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casa ground operations inspector manualVista, CA N552A 12-99 Vista, CA N552A 12-99 Downloaded from: Remove it before drilling your -inch hole. Use quick-disconnects near the LED wires if the panel is removable.The transis- torized output can only supply 200 mA of current. Connecting directly to a solenoid, motor, or other high-current device will cause it to fail. 1999 Directed Electronics, Inc.This output is capable of driving two relays if necessary.Vista, CA Figure B. Vista, CA -inch hole.This type of system is difficult to mistake for any other type.The fuse used on 12-volt inputs should be 7.5A per motor installed in the vehicle.Program switch is pressed too many times. More than 15 seconds elapses between programming steps.In the off setting, if the vehicle fails to start, the ignition can stay on for the entire run duration.Try programming the unit for low voltage reference. Therefore, never operate the system in an area that does not have adequate ventilation. PAGE 5 installation points to remember IMPORTANT. This product is designed for fuel-injected, automatic transmission vehicles only. Installation of this product in a standard transmission vehicle is dangerous and is contrary to the product's intended use. Do not disconnect the battery if the vehicle has an anti-theft-coded radio. Also avoid disconnecting the battery if the vehicle is equipped with an airbag. Many airbag systems will display a diagnostic code through their warning light after they lose power. The switch should be well hidden. It should be placed so that passengers or stored items (such as items placed in a glove box or center console) cannot accidentally bump it. PAGE 7 starter kill relay If the starter kill relay or its connections are immediately visible upon removal of the under-dash panel, they can easily be bypassed. Always make the relay and its connections difficult to discern from the factory wiring. Exposed yellow butt connectors do not look like factory parts, and will not fool anyone.http://esprimagroup.com/userfiles/envirotemp-deluxe-water-heater-manual.xml
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For this reason, routing the starter kill wires away from the steering column is recommended. PAGE 8 finding the 12V switched ignition wire The ignition wire is powered when the key is in the run or start position. This is because the ignition wire powers the ignition system (spark plugs, coil) as well as the fuel delivery system (fuel pump, fuel injection computer). Accessory wires lose power when the key is in the start position to make more current available to the starter motor. In many vehicles the light switch is built into the turn signal lever; in these vehicles the parking light wire can be found in the steering column. The same wire can often be accessed in the kick panel or running board. NOTE: Many Toyotas and other Asian vehicles, send a (-) signal from the switch to a relay. There will often be more than one accessory wire in the ignition harness. The correct accessory wire will power the vehicle's climate control system. Some vehicles may have separate wires for the blower motor and the air conditioning compressor. In such cases, it will be necessary to add a relay to power the second accessory wire. The upgrade from this unit to a security system would simply require unplugging and exchanging control units and connecting the necessary wires to the vehicle. The functions of all the wires that are used in the primary harness are displayed in the following wiring diagram and their connections are described in the wire connection guides. This output ceases as soon as the system is disarmed. The orange wire is pre-wired to control the 8618 starter kill relay. NOTE: If connecting the orange wire to control another module, such as a 529T or 530T window controller, a 1 amp diode (type 1N4004) will be required. Insert the diode as shown below. This wire can be wired to an optional momentary switch to activate the remote start system. This output is only intended to drive a relay.http://www.frimaslovakia.sk/userfiles/file/envision-32-tv-manual.xml It outputs a single pulse when locking the doors with the remote, and two pulses when unlocking with the remote. This wire will also output pulses for 30 seconds when the Panic Mode is activated. PAGE 16 relay satellite key switch interface The five heavy gauge wires leading from the relay satellite are used to energize high current circuits in the vehicle. It is crucial that these connections are made correctly so that they are capable of handling the current demands. For this reason, scotch locks, T-taps and other such connectors should not be used. If the vehicle uses a positive wire (12V to turn on the bulb) a relay must be used to change the polarity. (See Finding the Wires You Need section of this guide. This can be used to pulse the disarm wire of the vehicle's factory anti-theft device. This wire can also be used as a special accessory output. (See Feature Descriptions section of this guide. This input will disable or shut down the remote start when the hood is opened. The remote start will be disabled or shut down any time the brake pedal is depressed. PAGE 20 neutral safety switch interface Some vehicles combine the column shift mechanism and the mechanical neutral safety switch into one mechanical part. In these vehicles, it is impossible to interface the remote start system before the neutral safety switch. With this type of vehicle, if the vehicle is left in a drive gear and the remote start system is activated, the vehicle will move and may cause damage to persons or property. PAGE 21 IMPORTANT! Once the interface is complete, attempt to remote start the vehicle with the door closed and the key in the ignition. The vehicle should not start. If it does, re-check the connections. As of the date of this guide’s publication, the following list describes the types of vehicles that are known to have a mechanical neutral safety switch instead of an electrical neutral safety circuit. The model years will vary from vehicle to vehicle. PAGE 25 type B: (-) pulses from the switch to the factory relays This system is common in many Toyota, Nissan, Honda, and Saturn models, as well as Fords with the keyless-entry system (some other Fords also use Type B). The switch will have three wires on it, and one wire will test ground all the time. One wire will pulse (-) when the switch locks the doors, and the other wire will pulse (-) when the switch unlocks the doors. This type of system is difficult to mistake for any other type. PAGE 26 type C: reversing polarity Interfacing with a reversing polarity system requires either two relays or one 451M Door Lock Relay Satellite (not included). It is crucial to identify the proper wires and locate the master switch to interface properly. Locate wires that show voltage on lock and unlock. Cut one of the suspect wires and check operation of the locks from both switches. PAGE 27 type D: aftermarket actuators In order for this system to control one or more aftermarket actuators, a 451M Door Lock Relay Satellite (optional) or two relays (optional) are needed. Vehicles without factory power door locks require the installation of one actuator per door. This requires mounting the door lock actuator inside the door. Other vehicles may only require one actuator installed in the driver's door if all door locks are operated when the driver's lock is used. PAGE 28 type E: mercedes-benz and audi (1985 and newer) These door locks are controlled by an electrically activated vacuum pump. Some Mercedes and Audis use a Type D system. Test by locking doors from the passenger key cylinder. If all the doors lock, the vehicle's door lock system can be controlled with just two relays (optional). To interface, see the diagram below. The receiver can store up to 4 different transmitter codes in memory. Use the following learn routine to add transmitters to the system or to change button assignments if desired. Make sure the learn routine is unlocked before programming features. PAGE 31 system's memory. The unit will chirp to confirm that the code has been successfully programmed. Due to the number of features, the features have been divided into two menus. One long horn honk (if connected) indicates that the Learn Routine has been exited. Programming the system to provide 3.5 second pulses will accommodate the door lock interface in these vehicles. If programmed to the voltage sense setting, the unit will crank the starter for a preset time that can be programmed in Feature 5. Once the starter has been engaged, the system will check the voltage level to verify the engine is running. The threshold for the voltage level test can be programmed in Feature 2-6. PAGE 38 shutdown diagnostics The unit has the ability to report the cause of the last shutdown of the remote start system.The engine will run for the programmed run time and then shut down. PAGE 40 to exit timer mode manually Timer Mode can also be exited manually as follows: 1. Make sure the remote start system is not operating the engine. 2. Turn the ignition on. Timer Mode will be exited and the parking lights will flash four times.The following test procedure must be used to verify proper installation and operation of the system. Once the system passes the three tests, the vehicle can be re-assembled and delivered. Do not the use the remote start system or finalize the installation if it fails any of the safety check tests. Books Audiobooks Magazines Podcasts Sheet Music Documents (selected) Snapshots Enjoy thousands of titles when you subscribe Read free for 30 days AutoMate 552 Install Manual Uploaded by Nathan Mossor 0 ratings 0 found this document useful (0 votes) 2K views 42 pages Document Information click to expand document information Description: Model 552 Installation Guide is a step-by-step guide to the installation of your new door lock system. Report this Document Download now Save Save AutoMate 552 Install Manual For Later AutoMate 552 Install Manual Uploaded by Nathan Mossor 0 ratings 0 found this document useful (0 votes) 2K views 42 pages Model 552 Installation Guide is a step-by-step guide to the installation of your new door lock system. More Save Save AutoMate 552 Install Manual For Later 0 0 found this document useful, Mark this document as useful 0 0 found this document not useful, Mark this document as not useful Embed Share Print Download now Jump to Page You are on page 1 of 42 Search inside document. Page Count: 42 Th e followin g precauti on s are th e sole r esponsibility o f th e user; h owever, authorized DEI dealers sh ould m ake th e f ollow- ing r ecomm end ati ons to all users o f this system: 1. Never oper ate th e system in an enclosed or parti ally en closed area with out ven tilati on (such as a gar ag e). 2. When parkin g in an en closed or partially en closed ar ea or when havin g th e vehi cle serviced, th e rem ote start system must be disabled usin g th e installed toggle switch. 3. It is th e user's sole r esponsibility to pr operly han dle and k eep out o f r each from child r en all rem ote contr ol tr ansmitters to assur e that th e system does n ot unin ten tion ally r emote start th e vehi cle. 4. THE USER MUST INST ALL A CARBON MONOXIDE DETECT OR IN OR ABOUT THE LIVING AREA ADJA CENT TO THE VEHICLE. Ex cept wh en performin g th e Safety Check outlin ed in this in stallati on guid e, (1) Never r em otely start the vehi cle with th e vehicle in g ear, and (2) N ever r emotely start th e vehi cle with the keys in th e i gnition. Th e user will be r esponsible f or havin g th e neutr al safety featur e of th e vehi cle period- ically ch eck ed, wh er ein the vehi cle m ust n ot rem otely start while th e car is in gear. This testing sh ould be perform ed by an auth orized DEI dealer in accor d ance with th e Safety Ch eck outlin ed in this prod u ct installa- tion gui d e. If th e vehi cle starts when perf ormin g the N eutr al Safety Shutd own Circuit test, th e r emote start unit has n ot been pr operly installed. Th e r emote start m od ule must be r em oved or properly r ein stalled so that the vehi cle d oes not start in g ear. All installati on s must be perf orm ed by an authorized DEI d ealer.This product is designed for fuel-injected, automatic transmission vehicles only. Do not disconn ect th e battery if the vehi cle has an an ti-theft-cod ed r adi o. Also avoid disconn ectin g the battery if the vehi cle is equipped with an airbag. M any airbag system s will display a di agnosti c cod e thr ough their warning li gh t after they lose power. Disconnectin g th e battery requir es this cod e to be er ased, a pr oced ure that can requir e a trip to th e dealer.The first thin g a thi ef will do wh en h ot-wiring a vehi cle is to r em ove the d river's si de un d er-dash pan el to access the starter an d i gnition wir es. Y ou should th eref or e avoi d placing th e con trol m od ule just behind th e d river’s sid e dash to pr even t it from bein g easily disconn ected durin g a th eft attempt. When locatin g th e contr ol m odule, try to find a secur e location that will n ot r equir e you to exten d th e harness wires (th ey ar e 1.5 meters lon g). Keep th e con trol m od ule away from th e h eater cor e (or any oth er h eat sources) an d an y obvious leaks. The hi gh er the con tr ol mod ule is in th e vehi cle, th e better the tr an smitter ran g e will be. Som e good con tr ol mod ule locati ons: Above th e glove bo x, insi d e th e center con sole, above the und er-d ash fuse box, or above th e radi o. control module The switch should be well hid d en. It sh ould be placed so that passen gers or stor ed item s (su ch as items placed in a glove bo x or cen ter console) cann ot acci den tally bump it. This lets m echanics or oth er in stallers rem ove th e panel with out havin g to cut the wir es.Always m ak e the r elay an d its connecti on s diffi cult to discern from th e f actory wiring. Exposed yellow butt connectors d o n ot look like f actory parts, and will n ot f ool an yone. For this r eason, r outing the starter kill wir es away fr om the steerin g column is r ecommen d ed.IMPORT ANT! Do not use a 12V test light to locate these wires. All testing described in this manual assumes the use of a digital multimeter. Always install a fuse within 12 in ch es of this conn ecti on. IMPORT ANT! Do not remove the fuse holder on the red wire. It ensures that the control module has its own fuse, o f the proper value, regardless o f how many accessories are added to the main power feed.This is because the i gniti on wire powers the i gniti on system (spark plugs, coil) as well as th e fuel d elivery system (fuel pump, fuel injection computer). Accessory wir es lose power wh en the k ey is in th e start position to m ak e m ore curr en t available to the starter m otor. Th e steering column harness or i gniti on switch harness is an e x cellent place to fin d this wire. 4. T urn th e igniti on k ey switch to the run positi on. Th e meter display sh ould stay stead y, not d roppin g by m ore than a few tenth s o f a volt. The starter wir e pr ovid es 12V dir ectly to the starter or to a r elay con tr olling starter. In some vehi cles, it is necessary to power a cold start cir cuit. A cold start cir cuit will test ex actly lik e a starter circuit, but it d oes n ot contr ol th e starter. Instead, th e cold start cir cuit is used to prime th e fuel injecti on system f or starting wh en th e vehicle is cold. How to find the starter wir e with y our multimeter: 1. Set to DCV or DC voltage (12V or 20V is fin e). 2. Attach th e (-) pr obe of th e m eter to chassis groun d. 3. Probe th e wir e you suspect of bein g th e starter wire. The steerin g column is an ex cellen t place to find this wir e. Remember you do n ot n eed to interrupt th e starter at th e same poin t you test it. Hi ding your starter kill relay an d conn ection s is always r ecommen d ed. 4. T urn th e igniti on k ey switch to the start positi on. M ak e sure th e car is not in g ear. If it d oesn’t, pr obe anoth er wir e. 5. Cut the wir e you suspect o f being th e starter wir e. 6. Attempt to start th e car. If the starter en gages, r econnect it an d g o back to Step 3. If th e starter does n ot turn over, you have the righ t wir e.Th e sam e wire can o ften be accessed in th e ki ck panel or runnin g boar d. NOTE: Many T oyotas and other Asian vehicles, send a (-) signal from the switch to a relay. If the m eter chan ges m or e than a volt when usin g th e dimmer, look for an oth er wire.Th e corr ect acces- sory wire will power th e vehi cle's climate con tr ol system. Some vehi cles m ay have separ ate wires f or th e blower motor an d th e air conditi onin g compressor. In such cases, it will be n ecessary to ad d a relay to power th e secon d accessory wire. T o test for a tach ometer wir e, a multimeter capable o f testin g AC voltag e m ust be used. Th e tach om eter wire will show between 1V an d 6V A C. In multi-coil i gniti on systems, th e system can learn in divid u al coil wir es. In div idual coil wires in a m ulti-coil i gnition system will r egister lower am ounts o f A C voltag e. Also, if n ecessary, the system can use a fuel injector contr ol wir e for en gin e speed sensin g. Comm on locati ons f or a tach ometer wir e ar e the igniti on coil itself, th e back of th e gaug es, en gin e computers, and autom ati c tran smissi on computers. IMPORT ANT! Do not test tachometer wires with a test light or logic probe. The vehicle will be damaged. How to find a tachometer wir e with y our multimeter: 1. Set to ACV or A C voltag e (12V or 20V is fine). 2. Attach th e (-) pr obe of th e m eter to chassis groun d. 3. Start and run th e vehi cle. 4. Probe th e wir e you suspect of bein g th e tachom eter wir e with th e red pr obe o f the m eter. 5. If this is the corr ect wir e the m eter will r ead between 1V and 6V. In diesel vehi cles it is n ecessary to interf ace with th e wire that turn s on th e W AIT T O ST ART ligh t in the d ash- board. This wir e illuminates th e bulb un til the vehi cle’s glow plugs ar e pr operly heated. Wh en the li gh t goes out the vehi cle can be started. This wire is always available at th e conn ector leading to th e bulb in th e d ashboard. It can also be f oun d at the En gin e Contr ol M od ule (ECM) in man y vehi cles.The functi on s of all th e wir es that are used in th e prim ary harness ar e displayed in th e followin g wirin g di agram an d th eir connecti on s are described in th e wir e connecti on gui des.This output ceases as soon as th e system is disarmed. Th e oran g e wire is pr e-wir ed to con trol th e 8618 starter kill r elay. IMPORT ANT! Never interrupt any wire other than the starter wire. If th e ligh t flash polarity jumper un der the sli din g door is m oved to th e opposite position (see Internal Programming Jumpers section), this wir e sup- plies a (-)200 mA output. This is available f or d riving (-) li gh t contr ol wir es in T oyota, Lexus, BMW, some Mitsubishi, some M azd a, and vari ous oth er mod els.This wir e can be wir ed to an option al mom en tary switch to activate the r em ote start system. Connect this wir e to th e option al d omeli gh t supervisi on relay as sh own below: IMPORT ANT. It cannot be connected directly to the domelight circuit because the output cannot support the current draw of one or more light bulbs. Connect this wir e to bar e metal, pr efer ably with a factory bolt r ath er than your own scr ew. (Screws tend to eith er strip or loosen with time.) W e recomm en d groun din g all your componen ts to th e sam e point in th e vehi cle.It outputs a sin gle pulse wh en locking th e d oors with the r em ote, an d two pulses wh en unlocking with th e r emote. This wire will also output pulses for 30 secon ds wh en the P anic M ode is activated. Befor e conn ecting this wir e, remove th e suppli ed fuse. Conn ect to th e battery positive terminal or th e con stant 12V supply to the i gniti on switch as described in th e Finding the Wires Y ou Need section of this gui d e. Do not use the 10A fuse in the harness for this purpose. This fuse is intended to protect the module. This output can also be pr ogramm ed to pr ovi de th e f ollowing types o f output: In stant validity, latched, latch ed-reset with i gniti on, 30-second tim ed, or secon d unlock output. (See Features Description section o f this gui de f or d etails.) IMPORT ANT! Never use this wire to drive anything ex cept a relay or low-current input. The transis- torized output can only supply 200 mA of current. Connecting directly to a solenoid, motor, or other high-current device will cause it to fail.It is cru cial that th ese conn ection s ar e mad e corr ectly so that th ey are capable o f han dling th e curr ent dem an ds. For this r eason, scotch locks, T -taps an d oth er such conn ectors sh ould not be used. Remove th e two 30 amp fuses pri or to connectin g th ese wires an d d o n ot replace th em un til the satellite has been plugged in to th e contr ol m odule. These wir es are th e sour ce o f curren t f or all the cir cuits th e relay satel- lite will ener gize. They must be conn ected to a hi gh curren t sour ce.This can be used to pulse th e disarm wire o f th e vehicle's f actory an ti-theft d evi ce. If pr ogramm ed f or status output, th e wire will supply an output at all tim es th e rem ote start is oper ating. If pr ogr ammed f or f actory security r earm, the wir e will supply a pulse wh enever th e rem ote start tim es out or is shut d own usin g the tr an smitter. This output provi d es a 200mA as soon as the r em ote starter is activated. This output is capable of drivin g two r elays if necessary.This input will disable or sh ut down th e r em ote start when th e hood is open ed. This wire MU ST be conn ected to the vehi cle's br ake li gh t wir e. Th e r emote start will be disabled or sh ut d own an y time th e br ake ped al is d epressed. This input provi d es the m od ule with inform ati on about th e engin e's r evolution s per min ute (RPMs). It can be con- nected to th e n egative sid e o f the coil in vehi cles with conven ti onal coils. This wire will test with gr ound with th e g ear selector either in P ARK or NEUTRAL. This will preven t the vehi cle fr om accid en tally being started while in a d rive g ear. This input MUST r est at gr ound in or d er for th e r em ote start system to operate. Connected pr operly the vehi cle will only start while in P ARK or NEUTRAL. In these vehicles, conn ect this wire to th e toggle switch as sh own in Fi gure B. Connect th e oth er wire fr om th e toggle switch to chassis groun d. Figure A Figure B IMPORT ANT. Always perf orm the V ehicle Safety Check section o f this guide to verify that the vehicle cannot be started in ANY drive gear and that the override switch is functioning properly.In th ese vehi cles, it is impossible to in terf ace the r em ote start system bef ore th e n eutral safety switch. With this type of vehi cle, if the vehicle is left in a d rive g ear and th e r emote start system is activated, th e vehi cle will move an d m ay cause dam ag e to persons or pr operty. Accor din g to available inform ati on, vehicles kn own to be m an ufactur ed this way ar e most Gen er al Motors tru cks, sport utility vehicles an d column shiftin g passeng er vehi cles. A vailable inf orm ation also in di cates that pre-1996 Dodg e Dak ota pickups with 2.5 liter m otors ar e also man uf actur ed this way. GM vehicles that have th e n eutral safety switch built in to th e column shifter can usually be i d en tified by a purple starter wire. T ypically, vehicles that use an outboar d m echanical switch use a yellow wir e fr om the i gniti on switch to the m echani cal switch and a purple wir e fr om the m echani cal switch to th e starter itself. Remember, this is only a rule of th umb an d is not in ten ded as a substitute f or pr oper testin g. IMPORT ANT! Please see vehicle Safety Check section of this guide for testing procedures. V ehi cles with the n eutr al safety switch built into th e column shifter r equir e that the shifter be placed in park in ord er to r emove th e k eys from th e i gniti on. As a r esult, it is possible to use th e key-in-i gniti on sense switch to preven t r emote startin g if th e keys ar e in th e i gnition. (See General Motors T ruck s, SUVs and Column-Shifting Passenger Cars an d Pre-1996 Dodge Dak ota Pickups with 2.5 Liter Motors di agram s in this secti on on how to accom- plish this.) Th e first di agram appli es to all Gen eral M otors vehi cles as o f the d ate o f this guid e’s publi cation. Th e second di agr am applies to all pr e-1996 Dod ge Dak ota pi ckup tru cks with 2.5 liter motors. This soluti on has one sid e effect: If th e customer in serts th e key in th e i gniti on with the d river's d oor open, the r em ote start system will shut d own. If this in terface is used, it is importan t to inform th e custom er that th e driver’s d oor m ust be closed befor e in serting th e k ey into th e i gniti on when th e r emote start is active. This will allow the custom er to turn the k ey on an d shut th e r emote start d own by pr essin g the br ak e, with out the k ey sen se wire sh uttin g down the unit pr em aturely. This pr events th e r emote start system fr om activatin g if th e key is left in th e “run” positi on. Y ou must use di od es to isolate the i gniti on circuit fr om th e br ake switch cir cuit as sh own in the f ollowin g diagr am. Once the interface is complete, attempt to remote start the vehicle with the door closed and the key in the ignition. As o f th e date o f this gui de’s publi cati on, th e followin g list d escribes the types o f vehi cles that are kn own to have a mechani cal n eutral safety switch in stead o f an electrical n eutr al safety cir cuit. The m od el years will vary from vehi cle to vehi cle.IMPORT ANT! If you mistake a Type C direct-wired system f or a T ype A positive-pulse system, the module will be damaged.Y ou must in stead fin d th e actual wir es leading to th e switch. Man y d omesti cally-m ade GM vehi cles use T ype A locks. However, many m or e GM vehicles ar e T ype C than in pre- vious years. Alm ost all dom es- tically-built For ds ar e T ype C. For d builds almost n o T ype A systems. Chrysler builds both T ype A and T ype C, so care m ust be tak en in determinin g th e type of d oor lockin g system.The switch will have thr ee wir es on it, and on e wir e will test groun d all th e tim e. On e wire will pulse (-) wh en the switch locks th e d oors, an d th e other wir e will pulse (-) wh en th e switch unlocks the d oors. This type of system is difficult to mistak e f or any oth er type. IMPORT ANT! Remember that the functions of these wires reverse between Type A and T ype B! type B: (-) pulses from the switch to the f actory r elay s It is cru ci al to id en tify the pr oper wir es an d locate the m aster switch to in terface pr operly. Locate wires that show voltag e on lock an d unlock. Cut one o f th e suspect wires an d ch eck oper ation o f th e locks from both switches. If on e switch loses operati on in both dir ection s an d th e other switch oper ates in on e directi on only, you have located one o f th e targ et wir es. Th e switch that lost all oper ati on is the m aster switch. If on e switch works in both directi on s and th e oth er switch works in only one dir ecti on, you have a T ype A system. If both switches still oper ate, but one or mor e d oors have stopped respon din g entir ely, you have cut a motor lead. Re- connect it an d con tinue to test f or an other wir e. Once both wires have been located an d th e m aster switch has been id en tified, cut both wir es and in terf ace as sh own below.V ehi cles without f actory power d oor locks requir e th e installati on of on e actu ator per door. This requires moun tin g the d oor lock actu ator insi d e th e door. Other vehi cles m ay only requir e on e actuator in stalled in th e driver's d oor if all d oor locks are oper ated wh en the d river's lock is used. This type o f installati on is r equired to operate f actory lock system s in V olvo (e xcept 850), S AAB, an d m ost Mazd a, I suzu and Subaru m od els. Th e fuse used on 12-volt inputs should be 7.5A per m otor in stalled in the vehi cle. IMPORT ANT! Do not connect the outputs of the alarm directly to the actuator.Some M er ced es and A u dis use a T ype D system. T est by locking d oors from th e passen ger k ey cylin der. If all the doors lock, th e vehi cle's door lock system can be contr olled with just two r elays (option al). T o interf ace, see th e diagr am below. The system m ust be progr amm ed f or 3.5 second d oor lock pulses. (See Operation Settings Learn Routine section o f this gui de.) This system usually r equir es a negative pulse to unlock, an d cuttin g the wir e to lock th e d oor. In some vehicles, these ar e r eversed. I t is f ound in late-m od el Nissan Sen tras, som e Nissan 240SX, an d Nissan 300ZX 1992 an d later.