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Around The Clock Freightliner Group 6608 N. Western Ave. #617 Oklahoma City, OK 73116

Address Service Requested

PRESORTED STANDARD U.S. POSTAGE PAID

Oklahoma City, Okla. Around The Clock Freightliner Group

WNED O PRE-UCKS! TR

E! T INSID 'EM OU CHECK

July/August 2009

A publication of The Around The Clock Freightliner Group, LLC

Already in the enviable position of having both the Freightliner THAT'S WHY THE ATC FREIGHTLINER GROUP and Western Star franchises, we're also constantly on the IS HERE ­ 24 HOURS A DAY, 7 DAYS A WEEK. lookout for new products and services to make your trucking operations more efficient and productive. We employ the most current technologies and techniques plus we have a staff of qualified technicians ready "around the clock" to take care of your repair and service needs. We sell, use and warrant OEM and other name brand parts that are engineered to withstand the extremes of commercial vehicle use. Our affordable pricing and national warranties assure that you get the best products and services at the lowest possible cost. With state-of-the-art facilities, factory-trained technicians and the latest technology, you, our THE AROUND THE CLOCK valued customer, can rest assured, the truck service and repair done in an ATC shop will be done FREIGHTLINER GROUP, LLC quickly, correctly and at the lowest possible cost.

OKLAHOMA CITY FREIGHTLINER · WESTERN STAR PARTS

CUSTOMER SATISFACTION

DALLAS FORT WORTH OKLAHOMA CITY TULSA

OKLAHOMA CITY

Charles Bowen President, CEO John C. Miciotto Vice President, COO

5301 I-40 West Local 405.942.8827 Toll Free 800.999.6511 General Manager: Drew Burk 405.917.2061 [email protected] Parts Manager: Bob Norman 405.917.2077 [email protected]

SERVICE

Service Manager: Bobby Boyd 405.917.2037 [email protected] Body Shop Supervisor: Larry Goostree 405.917.2049 [email protected]

USED TRUCKS

Manager: Jim Beaty 405.917.2088 [email protected]

NEW TRUCK SALES

Manager: Drew Burk 405.917.2061 [email protected]

4200 Port Boulevard (Corporate Location) Main 24/7 Location @ I-20E and Bonnie View Road (Between I-35E & I-45 in South Dallas) Local 972-225-4300 Toll Free 800.580.2620 General Manager: Bob Acker 972.225.4644 [email protected]

DALLAS FREIGHTLINER · WESTERN STAR

DALLAS

TULSA FREIGHTLINER · WESTERN STAR PARTS

TULSA

PARTS

Parts Manager: Chad Pennington 972.225.4546 [email protected]

5104 West 60th Street Local 918.445.5300 Toll Free 800.725.5312 General Manager: Don Freeman 918.447.4008 [email protected]

SERVICE

Service Manager: Jason Graham 972.225.4580 [email protected]

USED TRUCKS

Manager: Doug Phillips 972.225.4311 [email protected]

Parts Operations Manager: Jason Mitchell 918.447.4016 [email protected]

NEW TRUCK SALES

SERVICE

Manager: Mark Lamont 972.225.4330 [email protected]

Service Manager: David Housh 918.447.4035 [email protected] Body Shop Supervisor: Terry Morrow 918.447.4117 [email protected]

DALLAS FREIGHTLINER · WESTERN STAR

USED TRUCKS

Manager: John Blevins 918.447.4071 [email protected]

NEW TRUCK SALES

Manager: Don Freeman 918.447.4008 [email protected]

MUSKOGEE BRANCH

3040 Irving Boulevard Satellite Location (Near I-35E in Central Dallas) Local 214.631.2620 Toll Free 888.287.0176 General Manager: Bob Acker 972.225.4644 [email protected]

2950 N. 32nd Street 918.687.0133

PARTS

FORT WORTH FREIGHTLINER · WESTERN STAR PARTS

FORT WORTH

Parts Manager: Chad Pennington 972.225.4546 [email protected]

SERVICE

Service Manager: Jason Graham 972.225.4580 [email protected]

1804 NE Loop 820 Local 817.626.7090 Toll Free 800.580.9101 General Manager: Paul Burk 817.625.3305 [email protected] Parts Manager: Randy Benhardt 817.625.3316 [email protected]

USED TRUCKS

Manager: Doug Phillips 972.225.4311 [email protected]

NEW TRUCK SALES

Manager: Mark Lamont 972.225.4330 [email protected]

SERVICE

ATC GROUP

Parts General Manager: Robert Thompson 405.945.3593 [email protected] Service General Manager: Jim King 405.945.3586 [email protected] Corporate Used Truck Manager: Pat Johnson 972.225.4320 [email protected] Corporate New Truck Manager: Jeff Bowen 972.225.4380 [email protected] Sales Manager ­ Full Service Leasing & Contract Maintenance: Andy Baker 214.579.6409 [email protected] Tech Talk: [email protected]

Service Manager: Michael Morrison 817.625.3327 [email protected]

ATC WRECK REPAIR CENTER USED TRUCKS

Body Shop Manager: Craig White 817.625.3342 [email protected] Manager: Mark Suter 817.625.3341 [email protected]

NEW TRUCK SALES

Manager: Paul Burk 817.625.3305 [email protected]

wheels & deals parts/accessories

10 1 Fuel/Water Separators ABP/N122-R50418 in 30 micron primary; Include advance engineered fibers

the filter media providing strength & durability

ABP/N82-7622 2 Wiper Bladesmolded rubber wiping elements · · 22" blades have

$14.95 Each $2.85 Each

9

6 5

Built-in connectors for E-Z application · Razor sharp edge assures streak-free performance

3 Lube Filters DN/P552100 · Spin-on · Full-flow · For popular Detroit Diesel applications 4 AM/FM High-Power CD Receivers panel PSO/CQCP134-1A · 4 x 50 watt max power · Front

mounted MP3 jack · For Freightliner models

$13.35 Each

11 7 12 1 8 2

5 ABS Sensor Kits TDA/R955342 · 6.6' cable lead · Right angle, 90 degree, pencil-type 6 D-2 Governors BW/275707NPSI · With pressure range of 105-125

TM

$114.55 Each $41.55 Each $31.95 Each $12.65 Box

· Direct-mount or remote-mount installation · Genuine Bendix quality built to last

7 Disposable Nitrile Gloves·PEX/09185 · Textured fingers for grip · Large 100 count

· Also available in Medium & X-Large sizes

TM

Pedal Clutches TDA/R152705 8 15.5" Liteceramic twin disc · 7-spring, 2"-10 spline · Dampened

· 3600 lb. plate load, 1700 lb. ft. max. torque

Brake 9 Disctype rotorRotors WWD/54770-P65 · Hat · 15" diameter, 1.435" thick

· For 6.75" bolt circle, 6 hole

$794.75 Each $117.75 Each

10 AC Compressor ABP N83 304543 4 3 11 Air Drier ABP N83 319744 12 700CCA Battery EPM AE7T31

$175.00 Each $29.99 Each $79.50 Each

Offer expires Sept. 30, 2009 Items pictured are for illustration purposes only and may not depict actual part number.

MORE POWER TO PULL!

TIES ULL CAPACI I EP AXIMUM LTN 100,000 LBS. ur M OF UP O at ATC. Call yo

g! able Now availler for info and pricin local dea

STRONGER, SAFER AND SIMPLER

SERIES 8000 WINCHES FROM DWS INTERNATIONAL INC.

Buy online at www.atcfreightliner.com

wheels & deals July/August 2009 · Page 2

12.7 liter, 455 horsepower Detroit Diesel ­ Standard Eaton Fuller 10 speed manual transmission ­ Standard Meritor front and rear axles ­ Standard Freightliner durability and quality ­ Always

Available as truck or tractor, offering a day cab and three SleeperCab configurations. Call or come by today for more information and a test drive.

FLDSD

Oklahoma City Freightliner · Western Star 1.877.621.0428 Local: 405.942.8827

THE AROUND THE CLOCK FREIGHTLINER GROUP, LLC

5301 I-40 West Okla. City, OK 73128

Tulsa Freightliner Dallas Freightliner · Western Star · Western Star 1.888.395.9947 1.800.580.2620 Local: 918.445.5300 Local: 972.225.4300

5104 West 60th Street Tulsa, OK 74107 4200 Port Boulevard. Dallas, TX 75241

Dallas Freightliner · Western Star 1.888.287.0176 Local: 214.631.2620

3040 Irving Blvd. Dallas, TX 75247

Fort Worth Freightliner · Western Star 1.888.704.0002 Local: 817.626.7090

1804 NE Loop 820 Fort Worth, TX 76106

Page 3 · July/August 2009 wheels & deals

THE AROUND THE CLOCK FREIGHTLINER GROUP, LLC

TIRED OF PUSHING FLOOR MOUNTED BRAKE AND CLUTCH PEDALS IN YOUR TRUCK ALL DAY? WESTERN STAR SUSPENDS THEM TO PREVENT STRESS AND STRAIN ON YOUR KNEES AND CALVES. NOW THAT'S COMFORT.

Oklahoma City Freightliner · Western Star 1.877.262.4700 Local: 405.942.8827

5301 I-40 West / Okla. City, OK 73128

THESTAR

Tulsa Freightliner · Western Star 1.888.395.9947 Local: 918.445.5300

5104 West 60th Street / Tulsa, OK 74107

Dallas Freightliner · Western Star 1.800.580.2620 Local: 972.225.4300 Dallas Freightliner · Western Star 1.888.840.5113 Local: 214.579.6445

4200 Port Boulevard / Dallas, TX 75241

3040 Irving Blvd. / Dallas, TX 75247

Fort Worth Freightliner · Western Star 1.888.704.0002 Local: 817.626.7090

1804 NE Loop 820 / Fort Worth, TX 76106

wheels & deals July/August 2009 · Page 4

1 BULLET

1 360

1. Where should a customer go for their Sterling parts (including proprietary parts), service and sales needs, or their Detroit Diesel service and parts needs? ATC Freightliner Group dealerships 2. How long will Sterling continue to supply proprietary Sterling parts, light commercial vehicle propriety parts and legacy Ford parts? Proprietary Sterling parts will be available for 10 years. Proprietary light commercial vehicle parts will be available for 7 years. And all legacy Ford parts will be available for 3 years. 3. How will warranty claims on current Sterling product be handled? Warranty claims will be filed just as they are today through any Sterling service dealership or through a Detroit Diesel Distributor for DDC and Mercedes engines. 4. Who will now be authorized to do warranty repairs on Sterling product? All current Sterling Truck dealers' service facilities will continue to be authorized to perform warranty repairs for Sterling products. 5. Will my warranty coverage, and extended coverage, be impacted by this decision? No. Any warranties or extended coverages will be honored by existing Sterling or DDC authorized repair facilities. 6. How long do we anticipate Sterling medium and heavy duty production to continue? Production of medium and heavy duty Sterling product will continue until the end of March 2009.

Bullet with 6.7 Liter Tu Cummins rbo Diesel

T GONE G ALMOS TERLIN LAST 6 S S IN OUR VEHICLE TORY! INVEN

5 LT9500

Tulsa Freightliner · Western Star 1.888.395.9947 Local: 918.445.5300

5104 West 60th Street / Tulsa, OK 74107

OUT T MISSBLE ' "DONNCREDI ON I ARANCE CLE ING!" PRIC

YOU MAY ALREADY BE AWARE OF THE FACT THAT DAIMLER TRUCKS NORTH AMERICA HAS DECIDED TO DISCONTINUE THE SALE OF STERLING BRANDED HEAVY, MEDIUM AND LIGHT DUTY TRUCKS. AT LEFT ARE ANSWERS TO SOME OF THE QUESTIONS THAT YOU MAY HAVE.

Fort Worth Freightliner · Western Star 1.888.704.0002 Local: 817.626.7090

1804 NE Loop 820 / Fort Worth, TX 76106

Page 5 · July/August 2009 wheels & deals

FORT WORTH

Fort Worth Freightliner · Western Star Pre-Owned Trucks 1804 NE Loop 820 / Fort Worth, TX 76106

(4) 2003 & 2004 FREIGHTLINER CENTURY 70" raised roof, 12.7 liter Series 60 Detroit @ 430 HP, Jakes, 10 speed, 3.58 rears, air ride, fixed fifth wheel, custom interior, 2 aluminum wheels, warranty is available. Really nice affordable trucks with fuel efficient 12.7 liter Detroit. LOW MILEAGES 437K - 671K

1.888.860.8410 Local: 817.626.7090

TH FORT WOROF SPECIAL TH THE MON

2008 FREIGHTLINER FLD 12064 SD

48" flat top, 14.0 liter Detroit @ 490 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, standard interior, 2 aluminum wheels, warranty is available.

Day cab, Jakes, 10 speed, 3:70 rears, air ride, air slide, deluxe interior, aluminum wheels.

(2) 2006 MACK CH613

SUPER CLEAN SD WITH ONLY 36,000 MILES.

(16) 2007 FREIGHTLINER COLUMBIA 70" raised roof, 14 liter Detroit @ 515 HP, Jakes, 10 speed, 3:58 rears, air ride, air slide, deluxe int., 6 alum. wheels, warranty is available. 400 GAL FUEL CAP., LARGE SELECTION OF COLORS, SOME UNLIMITED WARRANTY REMAINING, 4 YEAR 600K TRANSFERABLE ENGINE WARRANTY!

2007 FREIGHTLINER COLUMBIA 12064

A NICE TRUCK WITH ONLY 286,941 MILES ON IT.

Day cab, 12.8 liter MBE 4000 @ 450 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, standard interior, steel wheels, warranty is available. THIS IS

70" mid-roof XT, C-15 Cat 475 HP, Jakes, 13 speed, 3:58 rears, air ride, air slide, deluxe interior, aluminum wheels.

(3) 2006 FREIGHTLINER COLUMBIA

TULSA

Tulsa Freightliner · Western Star Pre-Owned Trucks

5104 West 60th Street / Tulsa, OK 74107

(2) 2005 FREIGHTLINER CENTURY

ATC IS LOOKING FOR QUALIFIED BUYERS!

GREAT T GREAT P

1.888.395.9645 Local: 918.445.5300

FLEET MAINTAINED WITH NEW VIRGIN DRIVE TIRES

70" raised roof, 14.0 liter Detroit @ 515 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, deluxe interior, aluminum wheels, warranty is available. VERY NICE

TULSA OF IAL SPECMONTH THE

2004 FREIGHTLINER COLUMBIA 70" mid-roof XT, MBE 4000 @ 450 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, custom interior, 10 aluminum wheels, warranty is available. $24,300 NEW VIRGIN DRIVE TIRES

2004 FREIGHTLINER COLUMBIA

70" raised roof, 14.0 liter Detroit @ 435 HP, Jakes, 10 speed, 3.70 rears, air ride, air slide, standard interior, aluminum wheels, warranty is available.

FLEET MAINTAINED

2005 FREIGHTLINER COLUMBIA

70" mid-roof XT, 14.0 liter Detroit @ 455 HP, Jakes, 13 speed, 3.42 rears, air ride, air slide, deluxe interior, aluminum wheels, warranty is available.

2006 FREIGHTLINER CENTURY

70" raised roof, 14.0 liter Detroit @ 515 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, custom interior, aluminum wheels, warranty is available.

REMAINING WARRANTY AND NEW VIRGIN DRIVES

2004 FREIGHTLINER CENTURY

70" raised roof, C-15 Cat @ 435 HP, Jakes, 13 speed, 3.55 rears, air ride, air slide, deluxe interior, aluminum wheels, warranty is available. VERY NICE O/O TRUCK

wheels & deals July/August 2009 · Page 6

DALLAS

70" raised roof, 14.0 liter Detroit @ 515 HP, Jakes, 13 speed, 3.58 rears, air ride, air slide, deluxe interior, 6 aluminum wheels, warranty is available.

(3) 2006 FREIGHTLINER CLASSIC XL (2) 2006 FREIGHTLINER COLUMBIA

70" mid-roof XT, 14.0 liter Detroit @ 515 HP, Jakes, 13 speed, 3.58 rears, air ride, air slide, deluxe interior, aluminum wheels, warranty is available.

3040 Irving Blvd. / Dallas, TX 75247

SelecTrucks of Dallas

1.866.838.2462 Local: 214.819.8020

2004 FREIGHTLINER CLASSIC XL

70" raised roof, 14.0 liter Detroit @ 515 HP, Jakes, 13 speed, 3.58 rears, air ride, air slide, deluxe interior, 6 aluminum wheels, warranty is available.

2004 FREIGHTLINER CENTURY

70" raised roof, 12.7 liter Detroit @ 435 HP, Jakes, 13 speed, 3.58 rears, air ride, fixed fifth wheel, custom interior, 6 aluminum wheels, warranty is available.

TRUCKS PRICES!

THE AROUND THE CLOCK FREIGHTLINER GROUP, LLC

(25) 2006 FREIGHTLINER CENTURY

70" raised roof, 14.0 liter Detroit @ 455 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, custom interior, aluminum wheels, warranty is available.

2007 FREIGHTLINER CORONADO

DALLAS SPECIAL OF THE MONTH

70" mid-roof XT, 14.0 liter Detroit @ 515 HP, Jakes, 13 speed, 3.58 rears, air ride, air slide, deluxe interior, aluminum wheels, warranty is available.

70" raised roof, 14.0 liter Detroit @ 515 HP, Jakes, 13 speed, 3.58 rears, air ride, air slide, custom interior, aluminum wheels, warranty is available. Miles under 500K.

(2) 2005 FREIGHTLINER CLASSIC XL

OKC

SelecTrucks of Oklahoma City

1.888.942.8827 Local: 405.942.2159

5101 I-40 West / Oklahoma City, OK 73128

70" raised roof, 14.0 liter Detroit @ 515 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, custom interior, aluminum wheels, warranty is available.

2005 FREIGHTLINER CENTURY 2006 FREIGHTLINER FLD120SD

A AHOM L OF OKL PECIA CITY S MONTH THE

Day cab, MBE 4000 @ 450 HP, Jakes, 10 speed, 3.73 rears, air ride, air slide, custom interior, aluminum wheels, warranty is available. 200 INCH WHEEL BASE

(2) 2005 FREIGHTLINER FLD12064SDT

58" mid-roof, MBE 4000 @ 410 HP, Jakes, 10 speed, 3.58 rears, air ride, air slide, custom interior, aluminum wheels, warranty is available. These trucks only weigh around @ 15,500 lbs. Starting @ $18,950.

(10) 2005 FREIGHTLINER COLUMBIA

Day cab, 12.7 liter Detroit @ 430 HP, Jakes, 10 speed, 3.08 rears, air ride, air slide, standard interior.

2006 FREIGHTLINER COLUMBIA

70" mid-roof XT, 14.0 liter Detroit @ 490 HP, Jakes, 13 speed, 3.42 rears, air ride, air slide, deluxe interior,

WILL MAKE GREAT DUMP TRUCKS OR PULL AN END DUMP

HAS AN APU UNIT, WARRANTY IS AVAILABLE.

Page 7 · July/August 2009 wheels & deals

R YOUR ODAY FO INESS" CALL T TO BUS BACK R LEASE QUOTE " INANCE OIN STOCK AND F TRUCKSY TO DELIVER READ

THE AROUND THE CLOCK FREIGHTLINER GROUP, LLC

· New M2 "Back To Business" Freightliner Class-6 Trucks Eligible · Fantastic Lease Payments and Finance Rates (Subject to Credit Approval) · Up to 60 Days to First Payment ·"Zero Down" Payment Option · Extended Terms to 84 Months for Medium Duty

With interest rates as low as 7.24%*, Daimler Truck Financial's "Back to Business" finance program for Freightliner M2 Business Class® trucks is a great way to take advantage of today's market. Equipped with Mercedes Benz or Cummins engines and a variety of manual /automatic transmission choices, the M2 is ruggedly built, comfortable to operate and easy to maintain. Looking to replace an old fleet of medium duty trucks? Call or come by any ATC Freightliner Group dealership and check out the M2. Great trucks, great deals, great financing!

Oklahoma City Freightliner · Western Star 1.877.262.4700 Local: 405.942.8827

5301 I-40 West Okla. City, OK 73128

*Program is available to creditworthy vocational customers only, as defined by DTF at their sole discretion.

M2

BUSINESS CLASS

3040 Irving Blvd. Dallas, TX 75247

®

Tulsa Freightliner · Western Star 1.888.395.9947 Local: 918.445.5300

5104 West 60th Street Tulsa, OK 74107

Dallas Freightliner · Western Star 1.800.580.2620 Local: 972.225.4300

4200 Port Boulevard Dallas, TX 75241

Dallas Freightliner · Western Star 1.888.840.5113 Local: 214.579.6445

Fort Worth Freightliner · Western Star 1.888.704.0002 Local: 817.626.7090

1804 NE Loop 820 Fort Worth, TX 76106

wheels & deals July/August 2009 · Page 8

SPRINTER

TM

Available in three roof heights (with up to 7 feet of interior height), three lengths, and as much as 600 cubic feet of cargo space, this vehicle sets the standard for easy access and storage capacity. Equipped with either a 3.0L CDI V6 turbo diesel or 3.5L V6 gas engine, and a 5-speed automatic transmission, Sprinter is is fuel efficient, priced right and a breeze to maintain. Great work vehicle for tradesmen and service technicians. Come in and test drive one today.

Organize your workspace and save your aching back with a Freightliner Sprinter.

Affordably priced, economical to operate and easy to maintain

IOR FEET INTER ER UP TO 7 / PASSENG HEIGHT LSO AVAILABLE MODELS A

GRE LIMITEAT DEALS ON LAST YED NUMBER OF A AVAILAB R'S MODELS LE. HURR Y!

Oklahoma City Freightliner · Western Star 1.877.262.4700 Local: 405.942.8827

5301 I-40 West Okla. City, OK 73128

Dallas Freightliner · Western Star 1.800.580.2620 Local: 972.225.4300

4200 Port Boulevard Dallas, TX 75241

Fort Worth Freightliner · Western Star 1.888.704.0002 Local: 817.626.7090

1804 NE Loop 820 Fort Worth, TX 76106

Tulsa Freightliner · Western Star 1.888.395.9947 Local: 918.445.5300

5104 West 60th Street Tulsa, OK 74107

3040 Irving Blvd. Dallas, TX 75247

Dallas Freightliner · Western Star 1.888.840.5113 Local: 214.579.6445

THE AROUND THE CLOCK FREIGHTLINER GROUP, LLC

Page 9 · July/August 2009 wheels & deals

wheels & deals tech talk

By Jerry Bisbee ­ ATC Tech Trainer

[email protected]

Cascadia HVAC Operation ­ Part Two

Last month's Tech Talk article provided information about how the HVAC system in the Cascadia model Freightliner is controlled. Please refer to that article. Much of the input information that the Front Control Unit (FCU) and the Auxiliary Control Unit (ACU) need to do their jobs comes to them over the J-1939 datalink. Some of this input information comes from the engine's control unit, and some comes from the SAM Cabin. Much of this information is required by the FCU before if will engage the AC compressor clutch. Technicians who diagnose AC clutch engagement issues must know where these inputs come from and how to determine whether the FCU is receiving the necessary input information.

If the blower motor has entered protection mode, the blower speed feedback signal becomes a diagnostic signal to the FCU and ACU by setting its frequency to 10 Hz and varying the duty cycle of the signal to indicate the cause of the protection mode. Table 2 illustrates the various duty cycles of the diagnostic signal and the fault conditions they represent. The frequency and duty cycle of this signal may be measured with a digital multimeter that has the capability to measure frequency and duty cycle. Table 3 illustrates the fault codes that may be logged in the FCU or ACU when the blower motor enters one of the protection modes.

FCU Calibration

Fault Code Diagnostics

Both the FCU and the ACU broadcast fault codes on the J-1939 datalink. Some of these fault codes are triggered when the FCU does not receive the information it needs from the J-1939 datalink. These fault codes will display on the message center on the dash when they are "active", but the only way to read them as "inactive" or "stored" codes is by using the ServiceLink diagnostic software that is available to Freightliner dealerships. Refer to the Operator's Manual in the vehicle for instructions on how to read fault codes on the dash message display. Table 1 lists fault codes that are stored when the FCU doesn't receive necessary information from the J-1939 datalink. This is not a complete list of all the fault codes that the FCU and ACU broadcast, but these are the codes that are related to the FCU and ACU failing to receive information that they need from the J-1939 datalink. If one of these codes is active the FCU will not engage the AC compressor clutch.

If the FCU is replaced or any of the door actuators on the front HVAC unit are removed or replaced the FCU must be manually calibrated. To perform the calibration routine: 1. Turn the ignition ON but do not start the engine. 2. Set the blower speed control to full left or "OFF". 3. Set the temperature control to full right or "HOT". 4. Set the mode control knob to full left or "FACE". 5. Press the A/C and RECIRC buttons simultaneously until the A/C and RECIRC indicators begin flashing simultaneously. 6. The calibration process will begin and continue until the A/C and RECIRC indicators stop flashing. Future Tech Talk articles on the Cascadia HVAC system will cover performance testing and refrigerant system pressure diagnostics.

Table 1 - HVAC Fault Codes Table

J-1939 FCU Fault Codes: FCU [J-1939 Source Address (SA) 25]

SA 25 25 25 25 25 25 25 25 25 25 25 SPN 70 84 110 158 168 171 190 629 639 522510 523307 FMI Fault Description 9 Parking Brake Switch Status Messageabnormal update rate 9 9 3 4 9 9 9 12 2 9 9 3 4 12 2 Vehicle Speed-abnormal update rate Engine Coolant Temperature messageabnormal update rate FCU-Voltage Above Normal FCU-Voltage Below Normal SAM Cab Battery Voltage Messageabnormal update rate Ambient Air Temperature-abnormal update rate Engine Speed Message-abnormal update rate FCU-bad intelligent device or component J-1939 Datalink-incorrect or intermittent data High Pressure Sensor-abnormal update rate Low Air Pressure Switch Status Messageabnormal update rate ACU-voltage above normal ACU-voltage below normal ACU-bad intelligent device or component J-1939 Datalink-incorrect or intermittent data Fault Trigger FCU does not receive J-1939 parking brake switch status from SAM Cab. FCU does not receive J-1939 vehicle speed message from engine ECM / CPC. FCU does not receive J-1939 engine coolant temperature message from engine ECM / CPC. FCU Voltage is too high or voltage is applied when it should not be. FCU Voltage is too low. FCU does not receive J-1939 battery voltage message from SAM Cab. FCU does not receive ambient air temperature message from SAM Cab. FCU does not receive J-1939 engine speed message from Engine ECM / CPC Internal FCU failure FCU attempts to broadcast this fault if all J-1939 received messages are corrupt continuously for a period of 1.5 seconds. FCU does not receive high pressure sensor information from SAM Cab. FCU does not receive J-1939 low air pressure switch status message from SAM Cab ACU voltage is too high. ACU voltage is too low. Internal ACU Failure ACU attempts to broadcast this fault if all J-1939 received messages are corrupt continuously for a period of 1.5 seconds

Blower Motor Diagnostics

The Cascadia uses a brushless direct current (BLDC) blower motor in both the front and rear HVAC units. Both have four circuits connected to them. Pin locations in the 6-pin blower motor connectors are as follows: Pin 1 ­ Feedback / Diagnostic Signal ­ connected to FCU or ACU Pin 2 ­ Not Used Pin 3 ­ Ground ­ connected back to the SAM Cab Pin 4 ­ 12V Battery ­ powered by the SAM Cab Pin 5 ­ PWM Command ­ connected to FCU or ACU Pin 6 ­ Not Used Blower speed is controlled by Pulse Width Modulated (PWM) signal from the FCU or ACU. Each controller sends a 2000 Hz pulse width signal to its respective blower motor at Pin 5 of the blower motor connector. The pulse width of the signal varies with the fan speed switch speed selection. The blower motor operates between 400 and 3850 rpm. Under normal operation, the feedback signal to the FCU and ACU, at Pin 1 of the blower motor connector, indicates blower motor speed by varying the frequency, rpm = 20 X Frequency. The blower motor has a protection mode built into it that will cause it to operate at a reduced speed or shutdown to prevent damage. Any of the following conditions will cause the blower motor to enter "protection mode". Over/Under Voltage ­ if the voltage supply to the blower motor is less than 8.5V or more than 17V, the blower motor will enter protection mode and shut down. The blower feedback circuit will indicate a fault and a fault will be logged in the FCU or ACU. Reverse Voltage Protection ­ the motor will not operate if the polarity of the power and ground wires is reversed. Current Protection ­ if the motor exceeds the maximum current, the speed will be reduced until the current is within the normal range (under 23.5A). The blower feedback circuit will indicate a fault, and a fault code will be logged in the FCU or ACU. Temperature Protection ­ if the blower's internal temperature sensor indicates that the temperature inside the motor is too high, the blower speed will be reduced to 1000rpm to reduce the load on the motor. A second comparison is made between the temperature and the maximum limit. If the temperature is still too high the blower speed is further reduced to 500 rpm and another comparison is made between the temperature and the maximum limit. If the temperature is still too high the motor will shut down until it has cooled. The blower feedback circuit will indicate a fault and a fault code will be logged in the FCU or ACU.

Visit the Freightliner booth #11117 at this years Great American Trucking Show, August 20-22, in Dallas, Texas. As part of the show we will have special guests Kurt Grote, Henry Albert, and Dick McCorkle with us in the booth. These drivers are currently testing the new Freightliner Cascadia and are "blogging" about their travels at http://www.SliceofTruckerLife.com.

J-1939 ACU Fault Codes: ACU [J-1939 Source Address (SA) 58

58 58 58 158 609 639

Table 2 - Blower Motor Protection Mode Table (as indicated on feedback / diagnostic circuit)

Protection Mode Voltage too low Voltage too high Locked rotor Overcurrent or thermal protection Frequency 10hz 10hz 10hz 10hz Duty Cycle 50% 50% 75% 25% Notes If the blower is in protection mode, it communicates via the feedback-diagnostic circuit to the FCU or ACU. The duty cycle will correspond to the protection mode entered.

Table 3 - J-1939 Fault Codes from FCU (SA-25) and ACU (SA-58) for Blower Protection Modes

SA 25 FMI Fault Description 2 Blower protection mode-voltage out of range (front unit) 523318 6 Blower protection mode-overcurrent or thermal protection (front unit) 7 Blower protection-speed mismatch or blocked rotor (front unit) 2 Blower protection mode-voltage out of range (rear unit) 523318 6 Blower protection mode-overcurrent or thermal protection (rear unit) 7 Blower protection-speed mismatch or blocked rotor (rear unit) SPN Fault Trigger Voltage supply to motor is below 8.5V or higher than 17V. Current to motor is above 23.5A or motor is overheated internally. Speed signal from motor indicates the speed is not matching requested speed. Voltage supply to motor is below 8.5V or higher than 17V. Current to motor is above 23.5A or motor is overheated internally. Speed signal from motor indicates the speed is not matching requested speed.

58

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Paul Burk General Manager - Fort Worth Don Freeman General Manager - Tulsa Jim King General Manager - Service Bob Acker General Manager - Dallas Doug Phillips Manager/Used Trucks - Dallas Robert Thompson General Manager - Parts Steven Silcox Corporate Marketing Manager Shannon Evans Managing Editor Paul Evans EvansDesign, Inc.

wheels & deals July/August 2009 · Page 10

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