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NHTSA ID Number: 10163004
Manufacturer Communication Number: 2019-SE-AC-TechT
Summary
Subaru Service and Technical Support Line Newsletter. (Special Edition Section 609 TECH Training and Cert)
1 Affected Product
Vehicle
MAKE | MODEL | YEAR |
SUBARU | SUBARU | 9999 |
CODE ARTICLE………………………….PAGE
(10) Section 609 Technician Training and
Certification…………………………. 1
(10) Is That Normal? A/C Performance
Testing……………………………….. 2
(10) What’s Next? Where To Start
Diagnosis When The A/C Is
Underperforming ……………………. 3
(10) Air Conditioning Leak Diagnosis…… 4
(10) PHEV A/C Precautions………………. 4
(10) A/C System Oil Requirements……… 5
(10) Forester Sync Operation……………. 5
SEOCONTENT-START
Subaru Service and Technical Support Line Newsletter
The Subaru TechTIPS newsletter is intended for use by professional Technicians ONLY. Articles
are written to inform those Technicians of conditions that may occur in some vehicles, or to
provide information that could assist in the proper servicing of the vehicle. Properly trained
Technicians have the equipment, tools, safety instructions, and know-how to do the job correctly
and safely. If a condition is described, DO NOT assume that your vehicle has or will have that
condition. Impreza, Legacy, Justy, Loyale, Outback, Forester, Subaru SVX, WRX, WRX STI,
Baja, Tribeca, BRZ, XV Crosstrek and “Quality Driven” are Registered Trademarks.
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is
friendly to our environment and in accordance
with all local, state and federal laws and
regulations.
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS
COULD RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
SUBARU OF AMERICA, INC. IS
ISO 14001 COMPLIANT
10 SECTION 609 TECHNICIAN TRAINING AND CERTIFICATION
Spring is in the air which means Air Conditioning season is
upon us again. Will you be ready to perform A/C system repairs
both technically and with the proper A/C Refrigerant Recovery &
Recycling certification? If not, you may be in violation of Section
609 of the Clean Air Act which requires that auto Technicians
who perform A/C repairs and operate refrigerant handling
equipment be EPA certified. The information below is directly
from the United States Environmental Protection Agency website.
“Any person who repairs or services a motor vehicle air
conditioning (MVAC) system for consideration (payment or
bartering) must be properly trained and certified under section
609 of the Clean Air Act by an EPA-approved program. All Technicians servicing MVAC-like
appliances must be certified.
EPA-approved Technician training and certification (TT&C) programs provide education on the
proper use of MVAC servicing equipment, the applicable regulatory requirements,
the importance of refrigerant recovery, as well as the effects of improper handling
of refrigerants on the ozone layer and climate. To be certified, Technicians must
be trained by an EPA-approved program and pass a test demonstrating their
knowledge in these areas.”
ASE provides convenient online certification that can link to your SKILS profile
at https://www.asecampus.com. At the time of publishing the cost is $19.
©2019 Subaru of America, Inc. All rights reserved.
CONTINUED ON THE NEXT PAGE
home
ARTICLES CONTAINED
IN THIS ISSUE
CODE ARTICLE………………………….PAGE
(10) Section 609 Technician Training and
Certification…………………………. 1
(10) Is That Normal? A/C Performance
Testing……………………………….. 2
(10) What’s Next? Where To Start
Diagnosis When The A/C Is
Underperforming ……………………. 3
(10) Air Conditioning Leak Diagnosis…… 4
(10) PHEV A/C Precautions………………. 4
(10) A/C System Oil Requirements……… 5
(10) Forester Sync Operation……………. 5
Click on a title below to jump to the article.
Click the date located in the footer to return to page 1.
SPECIAL EDITION
Special Edition TechTIPS Page 1 of 5
10 IS THAT NORMAL? A/C PERFORMANCE TESTING
As the weather gets warmer, Technicians are inevitably presented with concerns of poor A/C
performance. The first step in any diagnosis is confirming the concern, then determining if it is
abnormal for the vehicle in question. It’s easy to think all Subaru A/C systems should perform
the same, but that simply isn’t true. Subaru vehicles feature different compressor types, varying
evaporator and condenser sizes, and different A/C management systems to name a few.
Considering these variables, referencing the Service Manual is the best way for a Technician to
evaluate A/C performance. The example below shows the expected performance for 2018 Impreza
A/C on both manual and automatic systems.
The above charts clearly show an expected temperature and pressure difference between the
manual and automatic system. Performance testing procedures are found in the Service Manual for
each model in Heater & Air Conditioner / Ventilator > Air Conditioner > Refrigerant
Pressure with Manifold Gauge Set > Procedure.
When a vehicle has concern of poor A/C performance and is found to be performing to specification, a
QMR should be submitted so we can better understand customer expectations.
CONTINUED ON THE NEXT PAGE
Special Edition TechTIPS Page 2 of 5
10 WHAT’S NEXT? WHERE TO START DIAGNOSIS WHEN THE A/C IS UNDERPERFORMING
After confirming the A/C is underperforming, the Technician should perform a thorough visual
inspection. Often, a failure is found during the visual inspection. When performing a visual inspection,
check all lines, hoses, connections, crimps, condenser, etc. for obvious signs of leaks. Oil or dirt build
up at a connection that is otherwise clean may be an indication of a leak. Visually inspect all harness
connections to ensure they are fully engaged and inspect the related harnesses themselves for
damage. Verify the drive belt is in good condition and has proper tension.
With the engine running and A/C on, take inventory of system operation. Are the radiator fans on and
pulling air in the correct direction? Is the compressor clutch (if fitted) cycling at normal intervals? Does
the compressor suction line get cooler and the discharge line get hotter? If the system appears to be
operating, is there any change in duct outlet temp?
Check for diagnostic trouble codes or perform a diagnosis self-test. Modern climate control systems
provide DTC and PID data, accessed using SSM. For models where SSM communication is not
supported, the Service Manual provides self-diagnosis procedures found in HVAC SYSTEM (AUTO
A/C) (DIAGNOSTICS) > Diagnostic Chart for Self-Diagnosis. When PID data is available,
Technicians should compare the PID data to actual measurements whenever possible. For example:
Does the ambient temp sensor read properly? Do the A/C pressure sensor readings match manifold
gauges? Does anything look abnormal as compared to the Service Manual?
NOTE: DTC B14A1 (Sun Load sensor) will almost always be present when checking for
DTCs indoors. The Service Manual contains reference readings and ranges found in AIR
CONDITIONER(DIAGNOSTICS) > Data Monitor. When setting the desired temperature to
the highest or lowest SSM may display a temperature request that seem invalid but is not.
The image below shows normal ranges a Technician will see using SSM when the desired
temperature is set to HI or LO on 2019 MY Ascent.
Blower outlet request
temperature (Driver’s)
Display the inner set
value of the A/C control
panel.
−327.68 — 327.67°C
Blower outlet request
temperature
(Passenger’s)
Display the inner set
value of the A/C control
panel.
−327.68 — 327.67°C
Air conditioning systems do not always set diagnostic trouble codes. Without DTCs, it may be
necessary to use the Diagnostics with Phenomenon section of the Service Manual to accurately
diagnose a customer’s concern. This can be found on STIS, DIAGNOSTICS > HVAC SYSTEM
(DIAGNOSTICS) > Diagnostics with Phenomenon. This section can also be found in several
other vehicle system sections including EyeSight, Body Control, Power Seat Memory, etc.
When diagnostics are difficult and Techline assistance is required, a set of Techline Pre-Call
Worksheets for HVAC, Electrical, Transmission, etc. are provided on Subarunet > Service
Operations & Technical > Techline Pre-call Worksheets and should be completed before
calling.
CONTINUED ON THE NEXT PAGE
Special Edition TechTIPS Page 3 of 5
10 AIR CONDITIONING LEAK DIAGNOSIS
With today’s modern refrigerants, we would also like to remind all Technicians
the use of dyes in Subaru air conditioning systems is strictly forbidden. The
proper use of a recently calibrated refrigerant sniffing / leak detection tool is the
most effective method for finding leaks.
The following is from Subaru Policies & Procedures section 8.4.5 Air
Conditioning: “The use of dye to diagnose an air conditioning refrigerant leak is
not an approved Subaru of America diagnostic procedure.”
All retailers are required to have leak detectors for R134a/R12 meeting SAE
J1771 standards. Also, a HO-1234YF leak detector is required, Robinair model
22791 is recommended.
When using a leak detector, airflow in the testing area should be minimized. The
sampling end of the tester should be moved along all sides of component being inspected. When
looking for a high side leak, the A/C should be on as the higher pressure may make the leak easier to
detect. However, when looking for a low side leak, the A/C should be off since low side A/C pressures
are higher with the system static.
10 PHEV A/C PRECAUTIONS
The HVAC system used on the 2019 Crosstrek Hybrid is completely
re-designed and unlike any system Subaru used on previous vehicles.
This system uses a high voltage A/C compressor in place of a mechanical
A/C compressor. This system uses R-134a refrigerant. A unique
refrigerant oil (ND-Oil11) is used in this system. It is an electrically nonconductive
oil equivalent to POE oil. For this reason, a dedicated A/C
recovery machine must be used to avoid refrigerant oil contamination.
If the oil is contaminated with an electrically conductive oil, the hybrid
system may set a loss of electrical isolation code causing it to shut
down. Additional information can be found in 2019 Crosstrek Hybrid New
Technology Training Technician Reference Booklet.
Retailers, especially multi-brand retailers, may have equipment designed
to self-flush its internal components and hoses to prevent oil
contamination. This flush process can take thirty minutes or longer.
Always follow the equipment manufacturers guidelines when performing the self-flush procedure.
When oil needs to be added, a manual oil injector (pictured at left)
should be used. Remember, only use the specified ND-Oil 11 in the
2019 Crosstrek Hybrid. Never use an automatic oil injector included
on some A/C machines.
CONTINUED ON THE NEXT PAGE
Special Edition TechTIPS Page 4 of 5
10 A/C SYSTEM OIL REQUIREMENTS
Air conditioning compressors require lubrication to their moving parts just like an engine. The use of
the correct oil type and viscosity is very important. Always refer to the Service Manual for the correct
oil type and viscosity. Any oil not available through normal parts channels should be locally sourced.
When replacing the compressor, evaporator, or condenser, some oil will be trapped in the original
component. Oil will need to be added to the system when replacing these components. The industry
standard for oil to add to the replacement component depends on which component is being replaced.
Modern condensers require two ounces, evaporators require two to three ounces, hoses and lines
need only one or two ounces of oil. When replacing the compressor, drain the old oil out of the original
compressor and add the same amount to the replacement compressor.
Before removing a component other than the compressor, the following procedure should be followed:
1) Increase the engine to 1,500 rpm.
2) Turn the A/C switch to ON.
3) Turn the temperature control dial to MAX COOL position.
4) Turn the FRESH/RECIRC switch to RECIRC position.
5) Turn the fan speed control dial or switch to HI (MAX) position.
6) Leave the system in this condition for 10 minutes.
This will return MOST of the oil back to the compressor.
During evacuation, oil may be recovered with the refrigerant. Always check the oil collection bottle
before and after system evacuation to ensure no oil is lost. Be sure to add the amount of oil evacuated
plus the additional oil recommended for the replacement component.
When the air conditioning system has been exposed to the atmosphere for an extended period, the
remaining oil in the system will absorb water. The oil and water cannot be separated; the system will
require flushing of the refrigerant and oil.
10 FORESTER SYNC OPERATION
The Passenger Link system introduced in the 2019
Forester allows the detection of people occupying
the passenger front seat and rear seats. The HVAC
control module detects occupants using the passenger
Occupant Detection System and the rear door switch
operation history. The system automatically switches
OFF passenger side settings (set temperature) and engages the SYNC setting when there is no
passenger detected in the passenger front seat. The system requires no driver input to change
passenger settings improving convenience for the driver efficiency.
Special Edition TechTIPS Page 5 of 5
TIPS_SE_June19
2019 June TechTIPS Air Condition Season Special Edition Newsletter
https://www.nhtsa.gov/recalls?nhtsaId=10163004
https://static.nhtsa.gov/odi/tsbs/2019/MC-10163004-9999.pdf
“This site contains affiliate links for which OEMDTC may be compensated” |
- UNABLE TO SHIP THIS ITEM TO CALIFORNIA and WASHINGTON
- All in one solution to restore lost refrigerant and oil in automotive air conditioning systems
- Contains system safe leak sealer additive that seals common A/C leaks in rubber hoses, gaskets and O-rings
- Built in disposable recharge hose
- No tools required
- WORKS WITH ALL 134a SYSTEMS: Our 134a Replacement Refrigerant is compatible with all systems and lubricants that are designed to be used with 134a refrigerant or that have been retrofitted to use 134a. It can be used in cars, trucks, refrigerators, RVs, boats, tractors, combines, ice machines, milk processing equipment, and any other equipment calling for R-134a. You must follow all EPA guidelines when handling this refrigerant.
- COLDER FORMULA WITH LOWER HEAD PRESSURES: Our refrigerant is a specially engineered hydrocarbon formula that operates at a lower head (high side) pressure than standard 134a. This can allow your compressor to run smoother and have improved cooling and performance properties. This is our coldest and highest performing refrigerant formula. When charging, our 134a Replacement Refrigerant is easily installed using the same pressure parameters as standard 134a.
- USES LESS REFRIGERANT BY WEIGHT: Our 134a Replacement Refrigerant is physically lighter than standard 134a refrigerant. Each 8oz can of 134a Replacement Refrigerant is equal to 21oz of standard 134a refrigerant (a 1:2.6 weight ratio). That means that if you want to add 12oz of standard 134a refrigerant to a system, you will only need to add 4.6oz of our 134a Replacement Refrigerant. This translates to using up to 60% less refrigerant for a proper charge.
- PROVEN FORMULA THAT IS ENVIRONMENTALLY SAFE: The Leak Saver 134a Replacement Refrigerant formula is 100% USA Made. It is designed to be a climate-friendly green alternative to standard 134a and is non-ozone depleting and has zero Global Warming Potential (GWP). On the other hand, standard R-134a is an HFC (hydrofluorocarbon) greenhouse gas and has a high (GWP). Please note that this refrigerant is flammable and has been safely sold for all the listed applications for over 28 years.
- YOUR SATISFACTION IS OUR PRIORITY: We stand 100% behind the effectiveness of our products. If for any reason you are not satisfied with your product, please contact us, and we will make it right.
- UNIVERSAL - ZeroR AC Refrigerant is a hydrocarbon that safely bonds with chemicals like R134a, R1234YF and R12. We can only advertise this product to be used in R134a systems due to EPA regulations in the USA on both R12 and R1234YF systems. EPA also prohibits mixing refrigerant types. See the description for all legal disclaimers.
- EASY - This product installs just as easily as any R134a products. Cans even have R134a threads and the majority of R134a can taps will work for these cans.
- 6oz CANS - Refrigerants are compressed gasses and are measured by weight, not by liquid volume such as water. All gasses compress differently and produce a different weight. ZeroR AC Refrigerant is low weight compared to R134a, but its performance is equal to 16oz of R134a.
- ECO FRIENDLY – ZeroR AC Refrigerant is a 100% Natural gas unlike R134a, R1234yf and R12.
- SAFE – ZeroR AC Refrigerant has a class 2.1 flammability rating just like the new R1234YF which is now used in 100% of newly manufactured vehicles. Under normal operating conditions this product presents no danger to its users when handled properly and used in systems approved for flammable refrigerants.
- UNABLE TO SHIP THIS ITEM TO CALIFORNIA and WASHINGTON
- Replaces lost R-134a refrigerant and oil in automotive A/C system
- Eliminates moisture buildup and acid from A/C system to help extend A/C system life
- Contains acceptable amounts of ingredients: 14oz R-134a Refrigerant (1,1,1,2 Tetrafluoroethane, CAS# 811-97-2) & 8oz of synthetic lubricant enhancer, conditioner, with leak sealer.
- Contains R-134a gas which is acceptable for use in motor vehicle A/C (MVAC) systems
- Replaces lost R-134a refrigerant and oil in automotive A/C system
- Extra long 24 inch recharge hose for accessing hard to reach service ports
- Reusable trigger dispenser with built in low pressure gauge and temperature dial indicator
- Contains R-134a gas which is acceptable for use in motor vehicle A/C (MVAC) systems
- Complies with Section 612 of the EPA Clean Air Act. EPA Compliant in Self Sealing Cans
- Replaces lost R-134a refrigerant and oil in automotive A/C system
- System safe stop leak sealer stops most common A/C leaks with hoses, gaskets and O-Rings
- Special anti-wear additives extend system life and improve performance
- Contains R-134a gas which is acceptable for use in motor vehicle A/C (MVAC) systems
- Complies with Section 612 of the EPA Clean Air Act, EPA Compliant in Self Sealing Cans
- USA Made - All R134a is brand new and made in the USA to the highest purity standards. This can be used to recharge 100% of R134a air conditioning systems.
- NEW GAS - SuperTech gas is brand new and never reclaimed or recycled. We purchase our R134a multiple times per year ensuring you get fresh made refrigerant. Old refrigerants can begin to rust and can cause performance issues if used.
- SSV CANS - Our cans are equipped with the 50 State compliant self-sealing valve design. You can store partially used R134a cans. Note, older can taps may not work on this valve type and you may need to purchase a R134a can tap to work with all SSV cans
- Complies with Section 612 of the EPA Clean Air Act
- Returns: This item is considered a HazMat Material and as such is not returnable. It requires hazmat certification to ship. Amazon does not supply a Return label and the seller will not supply return labels for this type of products.
Last update on 2024-04-03 / Affiliate links / Images from Amazon Product Advertising API
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