Question about Saturn SL1
I have a 2009 Hummer H3T Alpha. I have just noticed that when I push the lock button on my key fob and all the doors lock, the little security symbol flashes on the speedometer. I have never seen this before. Is this normal and was just not working in the past or is there something I should have checked? Thanks for any info.
Posted on Jul 12, 2011
Hello, Try this: Get in car, turn the key to start, when it don't start let key come back to run (do not turn off) The security light should be blinking, let car set for about ten minutes or until security light stays on steady at that time turn key off for 10 seconds then turn back on (do not go to start) security light will be blinking again wait 10 minutes and security light should go out. Turn key off, wait 10 seconds . Turn key on (do not go to start) security light will be blinking again, wait 10 minuets and security light will go out. AT THIS TIME TURN KEY OFF FOR 10 SECONDS THEN START THE CAR.
Posted on Sep 14, 2010
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Posted on Jan 31, 2012
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Posted on Jan 02, 2017
Tips for a great answer:
Feb 05, 2017 | 2004 Pontiac Sunfire
Nov 13, 2016 | 1998 Chevrolet S-10 Pickup
The ignition switch
The Passlock?"¢ sensor
The security indicator
Jun 24, 2016 | 2006 Pontiac Torrent
The ignition switch
The passlock?"¢ sensor
The Body control module (BCM)
The security telltale
The vehicle/powertrain control module (VCM/PCM)
The ignition lock cylinder is located at the upper right side of the steering column. The Passlock?"¢ sensor is in the steering column. 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.
In the event of an open Class 2 serial data line between the BCM and the VCM/PCM, the vehicle will become fail-enabled if the VCM/PCM has already received the password from the BCM for that ignition cycle (the engine is running). In this event, the following conditions occur:
The security telltale will be ON continuously.
The VCM/PCM will become fail-enabled for future ignition cycles.
If a failure in the Class 2 serial data line occurs before the ignition cycle, when the VCM/PCM is not fail-enabled, the following conditions occur:
The VCM/PCM will never receive a valid password in order to enable the fuel injectors.
The vehicle will not start.
The lock cylinder and the visible key insert portion of the ignition switch are located at the upper right side of the steering column. The electrical switching portion of the assembly is separate from the key and lock cylinder. The electrical switch portion is hidden inside the steering column. The electrical switch portion and the key and lock cylinder synchronize and work in conjunction through the action of the mechanical assembly between the 2 parts.
The passlock?"¢ sensor is inside the upper right side of the steering column. The passlock?"¢ 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?"¢ sensor by placing a large magnet around that area of the steering column. There is a tamper resistor inside the passlock?"¢ sensor in order to help prevent tamper to the system. Passlock?"¢ 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?"¢ sensor will generate a unique passlock?"¢ code. All 10 combinations of the passlock?"¢ sensor have the same part number. However, you cannot simply replace the passlock?"¢ sensor and expect the system to operate properly. Always start by performing the Diagnostic System Check first and following the instructions.
The SECURITY telltale appears on the message center inside the instrument cluster. If the SECURITY telltale flashes or if the SECURITY telltale lights continuously during the vehicle operation, refer to the system diagnosis.
Fuel Lockout Cycle
The Passlock?"¢ 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 RUN position to the OFF position.
The Passlock?"¢ system uses the lockout cycle in order to synchronize all of the Passlock?"¢ components when any Passlock?"¢ related part is changed. The Passlock?"¢ system requires 3 consecutive lockout cycles in order to complete the 30 minute learn procedure for a changed component.
Mar 10, 2015 | Cars & Trucks
The ignition lock cylinder case, including the Passlock?"¢ sensor
The ignition switch
The body control module (BCM)
The security indicator on the instrument cluster
The powertrain control module (PCM)
Ignition Lock Cylinder Case, Including the Passlock?"¢ Sensor
The ignition lock cylinder fits inside the ignition lock cylinder case and operates the ignition switch when turned by a key with the proper mechanical cut. When the ignition key is used to turn the ignition lock cylinder to crank, start, a magnet on the lock cylinder passes close to the Passlock?"¢ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock?"¢ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle.
If a magnet from outside of the ignition lock cylinder case is used to attempt to steal the vehicle, the tamper hall effect sensor will be activated. This completes a circuit from the security sensor signal circuit through a tamper resistor to the security sensor low reference circuit bypassing the security resistor. If the ignition switch is forced to rotate without the correct key, or if the ignition lock cylinder is removed by force, the Passlock?"¢ sensor will be damaged and will not operate.
Feb 22, 2015 | 2006 Chevrolet Trailblazer
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
Aug 27, 2014 | 1999 Chevrolet Blazer
Jul 20, 2014 | 2003 GMC Envoy
May 14, 2010 | 2001 Oldsmobile Alero
Oct 12, 2009 | 2006 GMC Envoy
Nov 20, 2017 | Saturn Cars & Trucks
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