PROGRAMMING PASS-KEY III - Ready Remote

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PROGRAMMING PASS-KEY III - Ready Remote

Installation NotesInstallation Notes- Document #147 - Sheet 1 of 2Programming Additional KeysGM PASS-KEY IIIPass-Key III is designed to prevent vehicle theft by disabling the engine unless an ignitionkey with a specific electrical value is used in the ignition key lock cylinder. When theignition key is inserted in ignition cylinder wire coils (antenna) surrounding the ignitioncylinder energize a transponder pellet inside plastic portion of ignition key. The transpondertransmits a unique value by radio frequency back to the coil in the Pass-Key III modulethat surronds the ignition lock cylinder. When the Pass-Key III module detects voltage inRUN or START position it measures the transponder value that it receives from the coil(antenna). If the value is valid the module will send an enable message to the PowertrainControl Module (PCM). If the value is not valid the module will send a disable message tothe PCM, causing the fuel system and starter relay shut off for about 3 minutes, even ifrestarting is attempted with the correct key. The password between the module and PCMis unique to each vehicle, preventing theft by replacing module or PCM. If the transponderin the key is damaged or missing the module will send a disable message, but the 3minute timer is not activated. System compoments include: the ignition key, the ignitionkey lock cylinder, the PASS-KEY III decoder module, the starter disbale relay, and thePowertrain Control Module (PCM). Two different keys are available-- A Black master keythat will start the vehicle and lock/unlock all doors, trunk compartments and trunk switchlock out, and A Gray Valet key will start the vehicle and lock/unlock all doors, but will notopen the trunk compartments or operate the trunk switch lock out.PROGRAMMING PASS-KEY III:(Auto Learn)The Pass-Key III system auto learn procedure must be performed when any ignition keyis replaced. A password is communicated between Pass-Key III module and PCM toprovide engine operation. To add a new key:1) Insert a valid mechanical coded unlearned ignition key in the ignition switch.2) Placed ignition switch in RUN position. The security light will com on for 10 minutes orthe length of the auto learn timer. When auto learn timer expires and SECURITY indicatorlights go off, turn the key in the switch to the OFF position. Remove ignition key and wait10 seconds.continued on next page...DesignTech disclaims any liability or responsibility arising out of any inaccuracies of this information or use of this information for installations or otherwise.©2003 All Rights ReservedDesignTech International, Inc.DesignTech International, Inc.1-800-337-4468www.designtech-intl.comSection 4 - Page 36


(continued from previous page)Installation NotesInstallation Notes- Document #147 - Sheet 2 of 23) Repeat step 1 & 2, two more times. Insert the newly learned ignition key in ignitionswitch.4) Placed ignition switch in RUN position. The SECURITY indicator light should remainoff to indicate that ignition key was learned. if SECURITY indicator does not remain off,repeat steps 1 & 2.5) Attempt to start vehicle with the new key. If the vehicle does not start you must repeatthis entire proceedure.PROGRAMMING PASS-KEY III:(Quick Learn)This Pass-Key III system quick learn procedure is used to learn additional ignition keyswhen a valid master key is available (Black key is the master and Gray is the valet). Alearned Black master key must be used to ignitiate the quick learn procedure. Up to 10ignition keys total can be learned to the system.1) Insert a valid master ignition key in the ignition switch and start the engine. After 10seconds, turn ignition off and remove the key.2) Within 10 seconds, insert new cut unlearned key and turn ignition to Run position. Thesecurity light will illuminate until key is learned. This may happen so quickly light illuminationis not observed. Turn ignition Off. Remove ignition key 10 seconds after the lightgoes out.3) Attempt to start vehicle with the new key. If the vehicle does not start you must repeatthis entire proceedure.To learn aditional key repeat steps 1 & 2.Information compliments of Mitchell.DesignTech disclaims any liability or responsibility arising out of any inaccuracies of this information or use of this information for installations or otherwise.©2003 All Rights ReservedDesignTech International, Inc.DesignTech International, Inc.1-800-337-4468www.designtech-intl.comSection 4 - Page 37

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