system. This is often the primary function of the anti-theft system to deter thieves from driving the vehicle.
  2. Key Removal: Some anti-theft systems can also lock the key in the ignition switch, making it difficult or impossible to remove the key when the system is activated.
  3. Door Locks: The anti-theft system may lock or unlock the doors automatically when it is activated. This can be intended to prevent unauthorized entry.
  4. Windows and Sunroof: In some cases, the anti-theft system can disable the power windows and sunroof to prevent someone from gaining access to the interior through these openings.
  5. Alarm Activation: If your vehicle is equipped with a security alarm system as part of the anti-theft system, it may activate the alarm if unauthorized entry is detected or if someone tries to tamper with the vehicle.
  6. Vehicle Immobilization: Some advanced anti-theft systems can immobilize the vehicle by cutting off fuel or electrical power to the engine.
If you're experiencing issues with your key not coming out, windows not rolling down, and the sunroof not opening, it's possible that these problems are related to the activation or malfunction of the anti-theft system. However, it's essential to consult your vehicle's owner's manual or contact the manufacturer or a qualified automotive technician for specific information about how your vehicle's anti-theft system operates and to diagnose and resolve the issues you're facing.

In many cases, anti-theft system problems may require specialized equipment and knowledge to diagnose and repair, so seeking professional assistance is often the best course of action.
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Jul 20, 2023 • Cars & Trucks
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Can you turn off anti theft using toggle switch
no you cant by pass or hotwire anti theft system
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Oct 25, 2021 • Cars & Trucks
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I hv replaced my battery my starter and the starter relay switch on a 1999 mercury villiager. But when i try to st a rt it turn the key n nothing whats wrong with my car
Does it have a vehicle theft deterrent system ? Try putting the gear selector into neutral to see if it will start then , if it does the park neutral safety switch could be the problem . Looking at a wiring diagram an testing the starter electrical circuits with a DVOM - digital volt ohmmeter would be the proper way to diagnose , not guessing an just replacing parts .

Starting System The starting system consists of the following:
  • battery
  • ignition switch
  • transmission range (TR) sensor
  • inhibit relay
  • anti-theft relay (if equipped)
  • starter motor
Starter Motor
The starter motor:
  • is a permanent-magnet, gear reduction, 12V DC motor.
  • has an integral starter solenoid.
Inhibit Relay
The inhibit relay:
  • is a mini ISO relay.
  • switches power to the starter solenoid to engage the starter motor when it receives a START signal from the ignition switch (11572).
Transmission Range (TR) Sensor
The TR sensor enables the circuit to the inhibit relay in the PARK or NEUTRAL position only.
Anti-Theft Relay (If Equipped)
The anti-theft relay:
  • is a normally closed relay.
  • is grounded by the anti-theft system, which opens the relay contacts and disables the starting circuit.
  • PINPOINT TEST A: THE ENGINE DOES NOT CRANK CONDITIONS DETAILS/RESULTS/ACTIONS A1 CHECK ANTI-THEFT SYSTEM OPERATION NOTE: The four different anti-theft indicator operating states are OFF, ON, flashing once per second and flashing once per three seconds. Before continuing, make sure the anti-theft indicator is in the OFF state.
      Observe the anti-theft indicator.

    • Is the anti-theft indicator ON or flashing?
    Yes REFER to Section 419-01 .

    No GO to A2 . A2 CHECK THE BATTERY Check the battery condition and charge; refer to Section 414-00 .
    • Is the battery OK?
    Yes GO to A3 .

    No CHARGE or INSTALL a new battery as required. TEST the system for normal operation. A3 CHECK THE BATTERY GROUND CABLE Measure the voltage between the positive battery post and the battery ground cable connection at the cylinder block.
    • Is the voltage reading greater than 10 volts?
    Yes GO to A4 .

    No INSTALL a new battery ground cable. TEST the system for normal operation. A4 CHECK THE STARTER MOTOR GROUND Measure the voltage between the battery positive post and the starter motor case.
    • Is the voltage greater than 10 volts?
    Yes GO to A5 .

    No CLEAN the starter motor mounting flange and make sure the starter motor is properly mounted. TEST the system for normal operation. A5 CHECK THE POWER SUPPLY TO THE STARTER MOTOR Measure the voltage at the starter motor B terminal.
    • Is the voltage reading greater than 10 volts?
    Yes GO to A6 .

    No REPLACE the positive battery cable. TEST the system for normal operation. A6 CHECK THE STARTER MOTOR B TERMINAL
    Starter S Connector
    Connect a fused (30A) jumper wire to the B terminal of the starter motor and momentarily connect the other end to the starter solenoid S connector (harness side).
    • Does the starter motor engage and the engine crank?
    Yes GO to A7 .

    No INSTALL a new starter motor. TEST the system for normal operation. A7 CHECK START INPUT TO THE STARTER MOTOR Measure the voltage at the starter motor solenoid S connector terminal (harness side).
    • Is the voltage reading greater than 10 volts?
    Yes CLEAN the starter solenoid S terminal and connector. CHECK the wiring and the starter motor for a loose or intermittent connection. TEST the system for normal operation.

    No GO to A8 . A8 CHECK THE START INPUT TO THE INHIBIT RELAY
    Start Inhibit Relay C178

    Measure the voltage between the start inhibit relay C178 Pin 7, Circuit ST01 (RD) harness side and ground.
    • Is the voltage greater than 10 volts?
    Yes GO to A9 .

    No REFER to Section 211-05 . A9 CHECK CIRCUIT ST02 3 (R/W) Connect a jumper wire between start inhibit relay C178 Pin 7, Circuit ST01 (RD), harness side and C178 Pin 6, Circuit ST02 (RD/WH), harness side.
    • Does the starter motor engage and the engine crank?
    Yes REMOVE the jumper wire. GO to A10 .

    No REPAIR Circuit ST02 3 (RD/WH). TEST the system for normal operation. A10 CHECK THE INHIBIT RELAY GROUND Measure the resistance between the start inhibit relay C178 Pin 2, Circuit STE1 (BU), harness side and ground.
    • Is the resistance reading 5 ohms or less?
    Yes GO to A11 .

    No REPAIR Circuit STE 1 (BU). TEST the system for normal operation. A11 CHECK POWER TO THE INHIBIT RELAY Measure the voltage between start inhibit relay C178 Pin 1, Circuit ST98 (BU/WH) (Circuit ST03 [LG/BK] without anti-theft), harness side and ground.
    • Is the voltage greater than 10 volts?
    Yes Install a new inhibit relay. TEST the system for normal operation.

    No If equipped with anti-theft, GO to A12 . Otherwise, GO to A14 . A12 CHECK CIRCUIT ST95 (G/R)
    Anti-theft relay
    Measure the voltage between anti-theft relay C193 Pin 2, Circuit ST95 (GN/RD), harness side and ground.
    • Is the voltage greater than 10 volts?
    Yes GO to A13 .

    No REPAIR Circuit ST95 (GN/RD). TEST the system for normal operation. A13 CHECK CIRCUIT ST97 (LG/B) Measure the voltage between anti-theft relay C193 Pin 4, Circuit ST97 (LG/BU), harness side and ground.
    • Is the voltage greater than 10 volts?
    Yes GO to A16 .

    No GO to A14 . A14 CHECK POWER TO THE TR SENSOR
    TR Sensor
    Measure the voltage between TR sensor C161 Pin 3, Circuit ST04 (LG), harness side and ground.
    • Is the voltage greater than 10 volts?
    Yes GO to A15 .

    No REPAIR Circuit ST04 (LG). TEST the system for normal operation. A15 CHECK CIRCUIT ST03 (LG/B) Measure the resistance between TR sensor C161 Pin 2, Circuit ST03 (LG/BK), harness side and anti-theft relay C193 Pin 4, Circuit ST97 (LG/BK), harness side. Measure the resistance between TR sensor C161 Pin 2, Circuit ST03 (LG/BK), harness side and ground.
    • Is the resistance less than 5 ohms between the TR sensor and the anti-theft relay and greater than 10,000 ohms between the TR sensor and ground?
    Yes INSTALL a new TR sensor. TEST the system for normal operation.

    No REPAIR Circuit ST03 (LG/BK). TEST the system for normal operation. A16 CHECK CIRCUIT ST98 (L/W) Measure the resistance between anti-theft relay C193 Pin 3, Circuit ST98 (BU/WH), harness side and inhibit relay C178 Pin 1, Circuit ST98 (BU/WH), harness side. Measure the resistance between anti-theft relay C193 Pin 3, Circuit ST98 (BU/WH), harness side and ground.
    • Is the resistance less than 5 ohms between the anti-theft relay and the inhibit relay and greater than 10,000 ohms between the anti-theft relay and ground?
    Yes REFER to Section 419-01 .

    No REPAIR Circuit ST98 (BU/WH). TEST the system for normal operation.
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Jun 02, 2019 • Mercury Cars & Trucks
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96 olds lss turns over but something is robbing the power security light stays on
The security light is for anti-theft system ,when the light is on or flashing ,it think's the vehicle is being stolen . It will disable the fuel system ( fuel injectors ) so it won't start ! Does your key have a pellet on the side of the key ? Trying to find out which anti-theft system yours has . If it does have a little black pellet on the side of the part that goes into the ignition lock cylinder , That pellet is a resistor an when you fit into the the lock cylinder there are two contacts inside the lock that read the resistance . There is a module that then can say if it's the right resistance or not , allowing or not to let the fuel injectors fire. The problem with this anti-theft system the contacts and or the wires break ! This is the VAT'S - vehicle anti -theft system or they have pass lock - pass key 1 , 2 , 3 . On the vats system a by-pass can be done . On you tube there are videos showing how to do it .
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Oct 04, 2015 • Cars & Trucks
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How to completely disable the anti-theft security system?
Look on YOUTUBE complete instructions are provided, you will need an ohm meter and a selection of resistors find out what resister you need and wire it in, bypassing the ignition cylinder
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Jan 01, 2015 • 2001 Oldsmobile Alero
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2answers

Looking for instructions to bypass, remove,disable the passlock anti theft system in my 2002 gmc envoy so I can start and run the darn thing.
The anti theft is in the computer program. You may have to have it reflashed at the dealership.
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Aug 31, 2014 • Cars & Trucks
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1997 Cadillac Deville, 8 cylinder, northstar engine. started w dash was displaying "anti theft - car may not restart" I replaced the BCM, and car will still not start.
bcm has very little to with the anti theft. you need to de active the anit theft
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Dec 03, 2012 • 1997 Cadillac DeVille
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2answers

89 firebird anti theft code won't let car start
If code 53 involves the PASS system for your car, the chip in the key has failed, or the sensor in the lock cylinder, or the control module.
The anti-theft system disables the starter and the fuel injectors. You could bypass those circuits to get the car started.
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Oct 02, 2012 • 1989 Pontiac Firebird
15helpful
2answers

How to remove or bypass the factory installed anti theft vehicle immobilizer.
in the 1996 sunfire GM uses an anti theft lock system. It can be triggered by all sorts of things. In order to relinquish this you must have a key to turn the ignition. These are not coded just plain cut keys. Once you attain this you put the key in and turn the ignition to the ACC position and wait ten minutes (theft lock light will turn off), turn off and take key out. You MUST do this 3 times and then the theft lock will be disarmed.
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May 10, 2009 • 1996 Pontiac Sunfire
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My anti-theft system came on and my key wouldn't come out but it would start and my windows don't roll down and my sunroof doesn't open does that have to do with the anti-theft system

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