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Is there a code for key isn't registering with the bcm

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Take it to the dealer.

Posted on Dec 14, 2014

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Posted on Jan 02, 2017

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Why is my security light coming on in my 03' chevy impala when driving im scared it will stop on me when doin tht


Hard to say why the light comes on , may have a diagnostic trouble code stored in the BCM - body control module ! Do you have a bunch of other key's on the same ring as the vehicle key ?
Passlock™ System
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent system prevents the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the ignition lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM). The message enables the fuel injectors and the crank relay.
The design of the Passlock™ system is to prevent vehicle theft by disabling the engine unless the ignition lock cylinder rotates properly by engaging the correct ignition key. The system is similar in concept to the passkey system. However, the Passlock™ system eliminates the need for a key mounted resistor pellet. The components of the Passlock™ system are as follows:
• The ignition lock cylinder
• The ignition switch
• The Passlock™ sensor
• The body control module (BCM)
• The SECURITY indicator
• The powertrain control module (PCM)
When anyone of these codes set the BCM will turn on the SECURITY light !
DTC B2947
DTC B2948
DTC B2957
DTC B2958
DTC B2960
DTC B3031
DTC B3033
DTC P1626
DTC P1629
DTC P1630
DTC P1631

Your best bet , take it to a qualified repair shop an have it checked !Here are some reasons for the light to come on .
Conditions for Setting the DTC
The BCM detects a short to ground on the Passlock sensor power circuit for 1 second, with the ignition switch in the ACCESSORY, ON, or START position.
The PCM has detected a loss of the state of health serial data message from the theft deterrent system.

May 29, 2017 | Cars & Trucks

1 Answer

How do I override the pass lock bypass on 2004 impala ss?


You can't ! Dealer maybe able to , going into the BCM with factory scan tool an turning it off !
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent system prevents the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the ignition lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM). The message enables the fuel injectors and the crank relay.

May 26, 2017 | Cars & Trucks

1 Answer

I lost my only key to my 2000 gmc jimmy does this require a chip or is it just a regular key


No your vehicle doesn't have a chip key . You can just replace the key and lock cylinder . Without a key to copy ! Or the dealer can cut a key using the Vin #

The Passlock™ sensor is separate from the key and lock cylinder. The key and the lock cylinder work together in order to determine if the proper ignition key was used to start the vehicle.
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previousely learned voltage code. If the codes match, a class 2 message is sent from the BCM to the vehicle control module (VCM)/powertrain control module (PCM). The message enables the fuel injectors.

Feb 07, 2017 | 2000 GMC Jimmy

1 Answer

What most i do when my 2002 chevy avalanche security light keep flashing


Take it to the dealer or a ASE certified repair shop .or go on youtube an check out videos on anti-theft by pass for GM vehicles .There are a few different type's . VATS , pass key 1,2 or three . Being yours is a 2002 model year it isn't the VATS .
Passlock™ System
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM)/vehicle control module (VCM). The message enables the fuel injectors.
The design of the Passlock™ system is to prevent vehicle theft by disabling the engine unless the ignition lock cylinder rotates properly by engaging the correct ignition key. The system is similar in concept to the PASS-Key® system. However, the Passlock™ system eliminates the need for a key mounted resistor pellet. The components of the Passlock™ system are as follows:
• The ignition lock cylinder
• The ignition switch
• The Passlock™ sensor
• The Body control module (BCM)
• The security telltale
• The vehicle/powertrain control module (VCM/PCM)

Feb 18, 2016 | Cars & Trucks

1 Answer

My 2001chevy blazer security light came on while driving went back off after few minutes now car stalls and then want start up until hours later codes show o2sensor misfires tps and security alarm ???


What type scan tool are you using ? or are you using a code reader ? The SECRUITY -anti-theft system codes are stored in the BCM not the PCM !You need a factory scan tool or a professional grade one to check Body Control Module DTC'S -diagnostic trouble codes !
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock?"¢ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM)/vehicle control module (VCM). The message enables the fuel injectors.

Aug 15, 2015 | Cars & Trucks

1 Answer

2006 Equinox. Does the key have a chip in it?


No .

Service Information
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent system is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key allows the lock cylinder to rotate. The cylinder rotation produces an analog voltage code in the Passlock?"¢ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a serial data message is sent from the BCM to the powertrain control module (PCM). The message enables the fuel injector operation.

The design of the Passlock?"¢ system is to prevent vehicle theft by disabling the engine unless the ignition lock cylinder rotates properly by engaging the correct ignition key. The system is similar in concept to the Passkey system. However, the Passlock?"¢ system eliminates the need for any key mounted components. The components of the Passlock?"¢ system are as follows:
The ignition lock cylinder
The ignition switch
The Passlock?"¢ sensor
The BCM
The security indicator
The PCM

Jul 18, 2015 | Chevrolet Chevy Cars & Trucks

1 Answer

What is p16ff code for nissan


all of my research keeps coming back to p1610 for the P16ff Code but I am not sure.
The code P1610 is a problem with the NATS, or better known as system of vehicle immobilizer. And this arose out of the following:
-are using a q-key is not registered or not transmitting the code
- BCM or ECM are evil, and
now is in "locked mode"
you can do something quick:
1. Confirms the code q yields
2. EXIT THE LOCKED MODE. If the code is p1610 continues with the following with a copy of the vehicle key:
(1) -Place the switch to OFF
(2) -Place the switch in ON with the key registered(do not start the engine). Wait 5 seconds
(3) -Returns the switch to the off position. Wait 5 seconds
(4) -Repeat step 2 and 3 two more times (being a total of 3 times) (
5) -Starts the engine
with this test and write us if t worked. If this is not the case there will be q enter to detail by checking with the diagnostic charts and other things.
The other code does not exist or does not comply with the structure of a code

Aug 03, 2014 | 2007 Nissan Tiida 1.6

1 Answer

Bcm failure


You are right.

Sep 09, 2013 | 2005 GMC Canyon

1 Answer

What is a bcm on 2002 chrysler sebring and how do i fix it? What is its function getting code on dash no bus


The BCM is the body control module. Its responsible for functions such as your dashboard display. The no bus means the BCM isn't receiving PCI messages. It can be caused by many things, but have you done any work to the car recently? I had this issue and it turned out to be an exposed wire. But if you haven't done any work on it, you will have to go to the dealer to run diagnostics on it with a DRB-III to find out what is wrong.

Jul 24, 2011 | Chrysler Sebring Cars & Trucks

1 Answer

Need to locate reset button to turn off alarm


There is not a reset button on a Nissan product. If the security light is on solid when spinning the engine over then the security system is in "LOCK MODE" no matter if you use the correct key. If the alarm does not recognize the transponder (key) and it is tried then you will have to register all the keys to that vehicle. You will need to use the Nissan diagnostic tool Consult II or Consult III. You will need the 5 digits off of the BCM and the Nissan ASIST electronic service manual with the decoder feature. That will give the 4 digit code needed for the Consult II or Consult III to allow you to register the keys.

Or you could take it to a Nissan dealer.

Dec 27, 2009 | 2003 Nissan 350Z

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