Question about 2000 Jeep Wrangler

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Problem comunication pcm whit sentry key

When is correct procedure for install pcm used in wrangler 2000 ,need information for comunication sentry whit pcm

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  • Anonymous Mar 21, 2014

    Can't find PCM on 2002 ford f 350

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  • 137 Answers

If you have sentry key on your jeep then it must be taken to a shop that can aacess the key code information to set up the vin and secret key into the pcm before it will stay running.. very few independant car repair shops can access that part of the controller... they will need a tool called the DRBIII .. its a dealer tool.. most dealers will set it up for about an hours shop labor but you will need the jeep towed in to them since it will not run...

but to acswer your question about how to change it its just a mater of disconnection the battery then unpluging the connectors from it and remove the bolts that hold it in place .. to install just rebolt it and then reconnect the connectors to it then reconnect the battery.. but with out skim set up it will not run... also not some dealers will tell you they cannot set up your vin and key info in the used contoller but it CAN be done...

Posted on Feb 01, 2009

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Where the ecm/pcm located on a chevy avalanche 2002


The pcm is just under the battery on the left side of the engine compartment. The PCM need to be calibrated to the truck and motor. If you just put it in the motor may not start. Read over the information I have attached before you do this. Ken Powertrain Control Module Replacement Service of the powertrain control module (PCM) should consist of either replacement of the PCM or electrically erasable programmable read only memory (EEPROM) programming. If diagnostic procedures call for the PCM to be replaced, the replacement PCM should be checked to ensure that the correct part is being used. If the correct part is being used, remove the faulty PCM and install the new service PCM.
Important: To prevent internal PCM damage, the ignition must be OFF when disconnecting or reconnecting power to the PCM. For example, when working with a battery cable, PCM pigtail, PCM fuse, or jumper cables. • Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM module connector gaskets when diagnosing or replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the PCM. • The replacement PCM must be programmed.

Removal Procedure

    Important: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.

Nov 30, 2016 | Cars & Trucks

1 Answer

Wont start because of anti theft system it used to start for a short time now just turns over


my guess is that you posted all these related posts because you

never read the FSM chapters yet? in immo.>?

read chapter 8Q yet? ill post excerpts, and you can learn how it works?

Guess 2 , you are trying to fix it SCAN tool free? that will never happen, (get one, ? Innova 3160)

Connect the scan tool, crank for 5 seconds, behold , DTC errors

see those. post those and get help, or its all IMPOSSIBLE !!!

yours is KJ 06







Quote:

SENTRY KEY IMMOBILIZER SYSTEM

The Sentry Key Immobilizer System (SKIS) is available as a factory-installed option on this vehicle. Vehicles

equipped with the Vehicle Theft Alarm (VTA) are also equipped with SKIS. The SKIS provides passive vehicle protection

by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition

lock cylinder.

The SKIS includes the following major components, which are described in further detail elsewhere in this service

information:

SENTRY KEY IMMOBILIZER SYSTEM

The Sentry Key Immobilizer System (SKIS) is designed to provide passive protection against unauthorized vehicle

use by disabling the engine after about two seconds of running, whenever any method other than a valid Sentry Key

is used to start the vehicle. The SKIS is considered a passive protection system because it is always active when

the ignition system is energized and does not require any customer intervention. The SKIS uses Radio Frequency

(RF) communication to obtain confirmation that the key in the ignition switch is a valid key for operating the vehicle.

The microprocessor-based SKIS hardware and software also uses electronic messages to communicate with other

electronic modules in the vehicle over the Programmable Communications Interface (PCI) data bus. (Refer to 8 -

ELECTRICAL/ELECTRONIC CONTROL MODULES/COMMUNICATION - OPERATION).

Pre-programmed Sentry Key transponders are provided with the vehicle from the factory. Each Sentry REmote Entry

Module (SKREEM) will recognize a maximum of eight Sentry Keys. If the customer would like additional keys other

than those provided with the vehicle, they may be purchased from any authorized dealer. These additional keys

must be programmed to the SKREEM in the vehicle in order for the system to recognize them as valid keys. This

can be done by the dealer using a diagnostic scan tool or, if Customer Learn programming is an available SKIS

feature in the market where the vehicle was purchased, the customer can program the additional keys, as long as

at least two valid Sentry Keys are already available. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY -

STANDARD PROCEDURE - TRANSPONDER PROGRAMMING).

The SKREEM performs a self-test of the SKIS each time the ignition switch is turned to the ON position, and will

store fault information in the form of a Diagnostic Trouble Code (DTC) if a system malfunction is detected. The SKIS

can be diagnosed, and any stored DTC can be retrieved using a diagnostic scan tool. Refer to the appropriate

diagnostic information



page 68

SENTRY KEY IMMOBILIZER SYSTEM

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental

restraint system before attempting any steering wheel, steering column, airbag, occupant classification system,

seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect

and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge

before performing further diagnosis or service. This is the only sure way to disable the supplemental

restraint system. Failure to take the proper precautions could result in accidental airbag deployment.

The hard wired Sentry Key Immobilizer System (SKIS) components and circuits may be diagnosed and tested using

conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information

includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention,

connector pin-out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods may not prove conclusive in the diagnosis of the Sentry Key REmote

Entry Module (SKREEM), the ElectroMechanical Instrument Cluster (EMIC), the Powertrain Control Module (PCM),

the Programmable Communications Interface (PCI) data bus, or the electronic message inputs used to provide the

electronic features of the SKIS. The most reliable, efficient, and accurate means to diagnose the SKREEM, the

EMIC, the PCM, the CAN data bus, and the electronic message inputs for the SKIS requires the use of a diagnostic

scan tool. Refer to the appropriate diagnostic informatio

Apr 27, 2015 | 2006 Jeep Liberty

1 Answer

Reset the ignition anti theft on my 2004 dodge stratus


If you are referring to the factory immobilizer, there is no resetting to be done.

The Sentry Key Immobilizer System (SKIS ) is designed to prevent unauthorized vehicle operation. The system consists of a Sentry Key Immobilizer Module (SKIM ), ignition key(S) equipped with a transponder chip and PCM. When the ignition switch is turned on, the SKIM interrogates the ignition key. If the ignition key is Valid or Invalid, the SKIM sends a PCI Bus message to the PCM indicating ignition key status. Upon receiving this message the PCM will terminate engine operation, or allow the engine to continue to operate.


For all faults except transponder faults and VTSS LED remains on steady. In the event of a transponder fault the LED flashes at a rate of 1 Hz (once per second). If a fault is present the LED will remain on or flashing for the complete ignition cycle. If a fault is stored in SKIM memory which prevents the system from operating properly, the PCM will allow the engine to start and run (for 2 seconds ) up to six times. After the sixth attempt, the PCM disables the starter relay until the fault is corrected.

Aug 14, 2013 | 2004 Dodge Stratus

1 Answer

P1685


Hi Eugenius:
There were a few bulletins about a no start for that year. Sometimes it is low fuel pressure and on some there is an update for the computer programming. Here is one of them

PCM - Engine No Start Condition Notes

NUMBER: 18-13-99
GROUP: Vehicle Performance
DATE: June 18, 1999
SUBJECT: Engine No-Start
OVERVIEW: This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) (calibration change 99 CaI 18).

MODELS: 1999 (WJ) Grand Cherokee
NOTE :THIS INFORMATION APPLIES TO VEHICLES BUILT BEFORE APRIL 27, 1999 (MDH 0427XX) AND NOT EQUIPPED WITH THE SENTRY KEY IMMOBILIZER (SKIM) SYSTEM.

SYMPTOM/CONDITION: An engine no-start or an engine crank-start-die condition may exist with vehicles not equipped with SKIM. Diagnostic Trouble Codes P1685 "SKIM Invalid Key" and/or P1686 "No SKIM BUS Messages Received" may be present in the PCM.

This condition may be due to erroneously learning of SKIM by the PCM. In most cases, the vehicle will start once the vehicle battery has been disconnected to reset the PCM.

DIAGNOSIS: Using the Mopar Diagnostic System (MDS/MDS2) and or the Diagnostic Scan Tool (DRB III R ) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair Procedure.

NOTE :WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE REPLACEMENT CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO UPDATE REPLACED CONTROLLERS AS NECESSARY.

PARTS REQUIRED: 01 04669020 Label, Authorized Software Update 1 04275086 Label, Authorized Modification

EQUIPMENT REQUIRED: 01 CH6OOO Scan Tool (DRB Ill) 1 CH7035 General Purpose Interface Bus Cable (GPIB) 1 CH7OOO/7001 J1962 Cable 1 MDS1 or MDS2

NOTE :THE MDS1IMDS2 AND DRB Ill ARE REQUIRED TO PERFORM PART OF THIS REPAIR. IF USING THE MDS1 AND DRB Ill THE MDS MUST BE OPERATING AT RELEASE 21 OR HIGHER AND TIL CD RELEASE 1186 OR HIGHER MUST BE INSTALLED. IF USING THE MDS2 AND THE DRB III(R) THE SYSTEM MUST BE OPERATING AT CIS CD2035 OR HIGHER.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Nov 17, 2011 | Jeep Grand Cherokee Cars & Trucks

2 Answers

1999 jeep showing code p1686


P1686 is a SKIM (Sentry Key Immobilizer Module) no signal code. The keys have tiny chips in them that have to match the SKIM module for that vehicle, if they dont match then the engine will stop running after a few seconds. This is to keep theives from making a key and driving away with you vehicle.
First of all, do you have 2 keys? If so try the other one, if it works, then the other sentry key (the one that didn't work before) has bit the dust. If both do not work and both seem to have same symptoms, then it is quite possibly the module under the sterering wheel cover attached to back of ignition switch which reads the sentry key and if it gets signal from sentry key, then it sends a signal to pcm allowing start up to complete with no shutdown. If this unit is bad, unfortunuately just replacing it is no help, because after replacement a DEALER must then program both the unit and your keys. Make sure you give the dealer both keys, as both have to be reprogrammed to the new unit, if only one is done, the other will not work.

Apr 24, 2011 | 1999 Jeep Cherokee

1 Answer

Just replaced the pcm....didnt have it flashed yet but it starts perfectly idles for two seconds then shuts off


Your keys and key codes (sentry key) have not been programmed. You have a SKIM (sentry key immobilizer module) that reads the computer chip in your ignition key. The SKIM module and the PCM communicate together to verify that the correct key is being used in order to allow the engine to keep running. Basically, the new PCM does not yet know the security code data that is stored in the SKIM. You have to have a well-equipped repair shop or dealership program/reprogram/flash the new PCM and transfer the security data from the SKIM to your new PCM. Yes, it's a pain, but a necessary one in your case.

Hope this helps and good luck!

Sep 08, 2010 | Jeep Grand Cherokee Cars & Trucks

1 Answer

I HAVE REPLACED THE PCM COMPUTER, ACTUALLY, I SENT MINE IN FOR REPAIR. THEY "FLASHED" IT, I PROVIDED VIN, AND ALL OTHER INFO REQUESTED. I REINSTALLED IT, CALLED LOCKSMITH TO "MATE" THE KEY AFTER IT...


SECTION 419-01: Anti-Theft — PATS 2000 F-150 Workshop Manual
DESCRIPTION AND OPERATION Anti-Theft —PATS The passive anti-theft system (PATS) contains the following components:
  • theft indicator
  • encoded ignition key
  • transceiver module
  • instrument cluster
  • powertrain control module (PCM)
  • standard corporate protocol (SCP) communication network
The PATS uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user. This system is known as SecuriLock® in North America, Safeguard® in the U.K. and PATS in continental Europe. This information can be found in owners literature.
The PATS uses a specially encoded ignition key. Each encoded ignition key contains a permanently installed electronic device called a transponder. Each transponder contains a unique electronic identification code, with over 72 million billion combinations.
Each encoded ignition key must be programmed into the vehicle's instrument cluster (the instrument cluster is also known as a hybrid electronic cluster [HEC]), before it can be used to start the engine. There are special diagnostic procedures outlined in the workshop manual that must be carried out if new encoded ignition keys are to be installed.
The encoded key is larger than a traditional ignition key. The key does not require batteries and should last the life of the vehicle.
The transceiver module communicates with the encoded ignition key. This module is located behind the steering column shroud and contains an antenna connected to a small electronics module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the instrument cluster.
The control functions are contained in the instrument cluster. This module carries out all of the PATS functions such as receiving the identification code from the encoded ignition key and controlling engine enable. The instrument cluster initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.
The PATS uses the PCM to enable or disable the engine. The instrument cluster communicates with the PCM over the SCP network in order to enable engine operation. The instrument cluster and the PCM use sophisticated messages in order to prevent a theft. The instrument cluster and the PCM share security data (when first installed together) that makes them a matched pair. After this security data sharing, these modules will not function in other vehicles. The shared PCM ID is remembered even if the battery is disconnected. The instrument cluster also stores the vehicle's key identification code even if the battery is disconnected. There are special diagnostic procedures outlined in this workshop manual that may be carried out if either a new instrument cluster or PCM needs to be installed.
All elements of PATS must be functional before the engine is allowed to start. If any of the components are not working correctly, the vehicle will not start.
PATS uses a visual theft indicator. This indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS problem, this indicator will either flash rapidly or glow steadily (for more than three seconds) when the ignition switch is turned to RUN or START. PATS also "blips" the theft indicator every two seconds at ignition OFF to act as a visual theft deterrent.
The PATS is not compatible with aftermarket remote start systems, which allow the vehicle to be started from outside the vehicle. These systems may reduce the vehicle security level, and also may cause no-start issues. Remote start systems must be removed before investigation of PATS-related no-start issues.


-------------------------------------------------------------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Ignition lock cylinder
  • Encoded ignition key (PATS key)
  • Use of non-encoded ignition key (key without the molded plastic head, non-PAT key)
  • Use of a non-programmed encoded ignition key
  • Central junction box:
    • Fuse 2 (5A)
    • Fuse 6 (5A)
    • Fuse 30 (30A)
  • PATS transceiver
  • Connectors
  • Ignition switch

Mar 11, 2010 | Ford F-150 Cars & Trucks

1 Answer

2000 neon check engine light is on


P1685 Skim Invalid Key.

The Sentry Key Immobilizer Module contains a Radio Frequency (RF) transceiver and a microprocessor. The SKIM transmits RF signals to, and receives RF signals from the Sentry Key transponder through a tuned antenna ring integral to the SKIM housing. When the ignition switch is turned to the On position, the SKIM transmits an RF signal to the transponder in the ignition key. The SKIM then waits for an RF signal response from the transponder. If the response received identifies the key as valid, the SKIM sends a valid key message to the PCM over the PCI data bus. If the response received identifies the key as invalid, or if no response is received from the key transponder, the SKIM sends an invalid key message to the PCM. The PCM will enable or disable engine operation based upon the status of the SKIM messages.

you can look it up here:
http://www.engine-light-help.com/check-engine-light-domestic.html

Sep 13, 2009 | 2001 Plymouth Neon

2 Answers

Pcm trouble codes.


You can either use a auto scan tool to clear the code's, or you can unplug the battery negative cable, if you have a anti-theft system you may have problem's after disconnecting the battery?

Apr 21, 2009 | 2003 Jeep Wrangler

3 Answers

Remote keyless entry


“CUSTOMER LEARN” MODE This feature is only available on domestic vehicles or those which have a U.S. country code designator. This procedure requires access to at least two valid Sentry Keys. If two valid Sentry Keys are not available, Sentry Key programming will require the use of a scan tool.
The steps required to program Sentry Keys with two valid Sentry Keys follows:
1. Obtain the blank Sentry Key(s) that need to be programmed. Cut the keys to match the ignition lock cylinder mechanical key codes. 2. Insert one of the two valid Sentry Keys into the ignition switch and turn the ignition switch to the ON position. 3. After the ignition switch has been in the ON position for longer than three seconds, but no more than fifteen seconds, cycle the ignition switch back to the OFF position. Replace the first valid Sentry Key in the ignition lock cylinder with the second valid Sentry Key and turn the ignition switch back to the ON position. The second valid Sentry Key must be inserted within 15 seconds of removing the first valid Sentry key. 4. About ten seconds after the completion of Step #3 , the indicator light will start to flash and a single audible chime tone will sound to indicate that the system has entered the "Customer Learn" programming mode. 5. Within sixty seconds of entering the "Customer Learn" programming mode, turn the ignition switch to the OFF position, replace the valid Sentry Key with a blank Sentry Key transponder, and turn the ignition switch back to the ON position. 6. About ten seconds after the completion of Step #5 , a single audible chime tone will sound and the indicator light will stop flashing and stay on solid for three seconds and then turn off to indicate that the blank Sentry Key has been successfully programmed. The SKREES will immediately exit the "Customer Learn" programming mode and the vehicle may be started using the newly programmed Sentry Key.

NOTE: The Remote Keyless Entry (RKE) Transmitter will also be programmed during this procedure. These steps must be completed in their entirety for each additional Sentry Key to be programmed. If any of the above steps are not completed in the given sequence, or within the allotted time, the SKREES will exit the "Customer Learn" programming mode and the programming will be unsuccessful. The SKREES will also automatically exit the "Customer Learn" programming mode if:
  1. It sees a non-blank Sentry Key when it should see a blank.
  2. If it has already programmed four (4) valid Sentry Keys.
  3. If the ignition switch is turned to the OFF position for more than about fifty (50) seconds.

NOTE: If you attempt to start the vehicle while in “Customer Learn” mode (LED flashing), the vehicle will behave as though an invalid key is being used (i.e. the engine will stall after two (2) seconds of running). No faults will be logged.
NOTE: Once a Sentry Key has been programmed to a particular vehicle, it cannot be used on any other vehicle.

Jul 16, 2008 | 2007 Dodge Caravan SXT Minivan New Cars

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