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Keeping Cool Under Pressure

1. 1150 rpm T Generic OBD II scanners and the CONSULT both display live data OBD the fault occurred well theoretically at least Newer vehicles with CAN store five frames of data three before the fault one at the time of the fault and one after the fault OBD II specifies what data must be included in the freeze frame data FFD With a generic scan tool you ll only have access to this ll mandated data However with a CONSULT you ll be able to see all of the information Nissan engineers felt might be relevant to the fault Self Diagnostic Results Trouble Codes Mode 3 Generic Trouble codes fall into two categories OBD and manufacturer specific What s the difference An OBD Il code will mean pretty much the same thing on any car A manufacturer specific code will only apply to one make Why bother with manufacturer specific codes The reason is that these unique codes can describe faults in systems that are specific to Nissan vehicles Or they can describe problems in a more detailed way than what would comply with the OBD Il specification In other words OBD II does not cover everything nor does it cover everything in enough detail OEM codes allow Nissan to provide more information to technicians and more information is always better Both the CONSULT and generic scan tools will display and OEM codes but the CONSULT will also have OEM code descriptions whereas a generic m
2. 603 431 6500 SWANZEY NISSAN OF KEENE INC 603 357 7945 NEW JERSEY AVENEL SANSONE S ROUTE 1 NISSAN 732 815 2525 BLOOMFIELD LYNNES NISSAN CITY INC 973 743 8387 BUTLER ROUTE 23 NISSAN L L C 888 393 4861 CHERRY HILL CHERRY HILL NISSAN INC 856 667 8010 nm Tec ail SUIT N NE FLEMINGTON FLEMINGTON NISSAN 800 381 9113 FREEHOLD DCH FREEHOLD NISSAN 732 780 4660 HAINESPORT CLASSIC CARS NISSAN INC 609 267 2886 HASBROUCK HEIGHTS MEADOWLANDS NISSAN 888 935 7799 HILLSIDE ROUTE 22 NISSAN INC 908 964 8700 JERSEY CITY HUDSON NISSAN 201 435 2003 KEYPORT PINE BELT NISSAN KEYPORT 732 264 4364 NEPTUNE SANSONE JR S 66 NISSAN 800 274 7121 NORTH PLAINFIELD NORTH PLAINFIELD NISSAN 800 311 4663 SOUTH BRUNSWICK ACME NISSAN 800 367 0269 TOMS RIVER PINE BELT AUTOMOTIVE INC 732 349 6878 TURNERSVILLE NISSAN OF TURNERSVILLE 800 883 0003 WOODBURY WOODBURY NISSAN INC 856 853 8176 NEW MEXICO ALBUQUERQUE MELLOY NISSAN 505 266 8588 ALBUQUERQUE RELIABLE NISSAN 505 897 6001 NEW YORK ALBANY DESTINATION NISSAN 518 694 0929 AMHERST MIKE BARNEY NISSAN 716 833 6618 BAYSIDE STAR NISSAN INC 718 359 7454 BLAUVELT ROCKLAND NISSAN 845 358 3670 BROOKLYN BAY RIDGE NISSAN INC 718 238 4776 BROOKLYN KINGS NISSAN INC 718 934 3900 EAST ROCHESTER HOSELTON NISSAN INC 585 385 3560 GREAT NEC
3. ARE YOU SERVICE READY Tools amp Education amp Equipment n Training A Techniques amp A Soft Skills Image Bob Chabot ManicMedia LLC Becoming and remaining fully service ready over time to provide collision repair has gotten complicated Diagnosing understanding and remedying electrical systems damaged in a collision takes a commitment to train and evolve in the four key areas above and then being able to integrate competencies into everyday practices and procedures courtesy ManicMedia LLC Network topology diagrams provide technicians with a lay of the land overview Color coding can help technicians build quick associations between Result Export controllers and networks when problems arise courtesy Auto Tech on Wheels ton munication lve information z 1 pP Present Led Start Port AV End Pome E1 P Past error P Hot dixenosed Abwor mal EGU Hag detected CAV MULTI AV Mot daiecisd or nol shi Lt to use genuine Nissan resources can limit the completeness of a collision repair For example technicians should be aware that third party information providers often edit down their wiring diagrams sacrificing critical details for uniformity The two main challenges that technicians face today are the need to pay attention to authentic wiring sche
4. F Winter 2014 15 Keeping Cool in stock at a very reasonable price considering the vehicle up to normal operating temperature rev the quality and peace of mind it provides engine a few times with no load then drain Repeat Nissan does not approve any third party until the fluid drains clear Due to improvements antifreeze flush machines or additives for use in both materials and chemicals it is rare to see with its cooling systems If a cooling system truly significantly corroded cooling systems unless due should be flushed due to incorrect fluid or severe to gross owner neglect Typical draining and filling contamination Nissan officially recommends filling of the coolant should be sufficient to maintain the radiator completely with pure water Run the vehicle longevity Crankshaft position sensor Camshaft position sensor Cooing fan conto Battery Battery voltage Vehicle speed Air conditioner ON signal A C evaporator temperature ECM determines the start signal status by the signals of engine speed and battery voltage amp This signal is sent via the CAN communication line The radiator and auxiliary fan control on this 2011 3702 leverages the power of CAN communication to control supplemental air flow over the radiator Out with the old in with the new The Air Left Generic coolants are not designed for Lift method uses shop air and a venture to Nissan vehicles The coolant test strip shows es
5. Once again it s possible to fix a Nissan without a CONSULT but a whole lot easier with a CONSULT Active Tests amp Function Tests Mode 8 Generic Active tests let you control the ECM s output with the CONSULT You can perform cylinder balance tests by disabling fuel injectors one at a time command relays and solenoids on and off force the fuel mixture rich or lean change the ignition and cam timing and a bunch more Active tests are a real Qu s time saver The generic alternative Up to active tests is Mode 8 Typically Mode 8 provides only very basic functions like commanding the Qd canister close valve so you can perform EVAP testing l Work Support No Generic Equivalent Work support is what you might suspect You ll find scan tool enabled shortcuts for setting the base idle releasing the fuel pressure adjusting the ignition timing and other work related functions Nissan also provides a secondary EEA method for accomplishing the same goals but it s invariably quicker to use the CONSULT than to use the manual procedure This utility can be used before starting diagnosis or after a repair Nissan Program Dealers ALABAMA ALBERTVILLE NISSAN OF ALBERTVILLE 256 878 4390 BIRMINGHAM CROWN NISSAN 205 823 5266 BIRMINGHAM JIM BURKE NISSAN 205 278 5904 BIRMINGHAM SERRA NISSAN 205 856 2544 DAPHNE CHRIS MYERS NISSAN 251 626 5558 HUNTSVILLE LANDERS MCLARTY
6. car com for more training information Of note the I CAR website has a subpage titled Airbag Parts Replacement Recommendations which provides airbag replacement recommendations in chart form once a visitor inputs year make model data Nissan vehicles are covered but again these guidelines may lag behind current Nissan service information The chart recommendations cover frontal side and rollover collision events For our example let s continue with the 2008 Altima Details cover two categories Parts that must be replaced following airbag deployment For frontal collision events if the driver or passenger airbag has deployed the airbags must be replaced with new ones and also be installed with new fasteners Any pre tensioners or damaged restraint system parts must be replaced with new parts Sensors and electronic system components must be tested and replaced according to service information directions For side or rollover events some other actions are required For instance in a side collision SRS components deployed in a side collision satellite sensors seatback assemblies and fasteners on the collision side must be replaced with new parts Parts that must be inspected and if damaged or faulty replaced Following a collision inspect for and replace any SRS components and related parts that show visible signs of damage dents cracks deformation In addition a diagnostic check of all SRS electronic contr
7. right top to bottom Just like text in a book bi directional testing and utilities tailored to Nissan systems Accessing all of these additional capabilities usually requires using a Nissan scan tool the CONSULT If your shop repairs a lot of Nissan vehicles a new CONSULT Ill plus is an excellent investment because while you might be able to fix a Nissan without it you ll be able to fix it a whole lot faster with it Jack In and Shake Hands The OBD II diagnostic connector is always the same shape and some of the pin locations and functions are standard across all implementations of OBD II The OBD II Data Link Connector DLC should be within two feet of the steering wheel on the driver s side Adherence to the OBD II specs depends a bit on the year a vehicle was produced A 1996 will probably lack full compliance but by MY 2001 it s usually safe to make some assumptions Pins 7 and 15 should be ISO 9141 if used Pins 6 and 14 should be CAN if used Pin 4 will be chassis ground and pin 5 will be sensor ground Pin 16 will be battery voltage When in doubt there will always be a DLC diagram in the service manual Nissan used a different style non OBD ll compliant 14 connector for the CONSULT scan tool up until MY 2000 so between 1996 and 2000 you ll find two different DLCs If connecting a generic scan tool use the OBD II connector If connecting the CONSULT use the Nissan connector Even though the CONSULT is
8. Control System and its components including a discussion on the advantages of the design as well as some diagnostic considerations that underscore the importance Nissan has given to reliability 10 Keeping Cool There is no such thing as a maintenance free cooling system It s important to identify potential problems and catch them before a break down situation Let s explore Nissan s various engine cooling systems the importance of proper fluids and some best practice inspection techniques 18 Wiring Matters Network topology wiring diagrams and scan tools are essential for modern collision repair 04 Nissan and OBD An overview of Nissan OBD Il and why the CONSULT is superior when compared to generic scan tools for diagnosing problems on Nissan vehicles Departments 27 Nissan Dealer Listings Winter 2014 j Feature Cutting the Cable Nissan Electronic Throttle Control ER 1 4 it ai E i k 4 22 re A look at Nissan s Electronic Throttle Control System and its components including a discussion on the advantages of the design as well as some diagnostic considerations that underscore the importance Nissan has given to reliability 1 Nissan TechNews NISSAN C As we in the industry all know there is no such thing as a gas pedal but rather a pedal that controls air flow into the engine Traditional designs connect the accelerator pedal di
9. able to physically connect to the OBD II connector there will be no access to the OEM side of the diagnostic system After 2000 full access to the OEM side is available through the OBD connector Similarities and Differences OBD II and the Nissan OEM OBD side share some similarities but also have some or Functionality test is used to find a fault both the differences Let s start by talking about how the generic and OEM sides use trips to determine generic side and OEM side are the same First whether or not to turn on the MIL A trip is not just both use self testing to find faults There are three driving from Point A to Point B A trip is a set of basic types of diagnostic strategies enabling conditions that allow a self diagnostic test Normality testing to run The enabling criteria may be continuous Rationality testing when the key is on or the engine is running Functionality testing or it may be a very specific set of rpm load temperature and speed conditions Some trips may even require the car to be sitting with the key off DTCs can be one trip or two trip meaning that Normality testing is pretty simple the ECM is asking the question Is what am seeing normal An ECT sensor might be expected to report between 230 and 11 000 ohms If the circuit the a DIC may be set as soon as the fault is resistance is 1 ohm or 1 000 000 ohms the detected one trip or only set after a fault has SET As s
10. build up or other restriction There is no way for a technician to manipulate base idle on this system as you used to do with a traditional idle screw The learned position can be lost when computer memory is lost so be mindful of this fact when disconnecting the battery for repairs CONSULT Ill plus can be used to recalculate base idle using the WORK SUPPORT section Bulletproof Reliability Throttle by wire is a phrase borrowed and changed from the aeronautical industry s tly by wire concept Modern airplanes replace hydraulic lines with computer controlled localized servos actuators or motors If it s safe enough for airplanes the technology is ready for vehicles Many people are concerned about the reliability of throttle by wire systems especially if a failed TPS or APP means a loss of accelerator control Nissan eliminates this fear by engineering these vital systems with duplicate sensors for error detection and fail safe operation Nissan s fail safe includes two separate position sensors for both the accelerator pedal assembly and the throttle body valve The TPS is made up of two separate sensors each bringing down the 5V reference coming from the ECU In the event that one position sensor malfunctions the secondary position sensor will provide the data necessary for safe operation as well as provide the rational baseline for comparison and error checking Likewise the APP has two distinct sensors that report tw
11. 0 HARVEY RAY BRANDT NISSAN INC 504 363 1918 NISSAN MAINE SOUTH PORTLAND BERLIN CITY NISSAN 207 774 1429 MARYLAND BALTIMORE ANTWERPEN SECURITY NISSAN 410 298 5369 BALTIMORE BOB BELL CHEVROLET NISSAN 410 288 7442 BEL AIR BEL AIR NISSAN 410 879 1133 CLARKSVILLE ANTWERPEN NISSAN INC 866 226 4930 COLLEGE PARK DARCARS NISSAN COLLEGE PK 301 345 6245 ELLICOTT CITY NORRIS NISSAN WEST 443 549 1260 FREDERICK YOUNGER NISSAN FREDERICK 301 662 4800 GERMANTOWN CRISWELL NISSAN 301 670 3900 GLEN BURNIE SHEEHY NISSAN 877 478 3539 LAUREL TISCHER NISSAN 800 288 6983 MARLOW HEIGHTS PASSPORT NIS MARLOW HGTS 301 423 8400 ROCKVILLE DARCARS NISSAN 301 309 2200 SALISBURY POHANKA NISSAN SALISBURY 410 548 4704 SILVER SPRING HERB GORDON NISSAN 301 890 3055 TIMONIUM NATIONWIDE MOTOR SLS CORP 410 252 5834 WALDORF SHEEHY NISSAN OF WALDORF 301 843 5300 MASSACHUSETTS AUBURN BERTERA NISSAN INC 508 832 9611 BOURNE NISSAN OF BOURNE 508 759 4400 BROCKTON NISSAN 24 508 513 1869 HYANNIS BALISE NISSAN OF CAPE COD 508 771 3636 KINGSTON SULLIVAN BROS NISSAN L M 781 585 7500 LANCASTER RON BOUCHARD S NISSAN 978 345 1800 MILFORD MILFORD NISSAN 508 422 8000 NORTH ATTLEBORO NISSAN VILLGE N ATTLEBORO 888 309 0980 NORTH DARTMOUTH NISSAN WORLD OF DARTMOUTH 508 996 3325 NORWOOD CLAY NISSAN 781 326 1500 RAYNHAM MA
12. 1 735 3360 COSTA MESA CONNELL NISSAN 714 444 4220 DOWNEY DOWNEY NISSAN 888 444 1355 DUARTE NISSAN OF DUARTE 626 305 3000 DUBLIN DUBLIN NISSAN 925 452 8019 EL CAJON MOSSY NISSAN EL CAJON 619 401 2068 Nissan TechNews EL MONTE ROSS NISSAN OF EL MONTE 800 411 0554 ELK GROVE NISSAN OF ELK GROVE 916 405 5010 ESCONDIDO MOSSY NISSAN ESCONDIDO 760 746 5050 FAIRFIELD MOMENTUM NISSAN 707 402 3200 FONTANA FONTANA NISSAN 909 350 8404 FREMONT PREMIER NISSAN OF FREMONT 510 668 8700 FRESNO LITHIA NISSAN OF FRESNO 559 435 3500 GARDEN GROVE OC NISSAN GARDEN GROVE 114 537 0900 GARDENA GARDENA NISSAN INC 310 527 9215 GLENDALE GLENDALE NISSAN 818 547 5550 HAWTHORNE AUTONATION NIS SOUTH BAY 310 536 4040 HUNTINGTON BEACH SURF CITY NISSAN 114 500 6040 IMPERIAL ROGERS amp ROGERS NISSAN 760 352 2900 IRVINE OC NISSAN IRVINE 800 515 4797 LA QUINTA TORRE NISSAN 760 777 8999 LOS ANGELES NISSAN OF DOWNTOWN L A 888 576 4560 LOS ANGELES UNIVERSAL CITY NISSAN INC 818 980 0655 MISSION HILLS NISSAN OF MISSION HILLS 818 408 5870 MODESTO CENTRAL VALLEY NISSAN INC 209 526 9736 NAPA NAPA NISSAN INC 707 253 1783 NATIONAL CITY MOSSY NISSAN NATL CITY 619 263 7251 ONTARIO EMPIRE NISSAN INC 800 994 8881 ORANGE STADIUM NISSAN 714 633 4264 OXNARD TEAM NISSAN 805 485 2910 PALMDALE ANTELOPE VALLEY NISSAN
13. 17 484 3540 CONROE STREATER SMITH NISSAN 936 523 2142 CORINTH ORR NISSAN OF CORINTH 866 360 4763 CORPUS CHRISTI ED HICKS NISSAN LTD 361 654 8561 DALLAS CLAY COOLEY NISSAN 972 709 2000 EL PASO CASA NISSAN INC 915 779 3261 FORT WORTH NISSAN OF FORT WORTH 817 696 4886 GRAPEVINE TEXAS NISSAN OF GRAPEVINE 817 601 3563 HOUSTON BAKER NISSAN NORTH 281 890 0875 HOUSTON MCDAVID NISSAN 713 941 0400 HOUSTON MOSSY NISSAN 281 589 5309 HOUSTON TOM PEACOCK NISSAN 281 230 4367 HUMBLE ROBBINS NISSAN 281 446 3181 IRVING AUTONATION NISSAN IRVING 972 438 4848 LEAGUE CITY CLEAR LAKE NISSAN 281 557 5450 LONGVIEW PATTERSON NISSAN LONGVIEW 903 758 4135 MCALLEN BERT OGDEN NISSAN 956 631 6666 MCKINNEY NISSAN OF MCKINNEY 866 742 0297 MESQUITE TROPHY NISSAN 866 831 2622 RICHARDSON COURTESY NISSAN 972 644 3942 ROUND ROCK ROUND ROCK NISSAN 512 244 8525 SAN ANTONIO ANCIRA NISSAN INC 800 508 1117 SAN ANTONIO GUNN NISSAN LTD 210 494 4760 SAN ANTONIO INGRAM PARK NISSAN 210 681 6017 TEXARKANA PETE MANKINS INC 903 793 5661 TOMBALL FRED HAAS NISSAN 281 516 6700 UTAH MURRAY TIM DAHLE NISSAN 801 269 6420 OREM KEN GARFF NISSAN OF OREM 801 494 8694 RIVERDALE KEN GARFF NISSAN RIVERDAL 801 627 6762 SALT LAKE CITY KEN GARFF NISSAN OF SL 801 532 1443 SANDY TIM DAHLE NISSAN OF SANDY 801 495 3892 VER
14. 305 444 7868 MIAMI BILL SEIDLE S NISSAN INC 305 635 5478 MIAMI PALMETTO57 NISSAN 305 625 6320 NAPLES NAPLES NISSAN 239 659 9000 NEW PORT RICHEY FERMAN NISSAN OF NPR 727 847 5555 ORLANDO REED NISSAN 407 297 7333 ORLANDO SUTHERLIN NISSAN ORLANDO 407 657 9500 PALATKA BECK NISSAN INC 386 328 2775 PALMETTO BAY AUTONATION NISSAN KENDALL 305 259 2658 PEMBROKE PINES AUTONATION NISSAN PEMBROK 954 447 2366 PENSACOLA SANDY SANSING NISSAN INC 850 479 4777 ROYAL PALM BEACH ROYAL PALM NISSAN 561 491 7540 SAINT PETERSBURG CROWN NISSAN 727 527 8411 SARASOTA GETTEL NISSAN OF SARASOTA 941 921 2655 TAMPA AUTONATION NISSAN BRANDON 813 739 3427 TAMPA COURTESY NISSAN OF TAMPA 877 471 7658 TAMPA FERMAN NISSAN OF NO TAMPA 813 933 6641 WINTER HAVEN HILL NISSAN INC 863 595 2434 GEORGIA BOGART NISSAN OF ATHENS 706 549 6600 BUFORD SUTHERLIN NISSAN MALL GA 678 714 1062 CHAMBLEE CAPITOL CITY NISSAN LLC 770 457 4441 COLUMBUS HEADQUARTER NISS COLUMBUS 706 225 8100 CONYERS CONYERS NISSAN 770 929 8432 DECATUR NALLEY NISSAN 404 292 4774 DULUTH GWINNETT PLACE NISSAN 770 813 6770 GAINESVILLE CARRIAGE NISSAN 678 717 0440 KENNESAW TOWN CENTER NISSAN 770 423 7469 LILBURN STONE MOUNTAIN NISSAN 678 252 3111 MACON PAUL WALSH NISSAN INC 478 784 1991 MARIETTA AUTONATION NISSAN MARIETT 770 421 8639 MORROW N
15. 661 274 9556 PETALUMA NORTH BAY NISSAN INC 800 788 0772 REDLANDS METRO NISSAN OF REDLANDS 888 505 9211 REDWOOD CITY BOARDWALK NISSAN 650 364 0100 RICHMOND HANLEES HILLTOP NISSAN 510 222 4900 RIVERSIDE RACEWAY NISSAN 951 571 9300 RIVERSIDE RIVERSIDE NISSAN 951 688 9420 ROSEVILLE FUTURE NISSAN INC 916 677 5251 SACRAMENTO MAITA S NISSAN SACRAMENTO 916 486 8743 SAN BERNARDINO NISSAN OF SAN BERNARDINO 877 331 3647 SAN DIEGO MOSSY NISSAN KEARNY MESA 858 565 4411 SAN FRANCISCO NISSAN SAN FRANCISCO 415 500 8000 SAN JOSE PREMIER NISSAN 408 978 4580 SAN LEANDRO SAN LEANDRO NISSAN 510 347 3003 SANTA CLARA STEVENS CREEK NISSAN 408 557 5549 SANTA CRUZ SANTA CRUZ NISSAN 831 426 5100 SANTA MARIA SANTA MARIA NISSAN 805 925 0077 SANTA ROSA NISSAN OF SANTA ROSA 707 545 4500 SELMA SELMA NISSAN 559 891 2896 SHERMAN OAKS NISSAN OF VAN NUYS 818 787 1270 SIGNAL HILL HOOMAN NISSAN LONG BEACH 800 973 3689 SIMI VALLEY FIRST NISSAN 805 306 1021 SUNNYVALE NISSAN SUNNYVALE 408 470 4150 TEMECULA QUALITY NISSAN TEMECULA 951 587 3779 TUSTIN TUSTIN NISSAN 114 669 8282 VICTORVILLE VALLEY HI NISSAN 888 293 7769 VISALIA NISSAN OF VISALIA 559 741 2274 COLORADO AURORA TYNAN S NISSAN INC 303 341 3214 CENTENNIAL AUTONATION NIS ARAPAHOE 303 790 7333 COLORADO SPRINGS SOUTH COLO SPGS NISSAN 719 550 3041 COLOR
16. ADO SPRINGS WOODMEN NISSAN 119 234 1060 DENVER AUTONATION NISSAN 104 303 738 4330 HIGHLANDS RANCH LARRY H MILLER NISSAN 720 274 5243 LAKEWOOD EMPIRE LAKEWOOD NISSAN 303 232 3009 CONNECTICUT HARTFORD HARTE NISSAN INC 860 541 6942 MANCHESTER DECORMIER MOTOR SALES INC 860 643 4165 MIDDLEBURY COUNTY LINE NISSAN 203 758 8221 MIDDLETOWN MIDDLETOWN NISSAN LLC 860 632 6400 MILFORD NAPOLI NISSAN 203 877 5607 NORTH HAVEN EXECUTIVE NISSAN 888 479 5890 SHELTON D ADDARIO NISSAN 800 998 6978 TORRINGTON ALFANO NISSAN 860 482 5555 WEST HAVEN GEORGE HARTE NISSAN INC 203 389 5701 WEST SIMSBURY HOFFMAN NISSAN 860 658 3340 WILTON BRUCE BENNETT NISSAN 203 544 8371 DELEWARE NEW CASTLE SHERIDAN NISSAN L L C 302 326 6134 FLORIDA CLEARWATER AUTONATION NIS CLEARWATER 727 507 3200 CLEARWATER LOKEY NISSAN 727 450 7989 CORAL SPRINGS CORAL SPRINGS NISSAN INC 954 752 9595 DELAND DELAND NISSAN 386 734 3003 FORT LAUDERDALE AUTONATION NISSAN FT LAUD 954 524 2105 FORT MYERS SUTHERLIN NISSAN 239 267 1359 FORT PIERCE GRIECO NISSAN 772 464 4645 GAINESVILLE GAINESVILLE NISSAN 352 371 2023 JACKSONVILLE AUTONATION NISSAN JACKSON 866 668 8933 JACKSONVILLE COGGIN NISSAN 904 642 7900 JACKSONVILLE COGGIN NISSAN AT THE AVE 904 886 7330 LAKELAND JENKINS NISSAN INC 863 686 2800 MIAMI AUTONATION NISSAN MIAMI
17. ILWAUKEE ROSEN NISSAN INC 414 282 6888 THE RIGHT PART FOR THE JOB For newer vehicles and for customers who insist on using parts engineered for their exact vehacle it s always recommended to use the original equipment OE part OE parts from Nissan meet all Federal Motor Vehicle Safety Standards FMVSS to deliver optimal performance for each specific application But for customers with older vehicles or for customers who are very _ price conscious an OE part may prove too costly Fortunately smil 7 there is a high quality solutior Missan s new high quality line of brake parts can help retain this customer base and keep them from migrating to independent repair shops Nissan Value Advantage brake parts can help increase retention win customers back from the independent shops and increase profits at the dealership Tight Lateral Runout Rotor runout should be checked on the vehicle and not the brake lathe as the rotor may run true on the lathe but not the vehicle runout of 005 can result in pedal pulsation or brake noise and many competitive Aftermarket rotors exceed 005 Nissan Value Advantage brake rotors are ready to install out of the box with no tuming required because they have a lateral runout of 004 or less Excessive runout can cause friction material transfer after 5 000 7 000 miles which can adversely affect pulsation Proper Balance Excessive vibration in rotating rotors c
18. ISSAN SOUTH 770 968 1360 UNION CITY NISSAN SOUTH UNION CITY 770 306 9817 HAWAII HONOLULU NEW CITY NISSAN 808 545 3111 LIHUE KUHIO NISSAN 808 245 0525 WAIPAHU TONY NISSAN 808 680 7140 IDAHO POST FALLS FINDLAY NISSAN 208 618 5005 ILLINOIS ARLINGTON HEIGHTS ARLINGTON NISSAN ARLINGTN 847 590 0154 CENTRALIA MONKEN DG CR PL JP NISSAN 618 545 5100 CHICAGO MID CITY NISSAN INC 888 635 5652 COUNTRYSIDE CONTINENTAL MOTORS INC 708 354 3745 CRYSTAL LAKE JIM M LADY NISSAN 815 459 2296 EVANSTON THE AUTOBARN NISSAN 847 570 3077 GURNEE ROSEN NISSAN OF GURNEE 847 856 0644 MATTESON HAWKINSON NISSAN L L C 708 720 2185 NILES STAR NISSAN INC 800 421 1947 OAK LAWN KELLY NISSAN INC 708 425 6659 SKOKIE MARTIN NISSAN 847 967 2299 SOUTH HOLLAND NISSAN OF SOUTH HOLLAND 800 696 4772 ST CHARLES NISSAN OF ST CHARLES 630 584 2489 INDIANA FISHERS BUTLER NISSAN 866 237 0569 INDIANAPOLIS ANDY MOHR NISSAN INC 317 298 2015 INDIANAPOLIS ED MARTIN NISSAN 800 731 0228 INDIANAPOLIS HUBLER NISSAN INC 800 960 9811 INDIANAPOLIS TOM WOOD NISSAN INC 317 688 6222 IOWA DES MOINES HUMMELS NISSAN 515 251 8115 KANSAS MERRIAM HENDRICK NISSAN KC 913 722 5195 WICHITA DAVIS MOORE NISSAN INC 316 681 6970 KENTUCKY LEXINGTON GLENN NISSAN LLC 859 263 5020 LOUISIANA BATON ROUGE ALL STAR NISSAN L L C 225 272 933
19. K GREAT NECK NISSAN LLC 516 301 5155 HUNTINGTON STATIO NISSAN OF HUNTINGTON 631 439 7000 JACKSON HEIGHTS KOEPPEL NISSAN INC 718 898 7800 KINGSTON KINGSTON NISSAN 845 338 3100 MT KISCO JIM HARTE NISSAN INC 914 242 3990 OZONE PARK NISSAN OF QUEENS 877 259 2886 PATCHOGUE NISSAN 112 SALES CORP 631 289 9070 PORT CHESTER NISSAN CITY PORT CHESTER 914 937 1777 RIVERHEAD RIVERHEAD AUTO MALL LTD 631 369 0111 SAINT JAMES SMITHTOWN NISSAN INC 631 361 9560 SCHENECTADY LIA NISSAN 518 370 2121 SEAFORD MASSAPEQUA NISSAN 631 842 5320 STATEN ISLAND S G HYLAN MOTORS CORP 718 447 3863 SYOSSET LEGEND NISSAN LTD 516 496 7385 WEST ISLIP ATLANTIC NISSAN SUPERSTOR 631 587 2766 YONKERS CENTRAL AVENUE NISSAN INC 914 961 3900 YORKTOWN HEIGHTS CURRY NISSAN 914 737 3500 NORTH CAROLINA CHARLOTTE EAST CHARLOTTE NISSAN 704 535 4012 CHARLOTTE SCOTT CLARK NISSAN 704 552 9191 DURHAM MICHAEL JORDAN NISSAN 919 489 3800 ELIZABETH CITY ALLIANCE NISSAN 252 331 1107 FAYETTEVILLE FRED ANDERSON NISSAN FAY 910 323 4400 HICKORY CROSSROADS NISSAN HICKORY 828 324 5040 SANFORD CROSSROADS NISSAN 877 399 4830 STATESVILLE CLASSIC NISSAN STATESVILL 704 872 8500 WAKE FOREST CROSSROADS NIS WAKE FRST 919 435 5740 WILMINGTON CAPITAL NISSAN WILMINGTON 910 392 4300 OHIO AKRON FRED MARTIN NISSAN LLC 330 644 8888 CHILLICOTHE N
20. MONT SOUTH BURLINGTON FREEDOM NISSAN INC 802 846 0210 VIRGINIA ALEXANDRIA PASSPORT NIS ALEXANDRIA 703 823 9011 CHANTILLY NISSAN OF CHANTILLY 800 724 9350 CHARLOTTESVILLE COLONIAL NISSAN 434 951 1062 CHESAPEAKE HALL NISSAN CHESAPEAKE 757 673 8003 CHESAPEAKE NISSAN OF CHESAPEAKE LLC 757 436 4900 CHESTER PRIORITY NISSAN RICHMOND 804 518 1888 AEN EMP A Df vinter ZU 14 CHRISTIANSBURG NEW RIVER NISSAN INC 540 382 9697 FALLS CHURCH KOONS NISSAN 703 241 1000 FOREST LYNCHBURG NISSAN INC 434 385 7733 HAMPTON POMOCO NISSAN OF HAMPTON 757 838 6111 MANASSAS SHEEHY NISSAN OF MANASSAS 703 361 0377 MECHANICSVILLE SHEEHY NISSAN MECHANICS 804 417 1012 MIDLOTHIAN PENCE NISSAN 804 378 3000 NEWPORT NEWS NISSAN OF NEWPORT NEWS 757 369 6600 NORFOLK CHARLES BARKER NISSAN T5 284 3433 ROANOKE FIRST TEAM NISSAN 540 362 4800 SPRINGFIELD SHEEHY NISSAN SPRINGFIELD 703 922 2223 VIRGINIA BEACH HALL NISSAN VIRGINIA BCH 866 930 7644 WASHINGTON BELLEVUE NISSAN OF THE EASTSIDE 425 462 9074 EVERETT MAGIC NISSAN OF EVERETT 425 347 5763 OLYMPIA OLYMPIA NISSAN 888 713 0195 RENTON YOUNKER NISSAN 425 251 8107 SPOKANE WENDLE NISSAN 509 343 7471 WISCONSIN APPLETON BERGSTROM NISSAN APPLETON 920 749 3232 GREEN BAY GANDRUD NISSAN 800 242 2844 GREENFIELD GORDIE BOUCHER NISSAN 414 543 1985 M
21. NGINE ENG SPEED ENGINE BIFUEL SCHOL Lm ENGINE AJF ALPHA B1 COOLAN TEMP S CAL LD VALUE Past fault but SRT that would confirm repair has not run yet Key On Engine Running MIL flashing There is a condition that is likely to cause damage to the catalyst Live Monitor Live Data Mode 1 Generic Live data is just what it sounds like actual sensor values displayed as they are being measured When comparing the CONSULT Data Monitor to a generic scan tool s live data you ll find a few differences First on the generic side you ll find data displayed only in the OBD Il format For instance a generic tool might show a fuel trim PID as 3 whereas the CONSULT will display the PID as 10396 ALPHA Another major difference is that when the CONSULT is connected and reading live data the vehicle enters a check mode where two trip monitors become one trip monitors and pass fail parameters are narrowed making it easier to set trouble codes and easier to diagnosis marginal failures The CONSULT can also automatically record frames before and after the fault if the fault occurs while viewing live data These advantages make the CONSULT a much better test drive companion than a generic scan tool Freeze Frame Data Mode 2 Generic Freeze frame data is selected PIDs from the data stream during the time the fault was detected Older vehicles store a single snapshot at the time Line Graph single List w
22. NISSAN 256 830 0266 MOBILE PAT PECK NISSAN 251 470 5052 MONTGOMERY JACK INGRAM MOTORS INC 334 277 5700 ALASKA ANCHORAGE CONTINENTAL NISSAN ANCHOR 907 334 6230 ARIZONA AVONDALE AVONDALE NISSAN 888 856 3322 CHANDLER AUTONATION NIS CHANDLER 480 461 4358 MESA EARNHARDT S NISSAN SUPER 480 324 8880 MESA LARRY H MILLER NIS MESA 480 655 4060 PEORIA PEORIA NISSAN 623 523 6250 PHOENIX ABC NISSAN 602 264 3666 PHOENIX MIDWAY NISSAN 602 866 6650 SCOTTSDALE PINNACLE NISSAN 480 368 4050 TEMPE AUTONATION NISSAN TEMPE 480 598 6111 TUCSON JIM CLICK NISSAN 520 884 4130 ARKANSAS FAYETTEVILLE SUPERIOR NISSAN 479 442 4251 2 FORT SMITH SMITH NISSAN 479 648 1900 NO LITTLE ROCK NORTH LITTLE ROCK NISSAN 501 604 3955 CALIFORNIA ALHAMBRA ALHAMBRA NISSAN 626 289 7802 ANTIOCH ANTIOCH NISSAN 925 281 5050 BAKERSFIELD NISSAN OF BAKERSFIELD 661 396 4035 BUENA PARK BUENA PARK NISSAN 714 739 0800 BURLINGAME NISSAN OF BURLINGAME 650 347 4800 CARSON CARSON NISSAN 310 221 5121 CATHEDRAL CITY PALM SPRINGS NISSAN 760 328 2828 CERRITOS CERRITOS NISSAN 800 396 7278 CHICO CHICO NISSAN INC 530 891 0202 CHULA VISTA MOSSY NISSAN CHULA VISTA 619 397 6578 CITY OF INDUSTRY PUENTE HILLS NISSAN 626 626 2600 CLOVIS NISSAN OF CLOVIS 559 297 6919 COLMA SERRAMONTE NISSAN 650 488 2870 CORONA CORONA NISSAN 95
23. OM HESSER NISSAN LLC 866 950 2277 WEXFORD WRIGHT AUTOMOTIVE GROUP 724 935 4646 YORK APPLE NISSAN INC 717 755 9543 RHODE ISLAND EAST PROVIDENCE TASCA NISSAN 401 432 2000 MIDDLETOWN PREMIER NISSAN OF NEWPORT 401 619 5050 WARWICK BALISE NISSAN 401 780 3790 WEST WARWICK NISSAN WEST WARWICK 401 824 2364 SOUTH CAROLINA BEECH ISLAND BOB RICHARDS NISSAN 803 489 1111 CHARLESTON MORRIS MOTORS INC 843 571 2810 COLUMBIA DICK SMITH NISSAN 800 922 6218 GREENVILLE CROWN NISSAN GREENVILLE 864 254 7711 GREER NISSAN OF GREER 864 877 7678 HARDEEVILLE HILTON HEAD NISSAN 800 868 6615 ROCK HILL HARRELSON NIS SO CAROLINA 803 366 8171 TENNESEE ALCOA TWIN CITY NISSAN 865 970 4132 CLARKSVILLE HAROLD MATHEWS NISSAN 931 221 4230 FRANKLIN NISSAN OF COOL SPRINGS 877 250 7778 GALLATIN NEWTON NISSAN OF GALLATIN 615 451 6827 JACKSON CARLOCK NISSAN OF JACKSON 800 200 3997 JOHNSON CITY TRI CITIES NISSAN INC 423 952 1920 MEMPHIS AUTONATION NISSAN MEMPHIS 901 759 6100 MURFREESBORO NISSAN OF MURFREESBORO 615 893 0252 NASHVILLE DOWNTOWN NASHVILLE NISSAN 615 248 5110 TEXAS ARLINGTON DON DAVIS NISSAN INC 817 588 5364 AUSTIN SOUTH POINT NISSAN 512 444 4962 AUSTIN TOWN NORTH NISSAN 800 251 7278 BEDFORD GRUBBS NISSAN 817 268 8930 BROWNSVILLE CHARLIE CLARK NISSAN BRWN 956 214 2550 BURLESON NISSAN OF BURLESON 8
24. OURSE NISSAN 740 773 7913 HILLIARD BUCKEYE NISSAN INC 614 771 2370 MASSILLON WAIKEM NISSAN INC 800 274 0157 MIDDLEBURG HTS NISSAN OF MIDDLEBURG HTS 440 884 7800 STREETSBORO CLASSIC NISSAN 330 422 7300 TOLEDO YARK NISSAN 419 842 7532 OKLAHOMA BROKEN ARROW NELSON NISSAN 877 910 4646 OKLAHOMA CITY BOB HOWARD NISSAN INC 405 943 9555 OKLAHOMA CITY HUDIBURG NISSAN L L C 405 632 0715 TULSA BOB MOORE NISSAN OF TULSA 918 628 1495 TULSA JACKIE COOPER NISSAN 918 392 9832 OREGON EUGENE LITHIA NISSAN OF EUGENE 541 686 2218 MEDFORD LITHIA NISSAN 541 774 8416 PENNSYLVANIA ALLENTOWN ROTHROCK MOTOR SALES INC 484 223 0596 CONSHOHOCKEN CONICELLI NISSAN 800 845 0999 DOYLESTOWN FRED BEANS NISSAN DOYLEST 888 842 8829 ERIE PORRECO NISSAN INC 814 860 8377 EXTON EXTON NISSAN 610 594 7065 FAIRLESS HILLS PERUZZI NISSAN 215 943 6200 FEASTERVILLE COLONIAL NISSAN INC 215 364 1800 JENKINTOWN FAULKNER NISSAN 215 887 7940 MECHANICSBURG BRENNER NISSAN 800 396 8054 MONTGOMERYVILLE MONTGOMERYVILLE NISSAN 888 430 2929 MOON TOWNSHIP WEST HILLS NISSAN 412 262 1403 MUNCY ALEXANDER NISSAN INC 570 326 5127 PHILADELPHIA CHAPMAN NISSAN LLC 215 492 8900 PITTSBURGH COCHRAN NISSAN SOUTH HILL 412 343 3200 PITTSBURGH PITTSBURGH EAST NISSAN 412 823 0101 PLEASANT HILLS BOWSER NISSAN 888 455 2377 SCRANTON T
25. STRIA NISSAN INC 800 248 2458 TEWKSBURY AUTOFAIR NISSAN TEWKSBURY 978 746 2500 WEST SPRINGFIELD JERRY ROME NISSAN 413 746 2269 MICHIGAN FARMINGTON HILLS SUBURBAN NISSAN FARM HILL 800 242 8425 KENTWOOD FOX NISSAN GRAND RAPIDS 616 719 5750 TRAVERSE CITY TRAVERSE CITY AUTO PLAZA 800 852 6475 TROY SUBURBAN NISSAN OF TROY 248 649 2074 MINNESOTA BLOOMINGTON FELDMANN IMPORTS INC 952 837 6350 BROOKLYN PARK BROOKLYN PARK AUTOMOTIVE 763 765 1562 BURNSVILLE WALSER NISSAN 952 898 7306 INVER GROVE HEIGH LUTHER NISSAN 800 246 9984 MAPLEWOOD KLINE NISSAN 651 379 4325 MISSISSIPPI BRANDON GRAY DANIELS NISSAN BRAND 800 530 7989 GULFPORT PAT PECK NISSAN 228 864 6411 HATTIESBURG PETRO NISSAN 601 264 4411 JACKSON GRAY DANIELS NISSAN NORTH 601 899 7450 TUPELO CARLOCK NISSAN OF TUPELO 800 808 6481 MISSOURI HAZELWOOD BOMMARITO NISSAN INC 314 731 8270 SPRINGFIELD JOHN YOUNGBLOOD MOTORS 417 882 3838 MONTANA MISSOULA MISSOULA NISSAN HYUNDAI 406 721 1100 NEBRASKA OMAHA NISSAN OF OMAHA LLC 402 493 1945 NEVADA HENDERSON HENDERSON NISSAN 702 558 5974 LAS VEGAS AUTONATION NIS LAS VEGAS 702 262 0540 LAS VEGAS PLANET NISSAN 702 839 6138 LAS VEGAS UNITED NISSAN 702 207 8032 NEW HAMPSHIRE MANCHESTER TEAM NISSAN INC 603 634 4442 NASHUA PETER S AUTO SALES INC 603 579 5205 PORTSMOUTH PORT CITY NISSAN INC
26. Winter 2014 1 Blue Long Life ANTIFREEZE COOLANT Advanced Formulation For Aluminum And Cast Iron Engine Parts P N 999MP L25500P NONSILICATE TYPE BLUE FLUID i e ala E 4 50 50 PreDiluted Do Not Add Water 1 sem Ti WARNING HARMFUL OR FATAL IF S WALLOWED OR INHALED CONTAINS ETHYLENE GLYCOL Read other cautlonary Information on back panel 1 U S GAL 3 78 L 7 m p tis J m 5 gt 5 7 rt me mm a m fF 264 TE L a ven curri M RT q Laer 4 dis p m 1 P e F a a F 3 T F y we 5 t a n e e E kh a Fa 4 wu Amm JA Z E af E o F m T S ES m 8 li ss QU aem PC RU Er MEL uM H a NF arf u TW mas iic E ar ud Lat y T al 2 f E psc LAN LS iu xd i ue I t Fe 22 yu J r 4 di E W INT T ve E Er The phrase blew a head gasket has made its way into the common vocabulary How many folks truly know the literal meaning of that phrase however and likewise what causes the failure Not many At the very least the customer knows something is definitely wrong when steam is coming from under the hood This article should help your shop identity the distinctive components used i
27. Winter 2014 Volume 7 Issue 1 _ NISSAN _ Innovation that excites Cutting the Cable Keeping Cool Wiring Matters Brought to you by your local Wholesale Mechanical and Collision Repair Network Dealers Who Decides d Whats Right for YOUR Business Generic Insurance Company Collision Repair Professional f Dictate Parts Usage Quality OEM Parts Fd Pay Least Possible lI Quality Repairs Use OEM Parts as m gener Last Resort Sustainable Squeeze Shop Business Profits TS Let s Trade Parts Don t get squeezed Take control and do what s right for your shop and your customers Your customers deserve the precision fit function and structural integrity of parts designed by Nissan Nissan s Market Shield program helps provide the competitive pricing you expect Don t settle for anything less than Genuine Nissan Parts The Nissan Market Shield program is powered by eo collisionlink VALUTRAX gt ops weredBy O P S P Ts AK parts NissanUSA com Nissan Tech News Winter 2014 Nissan Tech News is a publication of Nissan North America No part of this newsletter may be reproduced without the express written permission of Nissan North America Group Publisher Christopher M Ayers Jr cayers automotivedatamedia com Editorial Director Bob Freudenberger bfreud automotivedatamedia com Managing Editor Tom Nash tnash automotivedatamedia com C
28. an cause unacceptable levels of and reduce the lla of the rotor 100 validation ensures proper balance and minimizes vibration Nissan Value Advantage brake rotors meet OE requirements and are mill balanced to 2 inch ounces Many competitive Aftermarket rotors can exceed 5 inch ounces Minimal Thickness Variation Brake pads must contact the rotor flatly dunng braking to avoid pedal pulsation As little as 0 0005 inches of thickness variation can result in pedal pulsation and noise Nissan Value Advantage brake rotors have a thickness variation of 0 0004 inches or less helping the rotor turn as true as possible inside the caliper resulting in fewer pulsation issues ts ES a P Henan up wo Haasan ou Gaal Dot and dreg a PET E LES I FM NISSAN 9
29. an repair manual and placing the vehicle Throttle Position Sensor Ga Sensor 1 TA NZ 24 45 90 135 Throttle valve opening angle deg Volts 2 0 Note the range of throttle position sensor voltages for normal behavior In this graph Accelerator Pedal Position APP Sensor D O Sensor 1 A O No Sensor 2 Accelerator pedal position sensor output voltage O 45 90 135 Accelerator pedal opening angle deg Here s the range of accelerator pedal position voltages into a diagnostic mode this method is much more difficult and cannot be used for all repairs It is best to get the proper scan tool for the job When intake air parameters are reset either by ECU replacement or updating it may be necessary to recalibrate the existing throttle by wire components Follow the Nissan repair manual for ECU replacement on the particular vehicle you are servicing For the 2011 Altima the throttle by wire components will have to relearn their positions Perform the following procedures in this order 1 Accelerator pedal released position learning 2 Throttle valve closed position learning 3 Idle air volume learning These procedures are found in the repair manual Accelerator pedal position is learned on this Altima by toggling the ignition switch ON for two seconds followed by 10 seconds of OFF then repeating the process Throttle valve closed position is learned by using the CONSULT III plu
30. ary cooling fans A non functional ECT will set a fault 116 at full cold start if its reading is not expected when compared to that of the Intake Air Temperature sensor IAT and other sensors On the other hand a fully functional ECT may set a fault PO118 when the system overheats to the point where the sensor thinks it cannot possibly be correct One final consideration is that the ECT cannot provide useful information when it is not submerged in coolant Verify that the system is full before chasing a phantom problem An always open thermostat will extend the duration of the warm up process long enough for the ECU to detect and set the MIL with PO128 However it cannot determine whether gt Water control valve Electric throtlla control actuator To radiator Oil cooler Nissan TechNews the thermostat is stuck closed because it is not physically monitoring the valve A stuck closed thermostat may correlate with PO118 so be sure to check its operation whenever that fault is stored As touched on above fan control is influenced by user requested A C performance This includes passenger zone controlled A C or heat When the A C autoamp control unit reports a driver requested target evaporator temperature the ECU will command the electric fans as described above to help air flow over the condenser fins In a similar fashion to how the ECU keeps track of idle position and driver requested accelerator input for electro
31. ay not SRTs Non Continuous Monitors Mode 6 Generic The ECM is always monitoring its sensors and outputs for problems Some testing is continuous and will set a code as soon as a problem occurs Other testing Is intermittent prm and requires certain conditions in order to start testing These intermittent tests are HO257 EGR SYSTEM KCVAPORATIVE SYSTEM known as System Readiness Tests SRTs in Nissan s terms or Mode 6 monitors in generic OBD Il terms A generic scan tool will often show whether or not the system test is complete and if it has passed In addition some generic scan tools GSTs will also have the results of the tests as well as the test limits or pass fail criteria This information may be in hex code or may be decoded by the scan tool It depends on the GST not the USBL 11 FHkEHiiEIEK PARAMETER Un Board Monitoring for Hon Continuous tests ID 4 10 A gt CID 44 SLIPPORTIHS S 16 RFPORTTHA FIII 18 Engine Wal 6H Ua Nissan does not Include Mode 6 data on the OEM side If you want hex code you ll need a generic OBD II scan tool Depending on the unit you may have no access raw hex code or converted human readable numbers EVAP SML LEAK POJADIP 1440 PURG FLOW P1447 PURG VOL GMV Use DIC Work Support to confirm the presence or absence of a problem This utility can be used before starting diagnosis o
32. ctors Schools and Colleges Technical Information Airbag Parts Replacement Recommendations Airbag Parts Replacement Recommendations Vehicle Sectioning Vechnezal Inauiries Maker Technical 2006 Nissan Altima Sedan In romation View Alrbag Replacement Chart Reset Parts Rop amp anenment Chant Partin Replacement BRecommendarons Select the model t view the aparopriate chart giat New Search For specific Nissan year model airbag replacement recommendations visit the I CAR website at www I car com and navigate to the page titled Airbag Parts Replacement Recommendations which provides airbag replacement recommendations in chart form once a visitor inputs year make model data courtesy I CAR VAI L A nn Winter 2014 23 Wiring Matters model specific service information should always been consulted before any work on and around the airbag system is started As examples Supplemental Restraint System SRS wiring should not be modified or disconnected unauthorized electrical test equipment and probing devices should never be used on the airbag system and all collision repair work pertaining to AABS should only done by a qualified Nissan facility and technician Nissan has also authorized the Inter Industry Conference on Auto Collision Repair I CAR to provide collision repair training to facilities and technicians that repair Nissan vehicles Visit www i
33. e Each airbag unit such as the 2012 Cube side curtain unit above is shipped in bubble wrap to protect it inside a perforated metal box designed to diffuse the impact if the unit is set off accidentally 22 Nissan TechNews suspended somewhere in the network between the A C panel and the IPDM Anello says analyzing network topology maps and relevant wiring diagrams led him to the cause They pointed me to which controllers were responsible for giving the final command The topology diagram showed that the only computers on the CAN network that had more authority over the IPDM to activate the A C clutch activation were the Body Control Module BCM and the Power Control Module PCM The scan tool confirmed the request was received by the BCM so the problem had to be upstream By closely looking at the PCM wiring diagram could see that the A C pressure sensor was directly tied to the PCM to monitor the operating range of the pressure within the A C system Using the CONSULT Ill plus navigated the PCM data stream and noticed that the A C pressure was at OV indicating low refrigerant pressure in the system The PCM never set a code but decided to keep the A C clutch off due to a perceived low pressure condition But the A C system was properly charged so there had to be an issue with the A C pressure sensor or its wiring Anello reasoned discovered that the PCM was actually sending the five volt reference to
34. ems are essential in today s computer controlled vehicles It s not enough for a computer to just respond to inputs it must have the ability to determine whether it has succeeded or failed Because no vehicle in the world is yet capable of self repair the ECU must also have the ability to communicate its findings and data to us the technicians who can fix vehicles In short on board diagnostics represent the ability to self evaluate and communicate data The more diagnostic work the ECU does the less the technician needs to do to solve problems In the Days of the Posthumously Named OBD I In the beginning of computerized engine management every manufacturer developed its On Board Diagnostics own form of self testing and communication It was entirely up to the manufacturer what should be tested how it should be tested and how the results of the tests should be communicated Many early Nissan self diagnostic systems used both a proprietary software hardware interface such as the CONSULT as well as a built in self diagnostic mode initiated without expensive tools that could be interpreted by counting LED flashes then comparing this output to a diagnostic trouble code DTC chart Thus those who were serious about Nissan repair could invest in a Nissan scan tool and more occasional technicians could still repair vehicles without Nissan specific tools Not all vehicle manufacturers however were as concerned with prov
35. for the presence of those within the heater core As many technicians hydrocarbons HCs in the cooling system Bring already know heater core leakage can be inferred the vehicle up to operating temperature stabilizing from information through the customer s complaint the cooling system if possible Using your five gas of residue on the inside of the windshield and a analyzer be careful not to allow any liquid coolant strong smell in the cabin You can also inspect for into the probe check for the presence of HCs in coolant leakage through the evaporator drain if the both the overflow bottle and the radiator snap leak is heavy enough the throttle to see if the number increases You Check the radiator cap for leakage using the can use this measurement to guide your repair pressure tester but be mindful that over time a discussion with your customer In many instances functional radiator cap will bed in to the neck of you cannot properly stabilize the cooling system the radiator Sometimes the cap will seal properly and must therefore proceed with repairs before and will vent pressure as necessary when on the performing this test In this case prepare your vehicle but may leak on the pressure tester A customer for the worst and hope for the best good quick test is to forcefully grip the upper hose With the head gasket s confirmed intact figure out why the vehicle overheated The most common cause is a loss of coolant due to leakage so le
36. iding an alternative method of diagnosis for non dealership techs In an effort to reduce emissions by making vehicles easier to repair the California Air Resources Board CARB mandated that all cars sold in the state use the SAE s OBD II standard starting with the 1996 model year OBD II then became a country wide requirement and now all vehicles sold in the US use OBD II compliant testing and communication OBD II Changes Things by Making Them the Same What is the OBD II standard OBD standardizes communication for the data link connector shape and pinout trouble codes and communication protocols OBD II allows any generic scan tool to connect and talk to any car This is good news for non specializing technicians One inexpensive tool can read the standard trouble codes that mean the same thing on any car regardless of make or model Nissan Goes Above and Beyond On the other hand generic OBD Il is not the best choice for Nissan diagnosis because Nissan has not limited itself to just the minimum OBD ll required information II compatibility is mandatory and is always available much like the built in self diagnostic capabilities on older Nissan vehicles However additional self diagnostic information is available on the OEM side Nissan specific diagnostic information 1081 o 5 If you re ever confused about the OBD II DLC pin numbering Just remember that the pins are numbered left to
37. inal Genuine Nissan Parts parts NissanUSA com actual prices set by individual dealers Keeping Cool slowly in traffic or under very heavy loads as when towing or driving uphill then check to make sure the cooling fans are operational Like any electric system problems can develop over time or after a collision Let s explore the way modern CAN equipped Nissan vehicles control their electric cooling fans In simple of terms the ECU determines whether the electric fans should be turned on using input from the Engine Coolant Temperature sensor ECT sensors for cam and crank position and for vehicle speed and the combination meter for A C considerations Once the ECU has decided that fans are necessary it will transmit the cooling fan control signal over the CAN bus to the under hood fuse box Intelligent Power Distribution Module Engine Room PDM E R which then provides an ON OFF duty cycle pulse to the cooling fan control module With the duty cycle pulse the control module creates Sometimes it can be hard to determine coolant flow from a diagram like the one above This layout of coolant flow for a 2011 Juke Turbo is an excellent diagnostic and repair aid homm gm oU From radiator y From reservoir 4 tank a target speed for the fan using a percentage of duty cycle voltage This control method effectively eliminates the need to distinguish between primary and second
38. is fully service ready for Nissan vehicle collision repair That choice boils down to how much control of the repair process a facility wants to have Any choice other than complete in house service readiness provides a temporary stop gap at best There s always an opportunity to improve service readiness Just don t let time and technology pass you by Innovation that excites Genuine Nissan Parts Just a Click Away Ordering OE parts is just a click away with the Nissan eSTORE Genuine Nissan OE replacement parts always deliver model specific engineering perfect fit and like new performance And now with our new Wholesale Accounts portal it s even easier to order Trust the Original Genuine Nissan Parts parts NissanUsa com When you are unsure how to fix it call the Nissan Installer Repair Hotline powered by Identifix 1 855 828 4018 Order by Make Model Year or VIN or Part Type Quick Order if you know the Part Numbers or VIN See recently searched vehicles Check order status Parts diagrams and VIN venfied part numbers for every vehicle system and sub system Current parts availability shown eSTORE Wholesale Valent Has ci Your pricing and discounts are readily visible Purchase and delivery preferences are always saved for your next order Make payments or set up billing quickly and easily Feature Nissan and Self diagnostic syst
39. matics and communication network topology diagrams Bob Augustine a diagnostic technician and technical training director for Houston based Christian Brothers Automotive says To fully service a vehicle today one must understand and be able to navigate the vehicle communication topology which includes wiring diagrams awareness of which communication networks are present and importantly how they are designed and actually interact A full function scan tool such as the Nissan CONSULT III plus scope digital multimeter breakout box and other tools can only do so much without them In contrast to the Nissan CONSULT HTA FAM ETR FAM ROND Ill plus scan tool aftermarket generic scan tools are more limited This is because to be price competitive aftermarket manufacturers choose to not license all datastreams and algorithms available to them Consequently generic scan tools may use a built in communication network protocol that is not fully compatible with all of the communication network and gateway protocols used by Nissan vehicles Augustine continued Nissan network topology and communication protocols have evolved over time A 2001 model can be very different from a 2008 2013 and future version Earlier Nissans are primarily K Line later models added MSCAN and more recently HSCAN protocols have been used he tells us Controller area networks CANs have been on some vehicles for a long time a
40. mparing it to the service manual s specification for thermostat opening temperature Winter 2014 11 In some engine designs as found in the Altima and Juke Nissan uses a secondary thermostat called the water control valve to further expedite engine warm up In this two stage design the water control valve restricts coolant cycling to only the water pump and cylinder head Once open coolant is allowed into the engine block and is controlled by a traditional thermostat It may be confusing but getting the engine to operating temperature faster is better for both fuel economy and reduced emissions Be sure to check the shop manual for this thermostat water control valve design if you are unsure There is no official replacement recommendation for thermostat maintenance because a Genuine Nissan part is very reliable However it is typically best practice to replace a thermostat after an overheating event because the wax capsule inside may be damaged Radiator Reservoir tank Thermostat housing K 1 Uses Engine Water pump oil cooler UIT Cylindar head Cylinder block NNN Diagnosis of Radiator Fan Control Your cooling system evaluation should include verification of fan operation With the exception of most Nissan trucks Pathfinder Frontier Armada and Titan all cooling fans are electronically controlled Nissan trucks for the most part use a mechanical radiat
41. n Nissan cooling systems how to inspect them proficiently when to service or repair them and where to begin when the customer drives in What to Look for When a Customer Arrives You can save yourself a lot of time by figuring out from the customer where to begin In other words do yourself the favor and find out why the car is on the tow truck in the first place Did the customer see steam from under the hood Did the warning indicator illuminate Is there coolant drip on the driveway Or none of the above The customer is driving in for his or her yearly check up Ultimately using the customer s story to determine a jumping off point for diagnosis will keep you close to the initial problem In most cases the problem will lie within one of two straightforward issues maintenance or repair The Cooling System Pressure Check To start with let s discuss inspecting cooling systems in need of service It s best to develop a standardized cooling system inspection In our experience whenever a vehicle overheats we want to determine whether or not the head gasket has failed because engine repair Winter 2014 g Keeping Cool may push the vehicle beyond repair in the fluid along cooling hose clamps water pump seals customer s financial sensitivity The most reliable radiator seams oil or transmission fluid coolers way to determine whether the head gasket is and elsewhere Some leaks cannot be seen like compromised is to check
42. nic throttle control the ECU also records each incremental request for cooling fan operation to generate a final desired fan speed Finishing the Repair Proper Cooling System Service and Quality Control Now that you ve finished replacing a cooling system component that required draining the coolant let s discuss the official way of filling the coolant and stabilizing the system First figure out what the proper coolant is for this particular Nissan The newest vehicles will utilize a factory filled pre mixed Super Long Life coolant that is blue in color Many older cars except the GT R require the Nissan full strength green coolant that must be diluted to 50 strength with water Refer to the service manual Nissan coolants are proprietary ethylene glycol blends that are silicate free and contain the appropriate lubricants formulated and tested specifically with Nissan engine materials When a shop uses the generic green or gold coolants the corrosion inhibiters are different and the formula is not tested for use specifically with the silicon rubber or aluminum found in Nissan engines You may ultimately introduce more problems or accelerate internal wear when using a generic coolant so don t do it You will find that your local Nissan dealership has Genuine Nissan antifreeze The water control valve looks similar to a thermostat in almost every respect his one opens at a slightly lower temperature though 171 deg
43. nomy by smoothing out acceleration You will notice this normalization distinctly when feathering the throttle to engage the clutch of a manual transmission In fact the idle control behavior will raise throttle as the engine approaches stalling when engaging the clutch in first gear making that catch point throttle feathering technique obsolete Above all throttle by wire enables the advanced cruise control and safety features of vehicle stability control On Nissan vehicles equipped with Intelligent Cruise the computer is capable of adjusting the throttle up and down to match speeds with another vehicle detected by its range finding lasers If the vehicle is equipped with Distance Control ASSIST DCA or Backup Collision Intervention BCI the throttle pedal will actually attempt to push up the accelerator if it detects an imminent threat prompting the driver to move his foot from the gas pedal to the brake ABS and vehicle stability control will override driver requested throttle input when a slip is detected Suffice it to say that each of these advanced systems have already been the sole subject of entire Nissan Tech News articles due to their complexity Diagnosis and Work Support Like anything else on a car it is possible for a throttle by wire component to require service Diagnosis and adjustments are performed with the CONSULT III plus While it is technically possible to do some repairs on some vehicles by following the Niss
44. o different potential voltages for accelerator position The ECU can monitor for logical malfunctions when one sensor reports outside of its capabilities Put simply your customers are not going to have a reliability concern when it comes to throttle by wire It would require two separate potentiometers within each sensor to fail simultaneously or a wiring harness failure to create a drivability malfunction The master warning indicator will illuminate if a problem is detected Advantages Despite the complications involved with learning and understanding new technology Nissan recognizes the importance of throttle by wire for current and future engine management Let s discuss some of the major advantages of a system that replaces the throttle cable and idle air control motor design Cutting the Cable First there is no auxiliary idle control valve that can become restricted or malfunction Likewise there are no external moving parts like a cable or spring that could develop mechanical issues from weather or wear Also engine performance is improved because the ECU can snap to 100 throttle faster than a pedal could pull the cable through its full travel If the speed of the accelerator pedal is determined to be great enough the computer can extrapolate that the user command is WOT and provide it more quickly than the driver s foot ever could Likewise the ECU can normalize slight pedal travel variations and improve fuel eco
45. ols restraint system parts and wiring must be conducted all parts identified as faulty must be replaced with new parts Examples include undeployed airbags steering wheels wiring harnesses connectors terminals seat belt assemblies seat mounting points sensors and others In both cases Nissan emphasizes that new parts are the only option New aftermarket replacement parts provide no guarantee that they will perform identically to Nissan parts while used or salvaged replacement parts carry a substantial risk and liability for the collision facility doing the collision repair Given the important function that airbag systems serve a visual inspection for damage is insufficient Full testing of these systems is essential and required by Nissan Similar to the A C case above the CONSULT Ill plus scan tool network topology maps and circuit wiring diagrams for the pertinent circuits are the primary tools to testing diagnosing analyzing understanding and planning a correct complete safe repair Increasing vehicle complexity loads body shops with more responsibility and liability to ensure that a safe complete repair is provided But in today s marketplace where a glut of information butts head with available time shop managers face a difficult choice They can become capable of in house electrical diagnosis and repair or they can utilize a mobile expert so equipped or rely on another facility e g Nissan dealership that
46. one xD i 7 Tes ere 522 LN E TEE _ 1 2 d PET p 2 lt lt L 1 ur g Lien tul 4 437 3717 T n T TTE PS the scan tool he selected the topology network view Network view is a feature that provides a technician with a quick visual mapping of the entire vehicle using different colored icons for each control module and the different types of communication networks onboard to visually denote if they have current history or no codes stored in memory Anello tells NTN I could see that there were no trouble codes within the PCM or any of the other controllers Anello then accessed www nissan techinfo com to print a wiring diagram of the A C system and search for related technical service bulletins The wiring diagram helped me understand how the A C system was designed to operate once the A C button was pressed was surprised to see that the Integrated Power Distribution Module IPDM was in charge of controlling A C relay operation but it was not grounding the relay when the A C on command was sent from the A C panel I then used the CONSULT III plus to navigate to IPDM data and saw the IPDM was not receiving a request to activate the A C relay This request was eT E d ya pi FIM nia E T Wo LER ad m WF K K di p ERA dus 3 Nissan ha a umber of SKUs for Ordering the correct airbag IS critical to minimizing cycle tim
47. ones Modules sensors and the terminals and wiring that connect them are primary areas of damage when impact occurs For body shops in particular the proliferation of electronics presents a dynamic and spiraling challenge The traditional collision and mechanical repair realms are fusing New vehicles equipped with innovative electronics crash too and then need repair often before they are brought to a dealership let alone an independent facility for mechanical service The learning curve to keep pace seems like an inbound fastball ready to blow by traditional competencies Coping can feel overwhelming Put bluntly body shops cannot provide complete repair today without an understanding of intravehicle communications network topology wiring diagrams scan tools and more We must be able to discern and correct electrical damage sustained in an accident avoid electrical and electronic related comebacks and nurture a positive brand experience for customers For modern forward thinking facilities and technicians going ostrich is not an option Think like an Engineer Electrical systems need to work as the engineers who designed them intended and technicians must know why they work the way they were designed says Peter Orlando a technician The Color Code Legend Circuit Patterns A Power and ground all the time B Switch to ground C Switch to power D Analog output Voltage Conditions Power all the
48. ontributing Editors Bob Chabot bchabot automotivedatamedia com Paul Cortes pcortes automotivedatamedia com Phil Fournier ffournier automotivedatamedia com Christian Strohm cstrohm automotivedatamedia com Art Director Christopher Ayers Ill ayersc3 automotivedatamedia com Nissan North America Project Manager Leslie Ohrin WMPProgram nissan usa com Nissan North America Technical Content Advisors Dave Willson dave willson nissan usa com James Von Ehr james vonehr nissan usa com Editorial and Circulation Offices 134B River Road Montague NJ 07827 Phone 330 620 3929 www automotivedatamedia com Caution Vehicle servicing performed by untrained persons could result in serious injury to those persons or others Information contained in this publication is intended for use by trained professional auto repair technicians ONLY This information is provided to inform these technicians of conditions which may occur in some vehicles or to provide information which could assist them in proper servicing of these vehicles Properly trained technicians have the equipment tools safety instructions and know how to perform repairs correctly and safely Ifa condition is described DO NOT assume that a topic covered in these pages automatically applies to your vehicle or that your vehicle has that condition Contents Features Volume 7 04 Cutting the Cable A look at Nissan s Electronic Throttle
49. or fan driven off the crankshaft pulley by means of a serpentine belt Inspect the drive belt for cracks and proper tension as part of your cooling system evaluation You should also check for play and roughness in the water pump bearing itself An electric fan that does not spin for whatever reason will fail to provide the necessary supplemental airflow over the fins of the radiator when the vehicle is not traveling at highway speed thus causing an overheat condition Use the customer complaint to direct your diagnosis If the vehicle overheats when the car is idling going Turbocharger A AA ARA RA M Healer Electric throttle control actuator When a vehicle is cold both the thermostat and water control valve are closed and coolant remains within the cylinder head only It can be bled off to the heater core when commanded 12 Nissan TechNews E 2 NISSAN Innovation that excites OUR COOLEST IDEA YET Optimal tube and fin configuration provides ideal coolant flow and efficient heat transfer CV oil coolers included where required INTRODUCING NISSAN Al standard VALUE ADVANTAGE RADIATORS HE Radiators are a common replacement in front end collisions Your customers deserve a product that meets Nissan OE standards for fit form and function Value Advantage Nissan validated performance at very competitive prices Trust the Orig
50. r after a repair vehicle The CONSULT will indicate test status and whether it passed or failed but does not display test results and limits Therefore if you think raw Mode 6 data will be useful to you a GST should be your tool of choice at least for this one function DTC SRT Confirmation CONSULT II DTC Work Support CONSULT III Plus The CONSULT may not have raw Mode 6 data but it does have something even better DTC SRI confirmation These are utilities that allow you to force a non continuous test to run by starting the utility and following the prompts to create the necessary conditions to run the SRT This is a great way to confirm a problem is current happening right now before embarking on further diagnostic Active Test VOL CONTV Current status 1050 rpm In this photo an Active Test is being used to command the EGR full open at idle The idle speed was not affected by the EGR activation so we know that there is likely a problem with either the valve or the passage 5Jstep vC BPA P1491 HO2S1 PURG VOL CNA P1444 Use DIC Work Support to confirm the presence or absence of a problem checks It s also a great way to confirm repairs SRIs will also run while the car is in use even without using the SRT confirmation mode However the car must be driven in a way that will trigger the SRT to run Information on how to drive to enable an SRT to run can be found in the manual
51. rectly to a valve within the throttle body using linkage or a cable When the driver s foot is off the pedal the butterfly valve is closed against its stop You will find an Idle Air Control Valve IACV or a similar auxiliary air input path that the ECU can use to bypass the throttle plate These days all Nissan vehicles come equipped with fully electronic throttle control systems and this article will introduce you to Nissan s implementation of throttle by wire How it Works In the most common throttle by wire design from Nissan instead of a cable there is an electronic throttle valve actuator that is commanded by the ECU and physically opens or closes the throttle valve Because there is no cable tension position sensors located on the accelerator pedal and on the throttle actuator give equivalent data to the ECU When the driver moves the accelerator pedal the Accelerator Pedal Position sensor APP reports the movement to the ECU which then commands the throttle valve actuator to rotate the throttle plate open or closed Instead of a secondary idle valve the ECU can control the throttle plate as needed to regulate idle The location of the throttle plate is reported by the Throttle Position Sensor TPS and is some percentage of a reference The ECU learns over time what the throttle plate position should be at idle This learning capability allows the ECU to accommodate unavoidable changes to air intake flow from carbon
52. rtant to follow the service manual procedures for these vehicles cooling designs As Nissan improves its engines the cooling system must necessarily follow along with improved performance Vehicle manufacturers must take care with the double edged sword that is high engine temperatures On one hand higher heat means fewer emissions and greater efficiency but on the other is mechanical failure 5 i G urs DT qur g Winter 2014 11 Feature Wiring Matters Network topology wiring diagrams and scan tools are essential for modern collision repair CAN Diagnosis MACRO V CAN Result es bd E eoe EE el I Corm mun aan lie ados matis B P Present error 4 Hot detected Ed Start Paint AV End Point Et m MULTI BV o Pest error Hat detected or mol metalled Hat dinosed r 4 _ F HER p ei uc LA m gui ni name TER E r gt EH zt nut uar FAL we woe z E 1 a nandi um parari EH art x cx yx B DT Fe n pen ri Not only are the electronics that enable the computerization of a vehicle vulnerable to heat vibration and water infiltration many of the components are located in crush z
53. s navigating to WORK SUPPORT and choosing the CLSD THL POS LEARN button This must be done with the engine cold ECT lt 77 deg Idle air volume relearn is the last step because it requires the engine to be at operating temperature Turn off all accessories and allow the vehicle to idle Using CONSULT III plus navigate again to WORK SUPPORT and choose IDLE AIR VOL LEARN Press start and after about 20 seconds the idle volume learn will be complete You may be required to perform some or all of the above procedures when replacing a particular component For example the same Altima requires 2 and 3 to be done after replacing the Electronic Throttle Control Actuator Because Nissan has an in house remanufacturing program to ensure the highest reliability the TPS is manufactured in conjunction with the throttle actuator this is a common repair If the Service Engine Soon MIL light is on and your scan tool indicates a malfunction with the TPS by showing DIC P0122 or PO123 follow the Nissan repair manual for diagnosis Verify that appropriate grounds harness integrity and the throttle position sensor signals are out of specification before replacing the throttle actuator It should be known that Nissan has an official remanufacturing program for its electronic throttle bodies guaranteeing both high quality and excellent reliability Do not be tempted to replace the throttle position sensors with questionable salvaged par
54. s i O aaoo been detected at least twice two trip If a one trip Normality testing is used to find opens shorts DIC set the MIL will turn on immediately shorts to power sensor faults and faults in the two trip DIC fault is detected a pending code will monitored system In other words normality testing can find any problem that leads to the circuit being out of known good range Rationality testing is a little more complex and it requires the ECM to know a lot more about its world For instance if engine speed is 700 rpm AF ALPHA is 10096 and TPS is 75 you and I know that there is likely a problem with the TPS If the throttle is 4 open the engine speed should be well above 700 rpm Using rational testing and more complex programming the ECM knows this too Stated another way even though the TPS resistance is normal it s normal for the throttle to be 34 open sometimes right the ECM is able to make judgments about the accuracy of the TPS report based on what it knows about the relationships between sensor readings That s The proprietary Nissan 14 pin DLC is often rationality testing found behind the fuse panel cover Functionality testing is used for actuators where the ECM is both controlling and monitoring the actuator The ECM can be either directly monitoring the actuator via a position sensor or it may be monitoring another sensor capable of observing the result of the actuator s function A sy
55. s intravehicle networks Newer protocols like High Speed CAN HSCAN have been on some vehicles since the 2003 model year and were mandated for 2008 and newer vehicles In addition there are several Wiring diagrams allow a technician to think like an engineer because they illustrate the system strategies that control vehicle systems controllers Sensors and more courtesy Nissan color added by Auto Tech on Wheels Winter 2014 21 Wiring Matters other communication standards in use today and others emeroing that enable more data to be exchanged more efficiently For example within five years Nissan intends to deploy Wi Fi network architecture that will enable advanced driver assist safety possibly even self driving functionality Collision repair facilities and their technicians must keep pace Case Study 2008 2 5L Nissan Altima with No A C compressor Engagement John Anello a mobile diagnostic technician and owner of Auto Tech on Wheels services both collision and mechanical service repair facilities He recently shared an example of how using the right tools including network topology and wiring diagrams helped him diagnose a 2008 Nissan Altima 2 5L engine that after a collision had no A C compressor engagement The first thing Anello did was to connect a Nissan CONSULT Ill plus to the Altima to confirm the findings of the collision shop Using w T COMER E wae
56. stem with an electronically controlled EGR valve and an EGR temperature sensor is an example of this type of functionality testing The ECM Must be Tripping Regardless of whether a Normality Rationality 20 Nissan TechNews be stored but the MIL will not illuminate unless the fault is detected on a second trip One trip DTCs faults are typically problems that might cause symptoms for the driver so the MIL is illuminated right away Faults that may damage the catalytic converter are even higher priority and will cause the MIL to flash Two trip DTCs are lower priority faults so they are verified before unduly worrying the driver What does the MIL Say Another way the generic and Nissan sides are similar is in the way the MIL is controlled to alert the driver of system malfunctions The MIL has only two states on and off blinking being a combination However the MIL will tell us far more than two things if we know how to listen Key On Engine Off Bulb check Solid light confirms ECM s ability to turn MIL on all OBD II Flashing light indicates System Readiness Tests SRTs are incomplete 2005 and newer Nissan only Key On Engine Running MIL off No faults failure a two trip DTC current fault but the SRT that would expose the fault hasn t run yet Key On Engine Running MIL on Current fault Past fault but has not completed three successful trips yet DYPLHI E
57. t s consider this first Obviously skip this step if there is no loss of fluid Nissan recommends a commercially available tool for pressure testing the radiator cap and the complete cooling system You will need to acquire the appropriate tester adapters Consult the service manual for the appropriate pressures to apply this is usually around 23 psi for the radiator and engine and around 13 psi at the cap Using too much pressure can cause damage to the water pump or other internal seals or force leaks that would not be caused under real world circumstances Use common sense when looking for leaks under L ad pressure Search for existing coolant crust as evidence of prior leaks or look for fresh If your pressure tester doesn t have the correct adapter you can acquire the Nissan special service tool J 33984 A 10 Nissan TechNews and see if coolant spills into the overflow bottle If so the cap is not likely sealing properly Be certain that the fault lies with the cap rather than with a partially melted or defective radiator neck When a leak is found proceed with repair following the appropriate Nissan manual It is also best to replace older coolant hoses and clamps that are disturbed when doing coolant repairs within the same vicinity Use Genuine Nissan parts to guarantee that the replacement component will have the best possible fitment and service life We will discuss this later but be cer
58. tablish a vacuum that removes old coolant this antifreeze has a higher pH than Genuine and replaces it with new No burping Nissan coolant 16 Nissan TechNews Gone are the Days of the Yellow Coolant Funnel The official method of servicing modern Nissan coolant systems is by means of a vacuum venturi Air Lift device These devices are commercially available but Nissan special tool J 45695 can also be purchased to perform proper cooling system services When properly using the Air Lift you will be able to quickly and efficiently exchange nearly all of the old coolant and replace it without introducing air bubbles Non Standard Cooling Systems Nissan hybrid vehicles and the Nissan LEAF have cooling systems that are in many ways different from what we discussed above Because Hs vade Don t be afraid to try the Air Lift Not only is it the device Nissan recommends for coolant service but once you try it you ll never go back to slower drain and fill methods This particular lift has wheel weights attached to the suction end for convenience P T4 Lr 12 1 hybrid vehicles require cooling for both the internal combustion engine and the high voltage inverter an additional cooling system is necessary Likewise the Nissan LEAF must cool the inverter but does not have to deal with high combustion chamber heat We can only begin to scratch the surface in this article but know that it s impo
59. tain to follow the Nissan service procedure for servicing engine coolant Using incorrect fluid or incomplete service methods may result in additional cooling system problems Diagnosis of Coolant Flow Control In some cases the vehicle does not overheat because of a fluid leak but rather due to a cooling system management malfunction Your lt may be tempting to use a generic screw clamp but Genuine Nissan spring clamps will increase clamping force as the hose breaks In reducing leaks and follow up visits from the customer standardized cooling system check should also include inspection of the thermostat operation and fan cycling Many modern Nissan vehicles have computer monitored thermostat and fan operation so you can expect a MIL with useful information available from the CONSULT See below for examples While leaks may be straightforward thermostat malfunction and erratic fan operation can create headaches when you are trying to pinpoint cooling system problems Let s discuss thermostat operation first Because engines operate best at fairly high temperatures coolant flow into the radiator is restricted by a physical valve called the thermostat allowing heat to build up rapialy You might find a vehicle that has no leaks but overheats because the thermostat is stuck in the closed position thus defeating the radiator Verify a stuck thermostat without removing the unit by observing engine block temperature and co
60. the IPDM but the voltage was not Training OEM Recognition Training About I CAR I CAR Training Technical Information Advantage Ori me Tap Technical Lrugigirigs Technical Information exiting out of the IPDM indicating the IPDM had an internal board problem When I flexed the IPDM heard the A C clutch engage and had the culprit When this car was involved in the collision the IPDM likely got damaged during the impact Anello concluded There was no visible damage to the unit but the shock was enough to create an internal open circuit There were no codes in the network for the scan tool to point me to any areas of concern but knowing how the network worked and how to read wiring diagrams and scan tool data the problem was solveable Airbag Repair and Replacement Guidelines Nissan vehicles are equipped with the Advanced Air Bag System AABS The AABS monitored circuits include the Airbag Control Unit ACU crash zone sensors satellite sensors front air bag modules side air bag modules curtain airbag modules pre tensioners other pressure sensors and all related wiring Airbag deployment is based on information from these sensors the crash severity and whether the occupants are belted or unbelted Nissan cautions that all warnings and procedures contained in owners manuals and repair guidelines apply and must be followed In particular Nissan United States I CAR Volunteers amp INstru
61. time Ground all the time Ground when the circuit is complete open circuit voltage when it is not Power when the circuit is complete Indirect path to ground when it is not Analog Repetitive to ground Repetitive to power Repetitive analog To learn how to visualize and understand a wiring diagram to become more efficient in collision repair consider training from industry experts familiar with the rules basic building blocks and fundamental patterns of Nissan electrical circuits systems and topologies courtesy Automotive Electronics Services Inc Winter 2014 19 Wiring Matters and owner of Automotive Training Technologies LLC Like other automakers Nissan scan tools and service information can be your friends but they don t necessarily fix every problem oimply put neither of them explains the operational strategy that engineers intended But Nissan communication network topology diagrams and wiring schematics do They fill in the blanks that service information may not explain or which a scan tool cannot pinpoint Technicians today must be critical thinkers trained to be conversant with accessing understanding and using network topology wiring diagrams and other essential tools For example intermittent electrical problems after a collision present unique challenges Technicians must be capable of testing devices wiring and systems without disturbing connections In addition failure
62. ts or aftermarket knock offs Finish the job right using Genuine Nissan remanufactured parts High Performance Throttle by Wire There is yet another important development for throttle by wire but instead of electronically controlling throttle plate position Nissan s Variable Valve Event and Lift VVEL adjusts intake valve lift as needed This is not the same as variable intake cam timing With VVEL the throttle plate is significantly more open at all times and makes greater air pressure available at the back of each intake valve Then when the accelerator is pressed intake valve lift is increased to directly increase flow into the engine Engines without VVEL have limited air available in the plenum when the throttle plate is closed Thus when the throttle plate is opened there is a delay while air rushes in to fill the plenum and finally becomes available for intake into the cylinder Of course wide open throttle is not often requested during initial acceleration which means further restriction on intake air for non VVEL engines The end result of VVEL design is better fuel economy from improved valve overlap control better throttle response decreased emissions and less piston load from decreased intake vacuum The precision capabilities of computer management and execution are the future of vehicle design As usual Nissan is pressing forward with reliable systems that improve its vehicles efficiency and effectiveness

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