air conditioning LAND ROVER FRELANDER 2 2006 Repair Manual

The las t t wo digi ts of t he number '01' indicate the part of the s ys tem covered by the s ub-s ecti on i.e. Air Conditioning(A/C) Compressor.

Rear seat belt s
Side Curtain Airbag Modul es
CAUTION: If the head ai rbag modules are depl oyed, t he fol lowing component s mus t be replaced on the si de of thevehi cl e on whi ch the deployment occurred:
Side curt ain ai rbag modulesHeadl iner and all pil lar t ri msLink l ead bet ween airbag gas generat or and RCM harnes sAirbag ret aining cli psFront s eat bel t buckle pre-t ens i onersAny s ide i mpact s ens ors t hat have been phys i cal ly damaged or if a fault i s being regi st eredRCM
Additionally, the following items must be inspected for damage and replaced as necessary:
Component mount ing bracketsFront s eat bel ts , ret ractors and webbing, tongue lat chi ng functi on, 'D' l oop and body anchorage point sRear seat belt buckl es, webbing, buckle covers , t ongue l atching funct ion, and body anchorage point sAdjacent t rim componentsSeat bel t hei ght adjust ers
Rear impacts
CAUTION: If the s eat belt pre-tens ioners are deployed during a rear i mpact , the following component s mus t berepl aced:
Seat bel t pre-t ensi onersFront and rear s eat bel t ret ractors used during t he i mpactRCM
Additionally, the following items must be inspected for damage and replaced as necessary:
Seat bel t hei ght adjust ersFront s eat bel ts , ret ractors and webbing, tongue lat chi ng functi on, 'D' l oop and body anchorage point sRear seat belt buckl es, webbing, buckle covers , t ongue l atching funct ion, and body anchorage point s
Air Conditioning System Precautions
The air condi ti oni ng s yst em contai ns fl ui ds and components which coul d be pot ent ially hazardous to the s ervi ce engineeror the environment if not serviced and handl ed correctl y. The foll owing guideli nes are i ntended to alert t he s erviceengi neer t o pot ent ial s ources of danger and emphas is e t he i mport ance of ens uring t he i nt egri ty of t he Air Condit ioningoperati ng condi ti ons and component s i ns t alled to the vehicle.
W here neces s ary, addi ti onal s pecific precaut ions are det ail ed in t he relevant s ecti ons of t his Manual and als o in the Heal thand Safet y Sect ion. Thes e precauti ons mus t be referred to prior t o commenci ng repair operat ions .
The refri gerant us ed i n t he air condi ti oni ng s ys t em i s HFC-134a (Hydrofl uorocarbon) R134a.
• W ARNINGS:
Servi ci ng mus t onl y be carried out by pers onnel famil iar wit h bot h t he vehi cl e s ys tem and t he charging and t es ti ngequi pment. Al l operat ions mus t be carried out i n a wel l venti lat ed area away from open fl ame and heat sources .
R134a is a hazardous l iquid and when handl ed incorrect ly can caus e s erious injury. Sui table prot ect ive clot hi ng,cons is t ing of face protecti on, heat proof gloves, rubber boots and rubber apron or waterproof overal ls , mus t be worn whencarryi ng out operat ions on t he air condit ioning s ys tem.
Remedial act ions
W ARNING: Due to it s low evaporat ing t emperat ure, R134a must be handled wit h care. R134a spl as hed on any part oft he body will cause immedi ate freezing of t hat area. Als o, refrigerant cylinders and replenis hment t roll eys whendis charging wi ll freeze s ki n t o t hem if contact is made.
If an accident involving R134a s houl d occur, conduct t he followi ng remedi al acti ons :
If liquid R134a ent ers t he eye, do not rub i t. Gentl y run large quant it ies of eye wash over affected eye t o rai s e t het emperature. If an eye was h is not avail abl e, cool, clean wat er may be us ed t o fl ush the eye. Aft er ri nsi ng, covert he eye wit h a clean pad and s eek i mmediat e medical at t ent ion.If liquid R134a is s plas hed ont o t he s kin, run large quanti ti es of water over t he affected area to rais e thet emperature. Implement t he s ame acti on if t he s kin comes i n cont act wi th dis chargi ng cyl inders . W rap t hecont aminat ed body parts in bl ankets (or s imi lar mat eri al s ) and seek i mmediat e medical att ent ion.If the debil it at ing effect s of inhalati on of R134a vapour are s us pect ed, s eek fresh air. If t he affect ed pers on isuncons ci ous , move t hem away from t he cont aminated area t o fres h air and apply arti fici al respi rat ion and/or oxygenand s eek immedi at e medi cal at tenti on.
Service precauti ons
Obs erve t he fol lowing precaut ions when handl ing component s us ed in the ai r condit ioning s ys tem:

Air Suspension
W henever work is bei ng undertaken on t he air s us pens ion s ys tem, s uit able eye prot ection must be worn.
Air Conditioning Refrigerant
Highly fl ammable, combus t ible – observe No Smoking poli cy.
Skin contact may res ult in fros tbi te.
Ins t ructi ons gi ven by the manufact urer mus t be followed. Avoi d naked li ght s , wear s uit able protecti ve gloves and goggles .
If refrigerant comes int o contact wit h t he s ki n or eyes , rins e t he affect ed areas with wat er immedi ately. Eyes s houl d als obe rins ed wit h an appropriate irri gat ion s olut ion s uch as a s olut ion of 9% Sodi um Chl oride and Purified W at er. DO NOTRUB T HE EYES AND SEEK IMMEDIAT E MEDICAL AT T ENT ION.
Air Conditioning Refrigerant
Do Not
Do Not expos e refrigerant bott les to s unli ght or heat.Do Not expos e refrigerant bott les to fros t .Do Not drop refrigerant bot tl es .Do Not vent refrigerant t o at mos phere under any circums t ance.Do Not mi x refri gerants .
Adhesives and Sealants
Many adhes ives and s ealants are hi ghl y fl ammable – OBSERVE NO SMOKING POLICY . Thes e it ems , s hould be s tored infl ameproof cabi net s in No Smoking areas . Cleanli nes s and t idi nes s i n us e s houl d be obs erved, for exampl e dis posablepaper covering benches . All adhesi ves and sealant s s houl d be dis pensed from applicators where pos s ibl e; contai ners ,including secondary cont ainers , s houl d be l abell ed appropri at ely.
Anaerobic, Cyanoacrylate (super-g lues) and other Acrylic Ad hesives
Many are irrit ant, s ensi ti zing or harmful to the s kin and res pirat ory t ract . Some are eye i rrit ants .
Skin and eye contact should be avoi ded and the manufact urer's ins t ructi ons foll owed.
Cyanoacrylat e adhes i ves (s uper-gl ues ) MUST NOT cont act t he s ki n or eyes . If s ki n or eye ti s sue i s bonded, cover wi th aclean moi st pad and SEEK IMMEDIAT E MEDICAL AT T ENT ION. Do not att empt to pul l ski n t is sue apart. Us e i n wellvent il ated areas as vapors can caus e irri tat ion t o t he nose and eyes .
For two-pack s yst ems s ee Res in-bas ed and Is ocyanat e Adhesi ves /Seal ers .
Solvent-based Adhesives/Sealers - See Solvents
Follow manufacturers ins t ructi ons .
Water-based Adhesives/Sealers
Thos e bas ed on polymer emul si ons and rubber/latex may cont ain s mal l amount s of vol ati le, toxic and harmful chemicals .Skin and eye contact should be avoi ded and adequate vent ilat ion provi ded during us e.
Hot Melt Adhesives
In the sol id s t ate, t hey are s afe. In t he molt en s tat e t hey may caus e burns and healt h hazards may aris e from t heinhalat ion of t oxi c fumes .
Us e appropri at e protecti ve cl othing and a t hermos tat ical ly controll ed heat er wit h a t hermal cut-out and adequateextract ion.
Resin-based Adhesives/Sealers, for examp le Epoxide and Formaldehyde Resin-based
Mixi ng s hould be carri ed out in wel l vent il at ed areas as harmful or t oxi c vol ati le chemicals may be rel eas ed.
Skin contact wit h uncured res i ns and hardeners can res ult i n irri tat ion, dermat it is , and abs orpt ion of t oxic or harmfulchemical s t hrough the ski n. Splas hes can damage the eyes .
Provide adequat e venti lat ion and avoid s kin and eye contact .
Isocyanate (Polyurethane) Ad hesives/Sealers
See als o Res in-bas ed Adhesi ves
Indi vi dual s s uffering from as thma or res pi rat ory al lergi es should not work wi th or near thes e mat eri al s as s ensi ti vi tyreacti ons can occur.
Over expos ure i s irri tat ing t o t he eyes and res pirat ory sys tem. Excess ive concent rations may produce effects on thenervous s ys t em i ncl udi ng drows ines s. In extreme cas es , l os s of conscious ness may result . Long term expos ure to vapourconcentrati ons may res ult i n adverse heal th effect s.
Prol onged contact wit h t he s ki n may l ead to s ki n irri tat ion and i n s ome cas es , dermat it is .
Splas hes ent eri ng the eye wi ll cause di s comfort and pos si ble damage.

Publi shed: 06-Jul-2011
General Information - Diagnostic Trouble Code (DTC) IndexDTC: Heating
Ventilation and Air Conditioning Control Module (HVAC)
Des cript ion and Operat ion
• NOTE: If a cont rol module or component i s s uspect and the vehicl e remai ns under manufacturer warrant y, refer t o t heW arranty Pol icy and Procedures manual (s ect ion B1.2), or determine i f any pri or approval program is i n operat ion, beforet he replacement of a component.
• NOTE: Generic scan t ool s may not read the codes li st ed, or may read only 5-digi t codes . Match t he 5 digi ts from t he s cant ool t o t he fi rs t 5 di gi ts of the 7-digit code li s ted t o i dent ify the fault (the last 2 digi ts gi ve ext ra informati on read by themanufacturer-approved di agnos ti c s ys t em).
• NOTE: W hen performing volt age or res is t ance t est s , always use a digi tal mult imeter (DMM) accurat e t o t hree deci malplaces, and wi th an up-t o-date cal ibrat ion cert ificate. W hen tes ti ng res is t ance al ways take t he res is t ance of t he DMMleads i nt o account .
• NOTE: Check and recti fy bas ic faul ts before beginni ng diagnos t ic rout ines i nvol vi ng pinpoint t es t s.
• NOTE: Ins pect connect ors for s igns of water ingres s , and pins for damage and/or corros ion.
• NOTE: If DTC's are recorded and, after performi ng t he pinpoint tes t s, a fault i s not pres ent , an i nt ermit tent concern maybe t he caus e. Always check for loose connect ions and corroded terminals .
For addit ional informat ion, refer t o: Cli mate Cont rol Syst em (412-00 Cl imat e Control Sys tem - General Informat ion,Diagnosi s and Tes ti ng).
Heating ventilation and air conditioning control module (HVAC )
DT CDescriptionPossible CauseAction
B102E-09Air quali ty s ens or generalfai lure informati on -Component fai lures
Int ernal s ens or faultInst all a new air qual it y s ensor
B102E-11Air quali ty s ens or generalelectrical fail ures - Ci rcuits hort to ground
Air quali ty s ens or circui t -s hort to groundIncorrect cli mat e cont rolmodule i nst all ed
Refer t o t he electrical ci rcuit diagrams and checkair quali ty sens or ci rcuit for short to ground. Inst alla new cl imat e control modul e as required, refer t onew modul e/component ins t al lat ion not e at thet op of the DTC Index
B102E-12Air quali ty s ens or generalelectrical fail ures - Ci rcuits hort to bat t ery
Air quali ty s ens or circui t -s hort to powerAir quali ty s ens or - O pencircuit
Refer t o t he electrical ci rcuit diagrams and checkair quali ty sens or ci rcuit for short to power. Ins tal la new air qualit y s ensor as requi red
B1030-09Left front s eat heatergeneral fail ure i nformat ion- Component failures
Seat heat er modul eint ernal fail ureInst all a new seat heater module, refer to the newmodule/component ins tal lati on note at the t op oft he DTC IndexB1030-4BLeft front s eat heaters ys t em i nternal fai lures -Over temperat ure
Seat heat er modul eint ernal fail ureSens or incorrect /nofeedback
Cl ear DTC and re-t es t. If DTC remai ns ins tal l a news eat heat er modul e, refer t o t he newmodule/component ins tal lati on note at the t op oft he DTC Index. Ins t all a new front s eat heat er mat
B1030-87Left front s eat heater buss ignal/mess age fai lures -Mis s ing mess age
LIN bus ci rcuit or s eatheat er module powers uppl y ci rcuit fault
Refer t o t he electrical ci rcuit diagrams and checkt he front left seat heater module LIN Bus circui t,power and ground s uppl y circuit s for short ci rcuit t oground, s hort circuit t o power, open circui t, hi ghresi st anceB1032-09Right front seat heatergeneral fail ure i nformat ion- Component failures
Seat heat er modul eint ernal fail ureInst all a new seat heater module, refer to the newmodule/component ins tal lati on note at the t op oft he DTC Index
B1032-4BRight front seat heaters ys t em i nternal fai lures -Over temperat ure
Seat heat er modul eint ernal fail ureSens or incorrect /nofeedback
Cl ear DTC and re-t es t. If DTC remai ns ins tal l a news eat heat er modul e, refer t o t he newmodule/component ins tal lati on note at the t op oft he DTC Index. Ins t all a new front s eat heat er mat
B1032-87Right front seat heater buss ignal/mess age fai lures -Mis s ing mess age
LIN Bus ci rcuit or s eatheat er module powers uppl y ci rcuit fault
Refer t o t he electrical ci rcuit diagrams and checkt he front ri ght s eat heat er module LIN Bus circui t,power and ground s uppl y circuit s for short ci rcuit t oground, s hort circuit t o power, open circui t, hi ghresi st anceB1034-01Left front s eat heaterelement general fail ureinformat ion - Generalelectrical fail ure
Element damaged, opencircuitRefer t o t he electrical ci rcuit diagrams and checkt he left front seat heater element circui t for opencircui t
B1035-01Left rear s eat heat erelement general fail ureinformat ion - Generalelectrical fail ure
Element damaged, opencircuitThis DTC wil l onl y log in vali dat ion mode. No hel pt ext requi red
B1036-01Right front seat heaterelement general fail ureinformat ion - Generalelectrical fail ure
Element damaged, opencircuitRefer t o t he electrical ci rcuit diagrams and checkfront ri ght seat heater element circui t for opencircui t

The s peed control inhibit swi tch i s att ached to t he brake pedal bracket , adjacent t o t he s top l amp s wit ch. W hen the brakepedal i s pres s ed, a pl ate on the pedal moves away from t he s wit ch plunger al lowing the pl unger to ext end and completet he swit ch contact s.
The s wit ch receives a power s upply from t he CJB which s enses the complet ed ground path when the s wi tch i s operated.The s wit ch has two functi ons ; it is us ed for s t art ing purpos es when the brake pedal mus t be pres s ed before engi necranking i s allowed and it is used t o s us pend speed cont rol operat ion when s peed cont rol i s act ive and t he brake pedal ispres s ed.
The CJB can diagnos e t he operat ion of t he speed control i nhibit s wi tch and t he s tat us of the s wi tch can read us ing a LandRover approved diagnost ic sys tem.
Main Relay
The main rel ay is l ocat ed in the BJB. The operati on of the mai n rel ay is cont roll ed by t he ECM which provi des a groundpath for the main relay coil , energi zing t he rel ay and cl osi ng t he rel ay cont act s.
The main rel ay suppli es bat t ery volt age to the foll owing engine s ensors and act uators:
Electric t hrot tl e - TP s ensor (via ECM)Fuel i njectorsIgni ti on coi lsCoil Capaci torVari abl e inl et cam profile swit ching sol enoi d - front and rearInt ake tract variable mani fol d mot orPlenum variable i ntake manifold motorHO2SPurge valveFuel t ank leakage monit oring pump (NAS onl y).
Air Conditioning (A/C) Pressure Sensor
The refri gerant pres sure s ens or provides t he Air Temperat ure Cont rol (ATC) module wit h a press ure input from t he highpres s ure s ide of t he refrigerant s ys t em. The refri gerant press ure s ens or is hardwired to the ECM, which us es t he s ignal t ocont rol operat ion of t he A/C compress or and to cal cul at e t he addit ional l oad on t he engi ne when t he A/C compress or isoperati ng.
The ECM al so broadcas ts the refrigerant high press ure val ue over t he high s peed Controller Area Network (CAN) bus t o t heCJB. The CJB relays the si gnal t o t he ATC module over t he medium speed CAN bus t o i ncreas e the amount of recircul at edair i f required.
Air Conditioning (A/C) Relay
The A/C rel ay is l ocat ed in the BJB. The operati on of the A/C relay i s cont roll ed by t he ECM whi ch provi des a ground pat hfor t he A/C rel ay coi l, energizi ng the relay and clos ing the relay cont acts .
W hen t he rel ay cont act s are clos ed, batt ery vol tage i s s uppl ied via the relay t o t he A/C compress or clut ch. The ECMcont rol s the operat ion of t he vari abl e dis placement compress or us ing a s i gnal li ne to t he compress or and received s ignalsfrom the A/C pres s ure sens or.
Air Conditioning Compressor Control
Compres s or di spl acement is cont roll ed by t he ECM bas ed on current evaporator t emperature and target evaporat ort emperature s ignals received from t he ATC module. From thes e values t he ECM calcul ates t he requi red compres s ordis placement and provi des a Puls e W idt h Modul ated (PW M) s i gnal t o t he compress or s olenoi d valve. The compress ors olenoi d valve i s mounted on the rear of t he compres s or and i nterprets the PW M s ignal as a dis placement val ue and alt erst he pos i ti on of the i nternal s wash plate accordi ngl y.
The ECM wi ll als o reduce t he dis placement of the A/C compres s or to i ts mini mum l evel i f 'ful l throt t le' or aut omati ct ransmis s ion 'ki ck down' is request ed. Thi s feat ure i s not pres ent on Gul f s pecificati on vehi cl es. Compress or clutchengagement is cont roll ed by t he ECM.
Engine Cooling Fan Control
The ECM has a hardwired connect ion wit h t he cooli ng fan cont rol module. The ECM output s a PW M s ignal to the fan cont rolmodule whi ch rel at es t o t he required fan s peed. The fan s peed is det ermi ned by factors s uch as engi ne coolantt emperature and A/C operati on. The fan cont rol module react s t o t he received s ignal by cont roll ing t he operat ing volt age of

The posi ti on of the inlet cams haft is det ermi ned by the ECM us ing s ignals from t he CKP s ens or and t he CMP s ens ors. TheECM can t hen use the VCT sol enoid val ve to cont rol t he angl e of the cams haft by controlli ng t he fl ow of oil t o t he VCT unit .
The camshaft is s ecured t o t he rot or in t he VCT unit . Oil pres s ure suppli ed to eit her s ide of t he VCT unit from t he VCTs olenoi d valve can rot ate the rotor and hence the cams haft i n eit her di recti on. The VCT sol enoi d is operat ed by t he ECMus ing PW M, hi gh frequency s wit chi ng which provi des rapid and preci se cont rol of the i nlet cams haft pos i ti on. The i nletcamshaft pos i ti on can be adjust ed wi thi n 40 degrees of cranks haft rotat ion.
Camshaft Profile Switching (CPS) Control
The inl et cams haft has , in addit ion to t he VCT control, a CPS funct ion whi ch is al so cont roll ed by t he ECM. The CPS cont rolcan vary t he val ve li ft height and durat ion of t he camshaft lobes by adjus ti ng the area of t he hydraul ic t appet whi ch act son one of t wo cam l obe profi les . The CPS cont rol is vi a t wo CPS s olenoid valves , located at each end of the i nlet cams haft.The CPS s olenoid valves cont rol t he posi ti on of hydraul ic t appet as s embli es which can be s et in one of t wo pos it ions; lowand high.
Two CPS s olenoids are us ed so that t he hydraul ic t appet s can be adjus t ed when no load i s applied, for example the camlobes are off t he hydraul ic t appet s and t he cam bas e circl e is act ing on t he t appet , thi s keeps t he s tress on components toa minimum. One CPS s ol enoi d s uppl ies oi l press ure to the hydrauli c t appet s of cyli nders 1, 2 and 4 and the s econd CPSs olenoi d s uppl ies oi l press ure to the tappet s of cylinders 3, 5 and 6.
At engi ne s tart and at low engine oi l temperat ures (below 40°C (104°F)) the ECM does not direct engine oi l pres sure t ot he hydraul ic t appet s and t herefore the hydraul ic t appet s are in t heir s pring loaded, l ow posi ti on.For addit ional informat ion, refer t o: Engi ne - 3.2L (303-01, Descripti on and Operat ion).
Ignition Control
The ECM calculat es the opt imum ignit ion ti ming bas ed on pre-programmed maps and informat ion from t he foll owings ens ors :
CKP s ensorCMP s ensorsMAF s ensorECT s ens orElectric t hrot tl e TP s ensorKnock s ens orsTCMIgni ti on coi ls .
Duri ng engi ne s tarti ng the ECM uses a fi xed ignit ion s et ti ng. W hen the engine has s tart ed and the vehicle is bei ng driven,t he ECM adjus ts the i gni ti on t imi ng accordi ngl y us ing ot her paramet ers s uch as engine s peed, l oad and temperat ure.
Once the engi ne has reached i ts normal operati ng temperature, t he ECM moni tors the si gnal s from the knock sens ors . Ifany of the cyli nders produce knocking, the i gnit ion t imi ng for t hat cyli nder wi ll be retarded unt il t he knocking has s t opped.The ignit ion is t hen gradually advanced back t o t he normal t imi ng or unt il t he knocking re-occurs .
The ECM us es informat ion from the TCM t o provide t orque l imi tat ion during t rans mis s ion s hifts . The i gni ti on ti mi ng isadjus ted t o moment ari ly reduce t he engine t orque output t o give a smoot h t rans mis s ion shi ft and reduce l oad on thet ransmis s ion.
Air Conditioning (A/C) Compressor Control
The ECM controls t he operati on of the A/C compres s or and reacts t o reques ts from t he ATC module vi a t he high s peed CANbus. The compres s or is a variable di s pl acement unit and t he ECM controls , via a sol enoi d, t he dis placement of thecompres sor t o adjus t load during cert ain driving condit ions.
Duri ng engi ne s tart-up, movi ng from a s tandst il l and under hard accelerat ion, the ECM s et s t he mi nimum dis placement oft he compress or t o reduce the effect on t he engi ne t orque output. The ECM uses i nformati on from t he ATC module, t he A/Cpres s ure s ensor, the el ect ri c t hrott le TP s ens or and the ECT sens or to det ermi ne compres sor control . The ATC modulet ransmit s climate control and driver reques ts t o t he ECM and t he ECM det ermi nes the priori ty of thes e request s overengi ne performance.

ItemPart NumberDescription
1-Engine coolant inlet2-Engine coolant out let (hidden)
3-Trans mi ss ion coolant t rans mis s ion cooler
4-Trans mi ss ion fl ui d pipe - to trans mi ss i on5-Trans mi ss ion fl ui d pipe - from t rans mis s ion
6-Trans mi ss ion ai r blas t cool er
In hot cl imat e market s , the t rans mi ss ion fl ui d cool ing s ys tem uses the s ame cooler as t he s tandard cli mat e s ys t em, butwit h an addit ional air blas t cool er locat ed i n front the radiator and t he Air Conditioning (A/C) condens er.
The operati on of the flui d cool er is as des cribed for the s t andard climate cooler. The ai r blas t cooler compri s es 2 endt anks , int erconnected wi th hol low pl ates . The plat es al low trans mi s si on fl uid t o flow from one end t ank to the ot her, wi tht he air fl owing over the pl ates cooling the flui d as it pas s es through t he cooler.
The t ransmis s ion fluid out put from t he t rans mis s ion pump is s pli t bet ween t he s tandard cli mate cool er and t he air bl as tcool er. Some of t he transmis s ion fluid from t he t ransmis s ion pump i s divert ed i nt o the air bl as t cooler. The flui d fl owst hrough plates i n t he cool er and the ai r flow over t he plat es removes t he heat from t he fl ui d. The fl ui d i s then di rectedback to a tee connect ion wi th the flui d pipe t o t he s tandard cl imat e cool er and is then ret urned t o t he transmis s ion.

Publi s hed: 11-May-2011
Climate Control System - General Information - Air Conditioning (A/C)
System Recovery, Evacuation and Charging
General Procedures
1. W ARNING: Servicing mus t be carried out by pers onnelfamil liar wi th bot h vehicle s ys tem and the chargi ng and tes t ingequipment. Al l operat ions mus t be carried out i n a wel l vent ilat edarea away from open flame and heat s ources .
• NOTE: The receiver dri er need onl y be changed under t he followi ngcircums t ances : There i s dirt in t he refri gerant ci rcuit ( eg.compres s or s eizure ), t he s yst em is l eaking and refrigerant has beenl os t t o at mosphere, or t he refri gerant ci rcuit has been open moret han 24 hours , due to repair.
Refrigerant recovery and recycle.
1.
Remove t he acces s cover.2.
Remove t he dus t covers from the hi gh and low pres sureconnecti ons .3.
Connect t he high and l ow pres s ure l ines t o t he appropriat econnecti ons .4.
Open t he valves on t he connect ions .5.
Turn the valves on t he s tat ion t o t he correct pos it ions.6.
All ow t he s yst em t o recover the refrigerant from the sys tem.7.
Clos e t he valves on t he refri gerant st ati on.8.
Clos e t he valves on t he connecti ons .9.
Di sconnect t he high and l ow pres s ure connect ions.10.Inst all t he dus t covers t o t he connect ors .11.Evacuati on.12.

Publi s hed: 11-May-2011
Climate Control - Air Conditioning
Des cript ion and Operat ion
COMPONENT LOCATION
ItemPart NumberDescription1-High press ure li ne
2-High press ure servicing connecti on
3-Low pres s ure s ervi ci ng connect ion4-Thermos tat ic expans ion val ve
5-Evaporat or
6-Refrigerant pres s ure s ensor7-Receiver/Drier
8-Condens er
9-Air Condit ioning (A/C) compres s or10-Low pres s ure l ine
OVERVIEW
The A/C s ys t em t rans fers heat from t he cabi n to the out s ide at mosphere to provide t he heat er ass embly wit h dehumidifiedcool air.
The A/C s ys t em i s a s ealed clos ed l oop sys tem, fil led wi th a charge weight of R134a refri gerant as the heat transfermedium. The refrigerant charge weight for bot h i6 and TD4 vehi cl es is 730 g. O il is added t o t he refri gerant to l ubricat e the

The ATC module is mounted in t he cente r console a nd is int egra l wi th t he control panel . The modul e works in conjunct ion witht he ECM to control a ll as pect s of hea ting, ve ntil ation, and A/C. An 18-pin el ectrical connect or on the re ar of the moduleprovi des hardwired, Cont rolle r Area Network (CAN) bus a nd Loca l Interconne ct Network (LIN) bus conne ctions t o al lowi nteraction with A/C syst em components and other vehicle control modules.For a ddit iona l inf ormation, re fer to: Communicat ions Ne twork (418-00 Module Communi cati ons Net work, De scri ption andO peration).
Six different ATC module s (2 single zone , 4 dual zone) a re a vail able , de pending on vehicle spe cifica tion. Low s peci fica tionvehicles feat ure 3 rotary controll ers and 3 top hi nge d mome ntary switches t o control the qualit y, te mpe rature a nd dist ribut ionof ai r int o the ca bin. High specif icati on vehicles feat ure 3 rotary control lers, 6 top hinge d mome nta ry s witches, and 2 dualf unct ion moment ary swit che s to control the qua lity, tempera ture and di stribution of air into the cabin.
In additi on t o the A/C system, t he ATC module cont rols ope ration of:
The s eat hea tersThe rear window heat erThe winds hie ld he ate rThe e xterior mirror he ate rs.
For more informa tion, re fer t o the 'P rinci ples of O pe ration' s ection below.
COMPRESSOR SOLENOID VALVE
Ite mPart NumberDescription1-Compres sor sole noi d va lveThe compres sor sole noid val ve is int egra l wi th t he A/C compres sor. Ope rati on of the solenoid valve is cont rolle d by the ECMusing a P ulse W i dth Modulat ed (PW M) s igna l of diffe ring va lues . By controll ing the flow of refri gera nt (displace ment) t hrought he compress or, the sole noid va lve can cont rol e vaporat or opera ting temperature and cabin humidit y by va rying the pre ssurewithi n the A/C syste m.
• NO TE: The A/C compre ssor sol enoid va lve is fi tted to i6 petrol vehicle s only.
For a ddit iona l inf ormation, re fer to: Air Conditioning (412-01 Cli mat e Control, Description a nd O peration).
REFRIGERANT PRESSURE SENSOR