2018 fca r-1234yf a/c update - macsw.org · u ti & lilliiquqquuidiidd liniinne a/c...

2018 FCAR-1234yf A/C Update

Alan [email protected]

2018 Dodge Demon

2018 Dodge Demon

• 840 horsepower / 770 lbs/ft of torque• Supercharged 6.2L HEMI® Demon V-8• Dodge Challenger SRT Demon - the most-powerful

muscle car ever• Highest HP V-8 production car engine ever• 1st ever front-wheel lift in production car (2.92 ft.)• World’s fastest quarter-mile production car with an ET of

9.65 seconds at 140 MPH• World’s fastest 0-60 production car: 2.3 seconds

2018 Dodge Demon

All New 2018 Jeep Wrangler (JL)

• 3.6L Pentastar V6• New 2.0L Turbo – Direct Injection 4 cylinder• 850RE 8 Speed Automatic• D478 6 Speed M/T

All New 2019 Ram 1500 (DT)

Chrysler Pacifica (RU)HVAC options • Manual temperature control system

• Three-zone Manual Control• Automatic temperature control system

• Three-zone Auto Temp • The system can be controlled by dedicated

controls on the Integrated Center Stack, touch screen selections on the Uconnect screen, or by voice commands

• Three-zone systems also have manual or automatic controls for the rear passengers. The controls are located in the headliner above the right sliding door.

Chrysler Pacifica (RU)

Chrysler Pacifica – need new pic

Chrysler Pacifica

HVAC options • The front HVAC Control

Module is located on the right side of the front plenum assembly

Chrysler Pacifica

Chrysler CCCCCCCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhhrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyyssssssssssssssssssssssssssllllllllllleeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhhhhhhhhhhhrrrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyysssssssssssssssssssssssssssssssllllllllllllllleeeeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrr Pacifica Rear HVACrrrrrrrrrr rrrrrrrrrrrrrrrrrrrrrrrrr Paaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccciiiiiiiiiiiiiffffffffffffffiiiiiiiiiiiiiicccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaa RRRRRRRRRRRRRRRRRRRReeeeeeeeeeeeeeeeeeeeeeeeeaaaaaaaaaaaaaaaaaaaaaaaaaaaaarrrrrrrrrrrrrr HHHHHHHHHHHHHHHHHVVVVVVVVVVVVVAAAAAAAAAAAAAAAAAAAAACCCCCCCCCCCCCCCCCCCCCCCPPPPPPPPPPPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaacccccccccccccccccccccccccccciiiiiiiiiiiiiiiiiiiifffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiicccccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaa RRRRRRRRRRRRRRRRRRRRRRRRRRReeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaarrrrrrrrrrrrrrrrrrrrrrrrrr HHHHHHHHHHHHHHHHHHHHHHHHHVVVVVVVVVVVVVVVVVVVVVAAAAAAAAAAAAAAAAAAAAAAAACCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Rear HVAC UnitReReReReReReRearararararararar HHHHHHHHVAVAVAVAVACCCCCCCC UnUnUnUnUUU itititittit

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For 3 zone systems, Rear HVAC Control Module is located near the bottom of the rear plenum assembly near the right wheel well

Chrysler Pacifica

Cabin air filter is located behind the glove box

Front Heater CoreFFFFFFFFFrrrrrrrrroooooooonnnnnnnnttttttttt HHHHHHHHHeeeeeeeeaaaaaaaaatttttttteeeeeeeerrrrrrrr CCCCCCCCCoooooooorrrrrrrrreeeeeeee

Chrysler CCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyssssssssssssssssssssssslllllllllleeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhhhhhhrrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyyyssssssssssssssssssssssssssssssllllllllllllllleeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrr Pacifica Front HVACrrrrrrrrrrr rrrrrrrrrrrrrrrrrrrrrrrrrrr Paaaaaaaaaaaaaaaaaaaacccccccccccccccccccccciiiiiiiiiiiiffffffffffffiiiiiiiiiiiiiicccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaa FFFFFFFFFFFrrrrrrrrrroooooooooooooooooooooooonnnnnnnnnnnnnnttttttttttttttttttttt HHHHHHHHHHHHHHHVVVVVVVVVVVVVAAAAAAAAAAAAAACCCCCCCCCCCCCCCCCCCCCPPPPPPPPPPPPPPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaacccccccccccccccccccccccccccciiiiiiiiiiiiiiiiiiiiiffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa FFFFFFFFFFFFFFFFFFFFFFrrrrrrrrrrrrrrrrrrrrrrrrrooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnttttttttttttttttttttttt HHHHHHHHHHHHHHHHHHHHHHHHHVVVVVVVVVVVVVVVVVVVVVVVVVAAAAAAAAAAAAAAAAAAAAAAAAAAAAACCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Mode Actuator

Left Temp Actuator

Duct Sensor –Left Floor

Dual Zone ATC HVAC unit –Driver / Left view

Duct Sensor –Left Panel

Chrysler yyyyyyyyyyyyyyyyyyCCCCCCCCCCCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhhhhhhhhhhhrrrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyyysssssssssssssssssssssssssssssssssslllllllllllllleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrrrr Pacifica Front HVACrrrrrrrrrrrrrrrrrrrrrrrrr PPPPPPPPPPPPPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccccccciiiiiiiiiiiiiiiiiiiifffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiiccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa FFFFFFFFFFFFFFFFFFFFFFrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnttttttttttttttttttttttttttt HHHHHHHHHHHHHHHHHHHHHHHHHVVVVVVVVVVVVVVVVVVVVVVVAAAAAAAAAAAAAAAAAAAAAAAAAACCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Right Temp Actuator

Blower Motor with Integrated Controller

Duct Sensor –Right Floor

Dual Zone ATC HVAC unit -passenger/right view

Duct Sensor –Right Panel

Evap Temp Sensor

19-way Inline Connector

Cabin Filter Door

Drain Tube

Chrysler CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhhhhhhhhhhhrrrrrrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyssssssssssssssssssssssssssssssssslllllllllllllleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrrr Pacifica (Gas) rrrrrrrrrrrrrrrrrrrrrrrr PPPPPPPPPPPPPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccccccciiiiiiiiiiiiiiiiiiiiiiffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiicccccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaa (((((((((((((((((((((((((GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasssssssssssssssssssssssssssssssss)))))))))))))))))))))))))))) PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Suction & SuSuSuSSSSSuSuSSuSuSSSSSSSuSSSS ctctctctctcccccctctctccccctctc ioioioioioioioiooooooooonnnnnnnnnnnnnn &&&&&&&&&&&&&&&&&Liquid LineSuSuSuSuSuSuSuuSuSuSuSSuSSuSuSuctcttctcctctctctctcctcttctctctcttc ioioioioioiooooiooiioiiooonnnnnnnnnnnnnn & &&&&&&&&&&&&&&&&&&&&LiLiLiLiLiLiLiiiLiLLiququququququququqquququququuquququuqquididididdddidididdididddiddd LLLLLLLLLLLinininininininnininininnneeeeeeeeeeeeeeeeeeeeeeLiLiLiLLiiiiiiquququqqqqqqqqqqqq ididididididiididddddd LLLLinininininininnnnnnnnnneeeeeeeeeeeeee

A/C CompressorA/A/A/A/A/A/A/A/A/AAAAAAAA//CCCCCCCCCCCCCCCCCCCCCC CoCoCoCoCoCoCoCoCoCoCoCoCCoCoCoCCoCoCoCoCCoCompmpmpmpmpmpmpmpmpmpmpmmpmpmpppmpppppppprererererereerereerererererereeeeeereeessssssssssssssssssssssssssssssssssssssssssssssssorororororoorrorooororrorroorooooro

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Chrysler CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCChhhhhhhhhhhhhhhhhhhhhhhhhrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyyysssssssssssssssssssssssssssssssssslllllllllllllleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrr Pacifica (Gas)rrrrrrrrrrrrrrrrrrrrr PPPPPPPPPPPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccccccciiiiiiiiiiiiiiiiiiiiiifffffffffffffffffffffffffffiiiiiiiiiiiiiiiiiiiiiiiccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ((((((((((((((((((((((((GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasssssssssssssssssssssssssssssssss))))))))))))))))))))))))PPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Quick Connect Joint QuQuQuQuQuQQQQQuQQQQQuQQQQQ iciciciciciciciciiccccccckkkkkkkkkkkkkk CoCoCoCoCCoCCCoCoCoCCCoCoCoCoCoCCCooonnnnnnnnnnnnnnnnnnnnnnnnececececececeeccecececcecececece tttttttttt JoJoJoJoJoJoJooooJooJoooJoJ ininininininiininiinnnnnttttttttttbetween Underhood QuQuQuQuQuQuQuQuQuQuQuQuQuQQuQuuuQQQQ iciciciccccicciciciciccck kkkkkkkkkkkk CoCoCoCoCooCoCoCCoCoCoCoCoCoCoCooonnnnnnnnnnnnnnnnnnnececececececececececececececceeectt tttttttttt JoJooJoJoJoJoJoJoJoJoJoJJoJoJoooinininininniininnnt tttttttttttbebebebebebbebebeeeeetwtwtwtwtwwtwwweeeeeeeeeeeeeeeeeeeeeeeennnnnnnn UnUnUnUUnUnUnUnU dedededededededeeederhrhrhrhrhrhhrhooooooooooooooooooooooooooooooooddd ddddddddddddbebebebebebebebebebeeb twtwtwtwtwwtttttweeeeeeeeeeeeeeeeeeeeeennnnnnnnnnnnn UnUnUnUnUnnnnnndedededededdeddededdeerhrhrhrhrhrhrhrhhrhrhrhhrr ooooooooooooooooooooddddddddddddand Underbody bebebebebebebebebbebebebebebbeeeb twtwtwtwtwtwtwtttwtttwtwwt eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee n nnnnnnnn UnUnUnUnUnUnUUUUUnUnUUUndededededededededeeeddedededddeerhrhrhrhrhhrhrhrhrhhoooooooooooooooanananaaaaanaanananaaanaaaa ddddddddddd UnUnUnUnUnUnUnUnUUU dedededededeededeeeedderbrbrbrrbbrbrbrbbododododoododooodododo y yyyyyyyyyanananananananaaaannananaannaaaanddddddddddddd UnUnUnUnUnnnnnndededededededededdededdedeerbrbrbrbrbbrbbrbrrbbrrrrbbodododododododddodddoodododo yyyyyyyyyyCoolant Linesananananananaaaaanaanaaaanddddddddddddddddd UnUnUUnUnnUnUnUnUUUnUUUU dedededededededdededdedededededeerbrbrbrbbbbrbbbrbrbbbbodododododododododododdoooddyyyyyyyyyyyyyyyyyyyCoCoCoCoCoCoCoCoCoCooCoCoCoCCoCCoCCCoCoooloololoolololooloolooolooooloo anananaanaaananananaaaaananaaananaaa t ttt tttttttttttttt LiLiLiLiLiLLiiLiLLiineneneneneneneneeneneneeneeneeeeeesssssssssssssssssssssCoCoCoCoCoCCCCCoCCoCoCoCCooolololoolooooooo anananananananaaaanananananna ttttttttttt LiLiLiiLiiiinenenenenennennneeeennessssssssssss

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Chrysler Pacifica (Gas)

• Valve cores are serviceable• Low Pressure Port near center of the

bulkhead• High Pressure Port on RF Inner Fender


• Denso Variable Displacement Compressor

• Delphi Variable Displacement Compressor


Delphi R-1234yf A/C Compressors use Part Number 68232939AB(PS-D1) PAG Oil

Chrysler Pacifica ((Gas)HVAC - Electrical System Communication

Front HVAC

Control Module

Front HVAC Unit

HVAC Blower

HumiditySensor

BCM PCM

Compressor

= CAN IHS= CAN C = LIN= Power

mpressorClutch

Rear ICSFront ICSRadio

Rear HVAC

Control Module

RearHVAC Unit

HVAC Blower

VRM

Solar Sensor

In car Sensor

Solenoid

36

The Pacifica has a Rear HVAC Control Module that communicates directly with the Rear HVAC unit where as in the old Town and Country or Dodge Durango the rear HVAC Unit is wired to the Front Control Module

Chrysler Town & Country, Caravan and Dodge DurangoFront

HVAC Control Module

Rear HVAC

Control Module

RearHVAC Unit

Chrysler Pacifica

= CAN B= CAN C = LIN= Power

Front HVAC

Control

RearHVAC Unit

Chrysler Pacifica (Gas)HVAC - Electrical System Communication

Chrysler Pacifica PHEV

381/15/2018

CChrysler Pacifica PHEV

Chrysler Pacifica PHEVThermal Management System

RU PHEV – Cooling System

1) Power Electronic coolant loop (Low Temp 70°/80°C)2) Engine coolant loop (High Temp 90°/100°C)3) Battery coolant loop (-40°/60°C)

High Voltage Heater

50W pumpInter loop

heat exchanger

100W pumpHigh Temp

Radiator

Low Temp Radiator

Condenser

3 Hot Bottles2 @ 5 psi1 @ 21psi

Battery

50W pump

3 way on/offv

alve

Proportional valve

PIM


Engine Coolant System

Electric A/C Compressor (EAC)

Cabin Front HVAC

TXV

Front Refrigerant Shut off Valve NO High Temp Loop

17.2mm Low Temp Loop

Liquid R1234yfGas R1234yf

T

TemperatureP

Pressure

Airflow

A/C Condenser

Ambient

Active Grill Shutter

Rear Evap TXV

Rear Cabin HVAC

Tevap

Evaporator

Airflow

Sensors

Battery

Inter loop Heat Exchanger

Tdischarge

ChillerTXV

Shut Off Valve NO

Airflow

Mech 1 Rev H Final Mar 17th, 2015

Battery LoopTrans Loop

Low Temp Active Pump (100 watt LIN MAIN)

PA/C-high

Tdischarge

11.9mm Low Temp Loop

3mm

Orific

e

HV_BTIS

HV_BTOS

5 PSI Bottle CapSmall Opening

Coolant level sensor

Pacifica PHEV Refrigerant & Battery Loop

HHigh Temperature SShut--off Valve-Directs Coolant thru the Electric Coolant Heater (EHC)


Maintains temperature within the High Voltage Battery Pack & used for cabin compartment heating if needed

Electric Coolant Heater (ECH)

HHigh Temperature Cabin Valve


Controls coolant flow to the Inter-loop Heat Exchanger for the HV Battery pack

Helps heated coolant flow to front and rear heater cores and the Inter-loop Heat Exchanger

High Temperature Auxiliary Pump

PPower Electronics Cooling SystemChrysler Pacifica PHEV

Low pressure system using an electric coolant pump to force coolant thru:• APM• OBCM• PIM• Trans oil cooler• Low temp

radiator

LLow Temperature Passive Cooling System Components



Transmission CoolerControls e-motor temp

HHigh--vvoltage Battery Pack Cooling System

Chrysler Pacifica PHEVLow pressure system which controls coolant flow thru:• Battery Chiller• HV Battery Pack• Inter-loop heat

exchanger• Coolant reservoirPurpose is to maintain a consistent temp inside the HV Battery• R1234yf flows thru the

Battery Chiller to cool down or maintain HV Battery Pack temp

IInter--loop Heat Exchanger, Battery Chiller & Low Temp Active Pump


LLow Temp Active Pump and Battery Chiller Location View


IInter--lloop Heat Exchanger



HV Battery Chiller• Removes heat from the

HV Battery pack• R1234yf passes across

the coolant tubes

Chrysler Pacifica PHEV Chiller UnitShut-off valve Thermal Expansion Valve, TXV

Chiller heat exchangerCoolant tube Coolant tube

Refrigerant connectors


Denso ES34 High VoltageElectric A/C Compressor• 34cc variable speed scroll compressor• 3 phase DC motor

EElectric A/C Compressor Fuse Location

2Chrysler Pacifica PHEV

AA/C Test Ports


Pacifica (RU) Refrigerant & Compressor Oil

1/15/201857

2017 RU Gas R1234yf + PAG

2017 RU PHEV R1234yf + POE

2017 RU PHEV EVA(Electric Vehicle Autonomous) Google / Waymo test fleetR134a + POE

Pacifica EVA

Battery and Cabin share same heating/ cooling system● Can heat one while cooling the other

Engine and electric heater used in concert for heating● Electric heater shuts off >180°F coolant temp● <30-35°F engine will start regardless of battery charge unless coolant is already hot● Up to ~50°F engine may start if HVAC heat/blower settings are high enough● Engine and/or electric heater will run even if HVAC is off. Display might show climate power usage

>0 kW.

Electric compressor used for cabin/battery cooling● No belt. Engine doesn’t have to be running.● Noise can be noticeable if EAC is running at high speed with engine off● As battery cooling cycles on and off customer might notice a brief increase in outlet air temp.

HVAC sends evaporator and heater target temperatures to Hybrid Control Processor (HCP). HCP drives compressor/engine/electric heater to meet target temperature.

Pacifica PHEV Climate Control

Heat to -3C (27°F) cell temp●If <-33°C customer will be instructed to plug-in●Between -33°C and -30°C, start will be delayed●Will maintain above -29°C if plugged in●Above -30°C cabin heating has priority

Cool at 38°C cell temp (100°F)●3°C hysteresis. Cooling will cycle.●Battery and cabin are cooled simultaneously unless battery exceeds 52°C●Must plug-in and condition battery if cell temp is >54°C

Pacifica PHEV Battery Conditioning

Power electronics pump will run to cool OBCM●Cooling fan will run if OBCM gets hot enough

Battery is heated and cooled during charging, if required●Pop-up message will ask customer to plug in vehicle if ambient

temperature is <32°F●Thresholds are -10°C and 40°C for 120V charge and -5°C/38°C for 240V

charge, subject to power limits from charger.●A/C compressor and cooling fan will run if battery cooling is required●Cabin heating and cooling is enabled if the key is in ‘RUN’ while

charging. Battery charge might be depleted.

Pacifica PHEV Plug-in Charging

All thermal system components related to heating or cooling battery, motors, or electronics are diagnosed for OBDII requirementsPumps, Electric Coolant Heater, Compressor, and Fan are smart devices.Some faults are especially critical

▲ Motor Electronics Coolant Pump 1 Control Performance□ Pump will run at default speed if communication is lost but power is still present

▲ Coolant Bypass Valve “A”

Pacifica PHEV Diagnostics / Sensors

Sensor Control Module

Engine Coolant Temperature ECM

Coolant heater inlet, Heater Core inlet, and Low Temp Pump inlet coolant temp sensors

HCP

On Board Charger Coolant Temp Out BPCM

Refrigerant Pressure HCP

Electronic Component Temps HCP

Interior Temp/humidity HVAC

Exterior Ambient Temp CBC/ECM

Pacifica PHEV Component ControlComponent Control ActuationHigh Temp Aux Pump HCP HCPElectronics Coolant Pump HCP HCP

Battery Coolant Pump HCP BPCMA/C Compressor HCP HCPElectric Coolant Heater HCP HCPEngine Cooling Fan HCP/PCM HCPHigh Temp Shutoff Valve HCP HCPHigh Temp Cabin Valve HCP HCPEvaporator Refrigerant SOV HCP HCP

Chiller Refrigerant SOV HCP HCPTransmission Aux Pump HCP HCPHVAC Blower/Mode/Temp HVAC HVAC

Evac and fill is recommended●Gravity fill is possible, but requires pressurizing reservoirs and/or

clamping hosesSame coolant used for all circuits●De-ionized water required for low temp circuit

Low Temp and Battery circuits have smaller 5 psi locking capAll three electric pumps appear identical, but they are not interchangeable●Battery pump has three pin connector, LT and HT pumps have 4 pin

connector●HT and LT pumps have unique LIN IDs

Pacifica PHEV Coolant System Service

1979 2003

Why HFO-1234yf?

Meet the directive for a refrigerant with a Global Warming Potential (GWP) of less than 150

Lower GWP refrigerant, A/C system leak reduction & A/C efficiency improvements provide credits for the manufacturer towards the CO2 requirement

3 types of A/C credits available:Direct Credits 1. R-1234yf alternative refrigerant 2. Refrigerant leak reductionIndirect Credits3. System efficiency improvements

Why R-1234yf?

Developed by DuPont & Honeywell• Solstice™yf Refrigerant (R-1234yf) See www.1234facts.com

• Similar procedures & processes compared to R134a

R-1234yf

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Mopar Service Information - Tech Authority

https://www.techauthority.com► Updated website for FCA Service Info

► Links to special tools and equipment

► 3 Day, 30 Day or 1 year subscriptions

► 1996 to present Service & Diagnostic Info, Wiring Diagrams, Owner’s Manuals, Parts Catalogs, Service Bulletins, Collision Repair, J2534 Flash Files, Training Publications

► TechTOOLS

•DRB III flash files•DRB III data (flight) recorder for engine and trans•Software updates for DRB III (1983-07)

70

• FASTER TECHNOLOGY...significant improvements to speed, performance, and ease of use

• MOBILE ACCESSIBILITY...web application not restricted to desktop or laptop computers. Choose any compatible hardware (smart phone, tablet, iPad etc.)

• Similar screen layout as wiTECH 1.0• More streamlined flash process• Simpler to install and update, eliminates application software installation

or updates on your computer.• Rapid deployment of vehicle support, updates or fixes.• Requires internet access for road testing. (MiFi hotspot recommended)

• Alfa Romeo 4C / Giulia (GA) Stelvio (GU)

• FIAT 500 (FF) / 500L (BF-BG) 500X (FB) / Spider (BA)

• Ram 1500 (DS/DT)• Jeep Grand Cherokee (WK)• Jeep Wrangler (JK/JL)• Jeep Cherokee (KL)• Jeep Renegade (BU)• Jeep Compass (MP)

2014-18 FCA NAFTA R-1234yf Phase in

• Chrysler Pacifica (RU)• Chrysler 200 (UF)• Chrysler 300 (LX)• Dodge Durango (WD)• Dodge Challenger (LA)• Dodge Charger (LD)• Dodge Dart (PF)• Dodge Journey (JC)

Sales Code - XFC = Identifies Vehicles Built with R-1234yf

XFC R-1234yf A/C Refrigerant

• Ram 1500• Jeep Cherokee• Jeep Renegade / FIAT 500X (2.4L Only)• Jeep Compass (MP 2.4L Only)• Chrysler 200 and 300• Dodge Challenger / Charger / Journey• Dodge Dart (2.0L / 2.4L Engines)• Jeep Grand Cherokee / Dodge Durango

(3.0L/5.7L/6.4L Engines)• FIAT 500 / Spider - Denso SCS806 • Alfa Giulia - Denso - 6SBU14

FCA R-1234yf Denso A/C Compressors

Jeep Renegade Ram 1500 3.0L

Jeep Cherokee

• Hanon Systems (Halla - Visteon)• Jeep Wrangler (JK)• Jeep Grand Cherokee / Dodge

Durango - 3.6L Engine

FCA R-1234yf A/C Compressors (NAFTA)Jeep Grand Cherokee

Jeep Wrangler (JK)Dodge Durango

• Dodge Dart• 1.4L Turbo• Fixed Displacement

• FIAT 500L• Fixed Displacement Delphi 5CVC

• Jeep Renegade / FIAT 500X / FIAT 124 Spider / Jeep Compass (MP)• 1.4L Turbo• Variable Displacement

• Alfa Romeo 4C• Variable Displacement

• Chrysler Pacifica (Gas)• Variable Displacement

FCA R-1234yf Delphi A/C Compressors

Mopar 10 lb. cylinders• Part Number 68224028AB priced per oz.

with an MSQ (minimum sales quantity) of 160 (160 oz. = 10 lbs.)

• Part quantity: Dealers bill the amount of refrigerant used for the repair, which is the difference between the recovered amount and the charged amount as shown on the print out from the A/C machine

• Current list price is $10.85 per oz. or $1,736.00 per 10 lb. cylinder

R-1234yf A/C Refrigerant

R-1234yf System Modifications

R-1234yf Compressor Oil

• R-1234yf vehicles require new oils• DO NOT use R134a PAG oil in R-1234yf

systems as it lacks the acid reducer required for R-1234yf systems

• Denso Compressors use PAG ND-12 oil which is backwards compatible with some R134a systems (Replaces ND8 PAG oil)

• ND-12 Compressor Oil Part Number 68224150AB

* FD46XG and ND12 PAG oils are compatible with R-1234yf and R134a


Hanon Systems A/C Compressors use Part Number 05114554ACVC PAG 46 (FD46XG) Oil

Delphi R-1234yf A/C Compressors use Part Number 68232939AB(PS-D1) PAG Oil


Chrysler Pacifica PHEV• Denso ES34 Electric A/C Compressor• Part Number 68043289AB ND-11 POE Oil

Typical Refrigerant Oil Capacities

CAUTION: Be certain to adjust the refrigerant system oil level when replacing an A/C compressor. Failure to properly drain and measure the refrigerant oil from the A/C compressor can prevent the A/C system from operating as designed and cause serious compressor damageSame Compressor Oil Drain Procedure as other FCA Vehicles• Drain all of the refrigerant oil from the old A/C compressor• Drain all of the refrigerant oil from the new A/C compressor• Refill the new A/C compressor with the same amount of refrigerant oil drained

from the old compressor

A/C Clutch & Coil

Control Solenoid

Denso 7SBH17C R-1234yf Compressor

Denso 7SBH17C Variable Displacement Compressor

High Pressure Relief Valve

Integral Control Solenoid to reduce or increase the stroke of the pistons by adjusting the angle of the swashplate


A/C ClutchPulley

Swashplate Pistons

Control Solenoid

• A/C Clutch Relay in PDC controlled by the PCM• Control Solenoid is controlled by the HVAC Module• HVAC Module calculates compressor displacement based on A/C load &

demand• Monitored inputs include Vehicle Speed, High side pressure, Engine RPM, Evap

temp, In Car temp, Accelerator position, Ambient temp, Humidity & A/C request. • HVAC module sends a 12 volt PWM signal to the Control Solenoid to

increase or decrease refrigerant flow • Controls the angle of the swashplate• Regulates the pressure exerted on the rear of the pistons. Increased pressure

reduces the length of the stroke• With low A/C demand, swashplate is adjusted to nearly a zero degree angle to

reduce drag & improve MPG



Maximum duty cycle 100% = Compressor at maximum displacement Minimum duty cycle 11% = Compressor at minimum displacement

• High pressure relief valve vents at 3445-4135 kPa (500-600 psi)• High pressure relief valve closes at 2756 kPa (400 psi) or below• PCM monitors high-side pressure through the A/C Pressure Transducer

• High Pressure Cut-out above 3140 kPa (455 psi) • A/C Clutch will re-engage below 2450 kPa (355 psi)

• Low Pressure Cut-out below 110 kPa (16 psi)• A/C Clutch will re-engage above 221 kPa (32 psi)


Typical R-1234yf A/C Performance TestOperate the HVAC system under the following conditions• Ambient temp: 15.5°C (60°F) to 43.3°C (110°F)• Relative humidity: 20% to 90% • Engine idling at normal operating temp• No sun-load, doors & windows closed • A/C heater controls set to Recirc mode, full cool, panel mode, high

blower with A/C compressor engaged. • With a scan tool, actuate the engine cooling fans to high speed• Insert a thermometer in the driver side center panel air outlet & operate

the A/C system until the thermometer temp stabilizes or a minimum of five minutes

• With the A/C clutch engaged, compare the panel outlet air temp, ambient temp & relative humidity to the Maximum Panel Outlet Temperature chart.

Typical R-1234yf A/C Performance Test

Similar to Chrysler R134a Performance Tests – See Service Info for specific operating parameters & testing conditions

R-1234yf Evaporator

A/C evaporator tubes

Tapping block & O-ringseals

Evaporator fins

New high efficiency evaporators must meet SAE J2842

R-1234yf Evaporator Label

CautionsTech must be certified

Dispose of properly

See service procedures

R-1234yf evaporators must comply with the J2842 SAE design & certification safety standard. This standard addresses flammability risk associated with R-1234yf refrigerant, high pressures, & possible poisoning in the event of a release of refrigerant in the passenger compartment. J2842 guidelines state that a faulty evaporator cannot be replaced with a used evaporator from another vehicle or from a salvage yard

Cabin Air Filter

Cabin Air Filters are now standard on most FCA vehicles Replace every 2 years or 20,000 miles

Recalibrated for the thermodynamic properties of R-1234yf

R-1234yf Expansion Valve

• Thermostatic expansion valve (TXV) design

• Aluminum H-valve type body, with integral thermal sensor

• Similar test procedure to Chrysler R134a Systems

• See Service Info for specific operating conditions & test procedure

• Freeze the A/C expansion valve control head for 30 seconds using liquid CO²

• Suction pressure should drop by at least 69 kPa (10 psi)

• Allow expansion valve control head to thaw. Suction pressure should stabilize at 207 kPa to 345 kPa (30 psi to 50 psi)

R-1234yf Expansion Valve

H-Valve

• Tapping blocks for A/C refrigerant lines• Integral Receiver Drier• Condenser & Receiver Drier are currently not serviced

separately & replaced as an assembly

R-1234yf Condenser & Receiver Drier

CondenserA/C LinesReceiver Drier

• The AGS system is controlled by the PCM via LIN bus• When ambient & coolant temperatures are below a

specified threshold, airflow across the radiator is not required

• When vehicle speeds reach a calibrated threshold, the PCM will command the shutter vanes to close

Active Grille Shutters (AGS)

Integrated IHX Assembly

Integrated IHX Assembly

From Evap

To Evap

From Cond

To Compressor

R-1234yf A/C Lines – Integrated IHX

Hose in Hose Internal Heat Exchanger Line (IHX)• Co-axial design with the liquid line to the evaporator on the outside & the

suction line to the compressor on the inside.• Improves A/C efficiency & performance• Also used on some FCA R134a vehicles

• Larger diameter R-1234yf ports to prevent cross-contamination• Higher collar & shoulder on High-Side port prevents R134a couplers

from attaching to the R-1234yf service ports

R-1234yf New Service Ports

• R-1234yf service caps are gray in color• R134a service caps are black in color

R-1234yf New Service Caps

• Must meet SAE & ISO standards - SAE J2843• Integrated Refrigerant Identifier

R-1234yf Recovery/Recycle/Recharge Equipment

Robinair R-1234yf A/C Machine

Robinair Model 10500 essential tool (similar to the Robinair AC1234-6)

mopar.snapon.com


DLC Connector

Oil Drain

Identifier & Filter

Filter ISV


R-1234yf A/C machine print out provides: • Date & Time• Ambient Temp & Humidity • High & Low Side Pressures • Amount of R-1234yf Recovered • Amount of R-1234yf Charged • Purity of refrigerant & % of air • Vehicle Identification Number • Warranty code

R-1234yf A/C Machine

• The ArcticPRO ACX1280M meets SAE J Standards & features fully automatic servicing

• Generates FCA Warranty Codes on Printout.

MAHLE Arctic Pro R-1234yf A/C

Adding Refrigerant Oil• Empty the oil drain bottle before starting a recovery• Oil collected drains into the graduated oil drain bottle• Remove the bottle and measure oil• Amount of oil removed from the A/C system is the amount of new oil

to be charged into the A/C system after evacuation is complete• Oil removed from the A/C system during recovery process should be

manually injected into the A/C system prior to recharging the system.

Adding Refrigerant Oil

• A standalone R-1234yf Oil Injector is recommended to add oil. Mopar Service Equipment has the FCA approved equipment - mopar.snapon.com

Robinair 18460 Oil injector for R-1234yf

• Large Oil Injector For R1234YF• Item Number: AIR90024

2012 & later FCA vehicles with R134a or R-1234yf have leak detection dye installed at the factory• A wafer is installed into the

receiver drier desiccant bag during manufacturing

• Wafer dissolves when the A/C system is filled at the assembly plant & the dye then circulates throughout the system

Factory installed Leak Detection Dye

www.tracerline.com

Factory installed Leak Detection Dye

Leak Detection Dye

Mopar R134a / R-1234yf Leak Detection Dye Part Number - 04798219AC (supplied by Bright Solutions)

Bright Solution’s A/C Dye Products meet the new SAE J2297 Standard for both R134a and R-1234yf refrigerants www.brightsol.com (now Stride Tool)

Leak Detection

BRIGHT SOLUTIONS• Inline A/C dye injector for R1234yf system.• Item Number: BRS734YF

• Robinair 22791 R134a & R-1234yf Electronic Leak Detector is available to all FCA Dealers thru the Mopar Service Equipment (MSE) mopar.snapon.com

• 3 sensitivity levels down to 0.15 oz./year• Senses CFC, HFC, HCFC blends & R-1234yf refrigerants • Meets SAE J2913 for R-1234yf & SAE J2791 for R134a• Advanced infrared sensor designed to last 10 years• 8-hour lithium ion battery

Robinair 22791 Leak Detector

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IATInorganic Additive Technology – Up to 2000

HOATHybrid Organic Additive TechnologyOrange or Pink based on vendor2000 - 2012

OATOrganic Additive Technology - 2013

114

• Mixing HOAT & OAT coolant causes it to jell & plug cooling system & nullify additive package = no corrosion protection. Do not use OAT on older vehicles as it is designed for newer engine materials.

• Not all OAT coolants are the same, each manufacturer has their own formulation - Flush vehicle twice with water if ever mixed.

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Growth of Synthetic Oils

115

4% 5%9%

16%

30%

50%

2011• SRT Vehicles

2012• SRT Vehicles• Fiat 1.4 Turbo

2013• SRT Vehicles• Fiat 1.4 Turbo• Dart (all engines)

2014• SRT Vehicles• Fiat 1.4 Turbo• Dart (all)• Jeep Cherokee 2.4• Ram HD 6.4 Hemi• 3.0 V6 EcoDiesel

2015• SRT Vehicles• Fiat 1.4 Turbo• Dart (all)• Jeep Cherokee 2.4• Chrysler 200 2.4• Ram HD 6.4 Hemi• 3.0 V6 EcoDiesel• Jeep Renegade (all)• Alfa Romeo 1.8 Turbo• ProMaster 3.0 Diesel

2016-17• SRT Vehicles• Fiat 1.4 Turbo• Dart (all)• Jeep Cherokee 2.4• Chrysler 200 2.4• Ram HD 6.4 Hemi• 3.0 V6 EcoDiesel• Jeep Renegade (all)• Alfa Romeo 1.8 Turbo• ProMaster 3.0 Diesel• Grand Cherokee V6• Durango V6• Chrysler Pacifica V6 115115115111151111111151111111151511111

4% 5%9%

16%

30%

2011• SRT Vehicles

2012• SRT Vehicles• Fiat 1.4 Turbo

2013• SRT Vehicles• Fiat 1.4 Turbo• Dart (all engines)

2014• SRT Vehicles• Fiat 1.4 Turbo• Dart (all)• Jeep Cherokee 2.4• Ram HD 6.4 Hemi• 3.0 V6 EcoDiesel

2015• SRT Vehicles• Fiat 1.4 Turbo• Dart (all)• Jeep Cherokee 2.4• Chrysler 200 2.4• Ram HD 6.4 Hemi• 3.0 V6 EcoDiesel• Jeep Renegade (all)• Alfa Romeo 1.8 Turbo• ProMaster 3.0 Diesel

2016-17• SRT Vehicles• Fiat 1.4 Turbo• Dart (all)• Jeep Cherokee 2.4• Chrysler 200 2.4• Ram HD 6.4 Hemi• 3.0 V6 EcoDiesel• Jeep Renegade (all)• Alfa Romeo 1.8 Turbo• ProMaster 3.0 Diesel• Grand Cherokee V6• Durango V6•• ChChChryryryslslslererer PaPaPacicicififificacaca VVV666

505050%%%By 2017 Model Year over 50% of FCA Vehicles Require Synthetic Oil

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2018 FCAR-1234yf A/C Update

Thank you!Alan McAvoy

[email protected]

2018 fca r-1234yf a/c update - macsw.org · u ti & lilliiquqquuidiidd liniinne a/c...

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