Question about 1999 Chevrolet Cavalier

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Car starts and dies almost immediately

Recently had ignition switch replaced by a licensed mechanic and he reset the passlock info. Car started fine for about a week. Drove it about 400 miles from home, turned off. Now when I turn key it starts and dies almost immediately. The theft lite illuminates so I tried everything from disconnecting battery leads and pulling fuses to no avail. Need Passlock schematics, help and a lot of luck.

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Turn key to on position for ten mins then your theft system light should turn off then turn key to off postion and then try to start car. Should work if not go to www.j-body.org and go to forums and go to maitnance

Posted on Nov 01, 2009

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I had a Ford F150 New at dealers, It did the same thing, come to find out the dealer had given me the wrong key, and the chip did not match the ignition system. Maybe your chip has malfunctioned.

Posted on Jul 29, 2009

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96 buick skylark starts & stalls, theft light on not flashing. Dissconnected map sensor still starts & stalls. No chip in key, changed fuel filter. whats goin on here?


This is pass lock antitheft system not pass key, pass key system is found on newer gm vehicles and has a transponder in the key. Pass lock system has a hall sensor on the lock cylinder.
System Operation
If the mechanical key is not used to start the vehicle, the PASSLOCK?"¢ system is designed to prevent vehicle operation. The mechanical key, in normal operation, will turn the PASSLOCK?"¢ lock cylinder. The PASSLOCK?"¢ lock cylinder will relay a Resistance Code (R-Code) to the instrument cluster. Within a preset time window started from an ignition switch input and will send a coded password to the powertrain control module (PCM). The instrument cluster will determine the validity of the R-Code. For the fuel injectors to operate normally, the powertrain control module (PCM) receives the correct code
Passlock System
Disabling the engine unless the PASSLOCK?"¢ lock cylinder is correctly engaged by a mechanical key. The PASSLOCK?"¢ system is designed to prevent vehicle theft. This system is similar in concept to the Passkey system. The PASSLOCK?"¢ eliminates the need for a key mounted resistor pellet. The components of this system are as follows:
?€¢
PASSLOCK?"¢ lock cylinder


?€¢
Ignition switch


?€¢
Instrument Cluster and Powertrain control module (PCM)


If the theft light is on there is a problem and a code set. You can try to do reset . Turn the key on , don't try an start the car . Let key on for 10 min. till the light goes out, if it goes out turn ignition off an wait a couple of min. then start the car

Dec 31, 2014 | 1996 Buick Skylark

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Car will not start just clicks


try checking the connections at the battery if u haven't already! Is your check engine light on?

Aug 29, 2013 | 2003 Saturn ION

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Replaced ignition car wont start


Here is a link that can help you with the bypassing of your Passlock antitheft system. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Mar 25, 2012 | 2000 Oldsmobile Alero

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Hello. I have a 2004 Monte Carlo SS. Just recently, I have experienced my car not starting. I have had ONSTAR do a Diagnostic test from my car, while I am in it, and it comes back fine. What happens is, I...


Read the following paragraph from GM, this will give you some insight on the passlock system on your vehicle.

The electrical switching portion of the ignition lock cylinder assembly is separate from the key and lock cylinder. The electrical switch portion and the key and lock cylinder synchronize and work in conjunction through the action of the mechanical assembly between the two components.

PASSLOCK(TM) SENSOR
The Passlock(TM) sensor contains 2 hall effect sensors. The tamper hall effect sensor is on the top. The security hall effect sensor is under the tamper hall effect sensor. Both of the hall effect sensors monitor the magnet of the lock cylinder through an opening. The tamper hall effect sensor is physically placed on top of the security hall effect sensor. This arrangement enables the tamper hall effect sensor to engage first if an intruder attempts to bypass the Passlock(TM) sensor by placing a large magnet around that area of the steering column. There is a tamper resistor inside the Passlock(TM) sensor in order to help prevent tamper to the system. Passlock(TM) equipped vehicles have a selection of 10 different security resistors ranging from 0.5K ohms up to 13.6K ohms . Installing one of the security resistors inside the Passlock(TM) sensor will generate a unique Passlock(TM) code. All 10 combinations of the Passlock(TM) sensor have the same part number.

BODY CONTROL MODULE
The body control module (BCM) contains the theft deterrent system logic. The BCM reads the Passlock(TM) data from the Passlock(TM) sensor. If the Passlock(TM) data is correct, the BCM will send a class 2 message to the PCM to enable the fuel injectors and crank relay.

During the tamper mode the vehicle may start. The vehicle will then stall. If the BCM receives the wrong Passlock(TM) data, the VTD system will immediately go into the tamper mode. The tamper mode will lock-out the vehicle fuel injectors and crank relay for 10 minutes . The SECURITY indicator will flash while the VTD is in the tamper mode.

If the Passlock(TM) sensor sends a correct password to the BCM when the ignition is in the ON position, the BCM will send a fuel enable and crank relay enable signal to the PCM.

SECURITY INDICATOR
The SECURITY indicator appears on the message center inside the instrument cluster. If the SECURITY indicator flashes or if the SECURITY indicator lights continuously during vehicle operation, refer to the system diagnosis.

POWERTRAIN CONTROL MODULE
The PCM communicates with the BCM over the Class 2 serial data line. When the BCM determines an incorrect password, it sends a Class 2 serial data password to the PCM in order to disable the crank relay and fuel injection system. If the BCM receives the expected voltage from the Passlock(TM) sensor, the BCM sends a class 2 serial data password to the PCM in order to enable the crank relay and fuel injection system. The PCM then allows the vehicle to start normally.

FUEL LOCKOUT CYCLE
The Passlock(TM) system has a lockout cycle of approximately 10 minutes . Once the vehicle is in the lockout cycle, the vehicle remains in the lockout cycle for 10 minutes , even if the ignition switch is turned from the ON position to the OFF position.

The Passlock(TM) system uses the lockout cycle in order to synchronize all of the Passlock(TM) components when any Passlock(TM) related part is replaced. The Passlock(TM) system requires 3 consecutive lockout cycles in order to complete the 30 minute learn procedure for a changed component.

CHANGING THE PASSLOCK(TM) COMPONENTS
The design of the Passlock(TM) system is to prevent theft even if the various theft deterrent parts change. The parts that can no longer be changed without the possibility of going into a tamper mode are:

* The Passlock(TM) sensor
* The BCM
* The PCM

If you replace any of these parts the vehicle may not start for 10 minutes . This is the long tamper mode. If this occurs, the system must go through a long tamper mode cycle. During this time the SECURITY indicator will be flashing for the full 10 minutes and DTC B3031 will be set. The BCM and the PCM require the full 10 minutes in order to complete a learn cycle. The ignition switch must remain in the ON position until the SECURITY indicator stops flashing. You will need to repeat the cycle if the ignition switch does not remain in the ON position. When replacing any of the above parts, perform the Programming Theft Deterrent System Components procedure.

The design of the Passlock(TM) system is to prevent the vehicle operation if the proper ignition key is not used in order to start the vehicle. The mechanical key, in normal operation, will turn the ignition lock cylinder. The Passlock(TM) sensor monitoring the position of the lock cylinder will relay the Passlock(TM) data to the body control module (BCM). The BCM will determine the validity of the Passlock(TM) data. The BCM will send a password to the powertrain control module (PCM). When the PCM receives the correct password the PCM allows the crank relay and fuel injectors to operate normally. The Passlock(TM) system requires the PCM and the BCM to communicate the various functions in order to operate. These functions transmit over the class 2 serial data line. For an explanation of the class 2 serial data description and operation refer to Data Link Communications Description and Operation in Data Link Communications.

Jul 19, 2011 | 2003 Chevrolet Monte Carlo

2 Answers

I have a 2000 monte carlo ss 3800 series. Sometimes the security light comes on and car will not start. When security light is not on, car always starts.Any ideas?


The passlock is having issues try this procedure and see if it helps. If it does not the passlock and ignition tumbler may need replaced.

PASSKEY LOCKOUT RESET ALL GM CARS 1999 AND UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the PASSKEY system to recognize your key
.

Jan 12, 2011 | 2000 Chevrolet Monte Carlo

2 Answers

The car fires but stops immediately


I had a problem with a 97 Achieva recently.Someone else replaced the PCM/ignition switch and passlock sensor.I replaced the ICP.Engine would turn over but wouldn't start and the security lamp was dim and flashing and then it would go solid.I tried the wait 10 minutes thing but,the light would never go off! I put the original passlock sensor back onto the lock cylinder. But this is what fixed the problem.I cleaned the contacts on the black wires and green on the ignition switch with tv tuner cleaner! After I cleaned those contacts the security light was flashing brightly.So I turned the key to run and left it there.After a few minutes it stayed on solid.I waited about 10 minutes but the light never went out.So I turned off the switch and then tried starting.It started right up and the security lamp flashed and then went off.Has started every time since.Note:I also scraped the pins that I cleaned with the cleaner with a knife.

Nov 11, 2009 | 1997 Oldsmobile Achieva

3 Answers

My battery in my car kept dying so my boyfriend had to go buy a new one he took the old battery out and was running the car on the alternator because it wouldn't do anything with that old battery in it. He...


Sounds like the alternator isnt charging the battery to me. Try getting a Ohm/Volt meter and testing the lines that go to the alternator. If the show any kind of voltage then all should be good, if not then you have to trace the wire back to the battery fuse block and try on both side of the fusable link. If you are getting a reading on the battery side of the link but not the other side you will have to have the wire replaced or run a new one. As far as it not starting now, from replacing the battery I am not 100% sure. I think that his uncle is correct and you would have to reset the security system, the mechanic should know how to do that.

Nov 04, 2009 | 2006 Pontiac G6

1 Answer

Car running fine. Has 160K miles. Just cuts out for no reason. Pull over starts immediately first time and off we go. Gas filter clogged? The only code P1457 was for a vapor leak. We reset that and now...


does it cut out while driving?? If it cuts out while driving does the speedometer drop to zero even if the car is moving?? try shaking the key while the engine is started and the vehicle is in park...car should die?? If yes is your answer to any of these questions, its a faulty ignition switch. There is a recall for this, call your honda dealer for info and possible replacement!! hopefully this helps

Jul 13, 2009 | 1999 Acura TL

1 Answer

2005 ignition switch


Good day;
The following is the removal of the switch
1. remove the steering column trim covers.
2. disconnect the ignition switch harness connector.
3. turn the switch to the run position

IMPORTANT THE IGNITION SWITCH MUST BE IN THE RUN POSITION DURING REMOVAL IN ORDER TO AVOID DAMAGE TO THE IGNITION SWITCH.

4. remove the switch screws
5. remove the ignition switch from the steering column

if the ignition switch is replaced and a learn procedure is not performed the engine will crank but not start or will start and stall immediately.

30 minute learn procedure
1. turn ON the ignition with the engine OFF
2. attempt to start the engine then release the key to ON. the vehicle will not start
3. observe the SECURITY telltale. after approx 10 min the telltale will turn OFF
4. turn OFF the ignition and wait 5 seconds
5 repeat steps 1-4 two more times for a total of 3 cycles (30 min) the vehicle is now ready to relearn the PASSLOCK sensor data code and or passwords on the next ignition switch transition from OFF to CRANK.

IMPORTANT: THE VEHICLE LEARNS THE PASSLOCK SENSOR DATA CODE AND OR PASSWORD ON THE NEXT IGNITION SWITCH TRANSITION FROM OFF TO CRANK YOU MUST TURN THE IGNITION OFF BEFORE ATTEMPTING TO START THE VEHICLE.

6.start the vehicle the vehicle has now learned the passlock and or password
7. if you have a scan tool clear any codes if needed or disconnect the battery for 30 sec. the history DTC will self clear after 100 ignition cycles.

hope this helps

Cheers

Jul 13, 2009 | 2008 Chevrolet Cobalt

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