How does the theft deterrent control module work?

The transponder transmits a unique signature to the theft deterrent control module. If the key signature transmitted is acceptable to the theft deterrent control module, the theft deterrent control module will transmit fuel enable password to the PCM. If the fuel enable password is correct, the PCM will start the vehicle.

How do I relearn GM theft deterrent system?

If the key signature transmitted is acceptable to the theft deterrent control module, the theft deterrent control module will transmit fuel enable password to the PCM. If the fuel enable password is correct, the PCM will start the vehicle. To perform a relearn on a Passkey III system, make sure there is a fully charged battery in the vehicle.

What are the different types of GM thieves deterrent systems?

GM vehicles have three types of Vehicle Thief Deterrent (VTD) systems, each requiring their own set of relearn procedures. Unless these procedures are correctly performed the vehicle will not start after the PCM has been replaced. The three systems are: Vehicle Anti-Theft System (VATS), Passkey, & Passkey II – resistive chip ignition key

When to turn off the anti theft system?

When you are inside the car. Apply this trick when you have access to the car’s interior and the ‘Theft System’ light on the dashboard is ON. Insert the key in the ignition slot and turn it to the right only slightly. Keep it in that position for 10 minutes or a little more. It is likely to turn off the light and start the car.

How to relearn the passkey II security module?

To perform a relearn on a Passkey II system, make sure there is a fully charged battery in the vehicle. The battery will be used for 30 minutes without the alternator available for charging. Connect a battery charger to the battery to ensure power is available while programming.

When to replace a Body Control Module ( BCM )?

Because the BCM is the one handling a lot of different functions in the car, it is also inevitable for all those functions to stop working when the BCM does get damaged. When this happens, a replacement may be the best resort for you. Still, the repair cost of the control module also depends on the kind of vehicle that you drive.

When do you Know Your BCM is not in good condition?

You will know that your BCM is not in good condition if you experience a no crank or no start condition. This happens as the Body Control Module communicates with the other module. What does a body control module do? In the first parts of this article, we have discussed the functions under the Body control module.

How to do a Relearn on a PassLock system?

To perform a relearn on a Passlock system, make sure there is a fully charged battery in the vehicle. The battery will be used for 30 minutes without the alternator available for charging. Connect a battery charger to the battery to ensure power is available while programming.

When do I need to relearn the security key?

Start the If the vehicle starts and runs normally, the relearn is complete. If additional keys need to be relearned: Insert the next key to be Turn the key to the “ON” position within 10 seconds of removing the previously used key. Wait for security light to turn It should happen fairly quickly.

Why is my anti theft system not working?

It is possible that the system can trigger the car alarm or prevent the engine from running without any apparent reason. You have to shut it off if it is not working properly. The car won’t return to normal operation unless you fix the issue of anti theft device car wont start. How to disengage anti-theft system? These tricks will help:

How does the passkey 3 anti theft system work?

The Passkey III anti-theft system uses a transponder inside the head of the ignition key. The exciter inside the ignition lock cylinder energizes this transponder when the ignition switch is turned on. The transponder transmits a unique signature to the theft deterrent control module.

How does the anti theft system work on a car?

Its mechanism involves an electrical circuit that disconnects in the event of a suspicious activity. It interrupts the power supply in a fashion that your car won’t start or even die anytime soon. Sometimes, the system can be triggered without any threat and immobilize the engine.

When does anti theft system lock the steering wheel?

Sometimes, the anti-theft system locks the steering wheel and does not let the key turn inside the slot. This annoying problem is mostly exclusive to Hondas. It mainly happens when you move the steering wheel after turning off the car. It locks the wheel in that position and does not let you move it next time you try to switch on the car.