climate control LAND ROVER FRELANDER 2 2006 User Guide

Publi s hed: 11-May-2011
Climate Control -
Torque SpecificationsDescriptionNmlb-ft
A/C compres sor refridgerant li ne connect ions2418
A/C condens er refridgerant li ne connecti ons107Compres s or lower s upport bracket - 3.2 Pet rol2518
Compressor upper support bracket - 3.2 Petrol:
M104533M82518
M6107
Compres s or mount ing bol ts - Al l engi nes25Condens er core bolt s107
Heater core and evaporat or core hous ing bol ts76
Heater housi ng t o bulkhead Torx bolt s76Pres s ure t rans ducer86
Thermos t at ic expansi on valve bolt s43
Thermos t at ic expansi on valve nut97

Publi s hed: 11-May-2011
Climate Control - Air Distribution and Filtering
Des cript ion and Operat ion
COMPONENT LOCATION
• NOTE: Right Hand Drive (RHD) shown, Left Hand Drive (LHD) si mil ar
ItemPart NumberDescription1-Pass enger face level/si de window regis ter
2-Side wi ndow vent
3-Face l evel duct4-Side wi ndow duct
5-W i nds hiel d duct
6-W i nds hiel d vent7-Side wi ndow vent
8-Dri ver face level/si de window regis ter
9-Dri ver footwell duct10-Ins t rument panel center regi st er
11-Cabi n air fil ter
12-Rear cabin Ri ght Hand (RH) duct13-Rear cabin Left Hand (LH) duct
14-Pass enger footwell duct
15-Ins t rument panel center regi st er

Publi s hed: 11-May-2011
Climate Control - Heating and Ventilation
Des cript ion and Operat ion
COMPONENT LOCATION
ItemPart NumberDescription1-Automat ic Temperat ure Cont rol (ATC) modul e
2-Right Hand (RH) vent il at ion out let
3-Left Hand (LH) vent il at ion out let4-Heater as s embl y
5-Blower mot or cont rol module
OVERVIEW
Two l evels of heat ing and venti lati on are avai lable. High s pecifi cat ion vehicles are fit ted wit h a dual zone aut omati cs ys t em, which can provide di fferent temperature s et t ings for t he LH and RH si des of the cabin. The dual zone s yst em mayals o be fit t ed wit h a pol luti on s ens or t o cont rol t he qual it y of air in the cabin.
Lower s pecifi cat ion vehicles are fit ted wit h a s ingle zone manual s yst em.
The heat er ass embl y for both sys t ems is ins tall ed on t he vehi cl e cent er li ne, bet ween the i nst rument panel and the enginebulkhead.
The ATC module cont rols operat ion of t he blower mot or vi a t he blower mot or control modul e, whi ch is mount ed on t hebulkhead si de of the heat er as s embly cas ing.For addi ti onal i nformat ion, refer to: (412-01 Cli mate Cont rol )

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

Publishe d: 11-May-2011
Climate Control - Control ComponentsDescripti on a nd O pe ration
COMPONENT LOCATION
ItemPart NumberDe scription1-Refrigera nt press ure sens or2-Cabin humidi ty s ensor (if fitt ed)3-Air Condi tioning (A/C) compressor (i6 shown)4-Engine Coola nt Temperat ure (ECT) s ensor5-Ambi ent air t emperat ure sensor6-Air intake ste ppe r motor

7-P ollution sensor (if fi tted)8-W indshie ld distri buti on (defrost) ste pper motor9-Right Hand (RH) tempera ture ble nd s tepper mot or10-Sunload s ens or11-Cabin temperature se nsor12-Automati c Te mpe rature Cont rol (ATC) modul e13-Evaporator te mpe rature s ens or14-Left Hand (LH) te mpe rature blend st eppe r motor15-Blowe r motor control module16-Face/feet dis tribution ste ppe r motor17-Blowe r motor
OVERVIEW
The clima te cont rol s yste m i ncorpora tes the hea ting, ve ntila tion and A/C systems. There are 2 mai n types of clima te controls yste m a vail able ;
a single z one ma nual sys tema dua l zone a utomati c system.
The clima te cont rol f unct ions for bot h systems a re controlle d by the ATC modul e. The ATC module is mounted in the ce nte rcons ole a nd cont ains bot h the syste m e lectronic sof twa re a nd user cont rols .
The ATC module works in conjunction wi th a number of othe r ve hicle control module s, i ncluding the Engine Control Module(ECM), which control s a number of cl ima te control sub-s yste ms on recei pt of reques ts f rom the ATC module .
The s ingle zone climate cont rol s yst em f eat ures ma nual control for air t empera ture , air dist ribution and air source, although as mal l amount of aut oma tic control does exis t in the ATC softwa re. In re sponse to s yste m i nput s, t he ATC module cont rols theopera tion of 3 st epper motors mounted on t he heat er as sembly. The st eppe r motors then a djust the positi on of the ai rt emperat ure, air dist ribution and air source flaps accordingly.
The dual zone cl imat e control system fe atures a utomati c control of air t empera ture , air dis tribution and blower motor s pee d.The ATC module is a lso able to cont rol i ndividua l te mpe rature re que sts for both the dri ver a nd pass enger s ide of the cabin.
• NO TE: The ATC module can only maint ain a maximum tempera ture dif fere nce bet wee n the 2 side s of the cabin of up toa pproximate ly 3ºC (4ºF). This is due to the moveme nt a nd mix of a ir wi thin the cabin.
The dual zone cl imat e control system fe atures 2 additional sens ors; a cabin temperature se nsor and a sunload sensor. Thecabin temperature se nsor provides a temperature fe edback to e nabl e the ATC module s oftware mai ntai n a cons tant ca bint emperat ure. The sunloa d se nsor provide s a rea ding of s ola r loa ding on the vehicle occupants a nd enables the ATC module toa djus t the output from t he clima te control s yste m a ccordingly.
Higher specif icat ion vers ions of t he dual zone cl imat e control system are al so a vailable . These syst ems fea ture 2 morea ddit iona l se nsors; a polluti on s ensor and a cabin humidity sensor.
The pollution sensor det ects pol luta nts ente ring the cabin, allowing the ATC modul e to rea ct by cha ngi ng t he posit ion of thea ir intake fla p. The cabin humidi ty s ensor ca lcul ates the probability of misti ng on the winds hiel d. The ATC module monitorst he s igna l from t he cabin humidi ty s ensor and a djus ts blowe r speed, air dis tribution and A/C compress or di spla cementa ccordingly.
Stop/Start Vehicles - From 2010 MY
To support the Stop/Start system, a number of changes have be en made to the logic and opera tion of climate cont rol s yst emwithi n a Stop/Sta rt cycle to:
maint ain occupant comfortpreve nt winds hie ld mistingconse rve batt ery power.
This has bee n achieved by the ATC (automa tic t emperat ure control) module monitoring and varying when nece ssary, va riousclima te control funct ions wit hin a St op/Start cycle.For a ddit iona l inf ormation, re fer to: Starting Sys tem (303-06C Start ing Syst em - TD4 2.2L Diese l, Vehicles Buil t From:01-03-2009, Des cript ion and Ope rati on).
To maint ain the cabi n te mpe rature when the engine is s hut down in a St op/Start cycle, an a uxil iary electric coolant-pump hasa lso bee n int egra ted into the cooling system to mai ntai n the coolant flow t hrough t he cabi n’s heat er core. The pump isdirectly hardwire d to the ECM. O n ve hicl es fi tted wit h a FFH (fue l fired heat er), the FFH coolant pump i s uti lize d and activa tedvia t he FFH.For a ddit iona l inf ormation, re fer to: Starting Sys tem (303-06C Start ing Syst em - TD4 2.2L Diese l, Vehicles Buil t From:01-03-2009, Des cript ion and Ope rati on).
• NO TE: From 2010 MY , the 'ECO N' s witch will be la bele d ‘A/C’ t o prevent confusion wit h the ‘Eco’ s witch which ope rate s the‘Stop/Sta rt’ a nd 'Gea r Change Indica tor' syst ems .
ATC MODULE

The pollution sensor allows the ATC module to monitor inta ke a ir for the level of carbon monoxide (CO ) and oxides of nitrogen(NOx). The s ensor is mounte d on the RH side of the hea ter casi ng.
• NO TE: The poll ution se nsor is an optional fit on ve hicl es with a dual z one , automatic climate control syst em.
The pollution sensor is provi ded an i gnit ion cont rolle d fe ed from the Ba ttery Junction Box (BJB) and provide s one of thef ollowing 4 s igna ls t o the ATC module based on ambient air qua lity:
Static or reduced poll ution le velsSmall increas e in poll ution le velsMedium incre ase in pollut ion leve lsRapid or l arge increas e in pol lution le vels .
Base d on the signal from the polluti on s ens or, t he ATC module is a ble t o control the intake air source to re duce the amount ofconta minant s entering the cabin. This functi on i s fully a utomati c, but ca n be overridden by manual sele ction of the air inta kes ource us ing the fres h/re circulat ed a ir switch on the control panel.
CONTROL DIAGRAM
• NO TE: A = Hardwired; D = High Speed CAN bus; N = Medium Spe ed CAN bus ; O = LIN bus

motor. A Hal l eff ect sens or l ocat ed withi n the st epper motor inf orms the ATC module that move me nt of the ste ppe r motor ist aking pl ace.
Air Temperature Control - Single Zone Manual System
Cabin tempe rature s election is made by turning the LH rota ry controller to t he required pos ition. Turning the controller counterclockwise wil l lower the tempera ture of t he air e xiting the heate r as sembly; turning the control ler clockwise wi ll rai se t het emperat ure of t he a ir exiting the he ate r as sembly.
Maxi mum he ating and cooling is represe nted on the control panel by a red a nd blue dot res pect ivel y. W hen eit her maximumheat ing or cooling is sele cte d, the 'comf ort' algorithm in the ATC modul e wi ll adopt a suitable s trat egy for air s ource, a irdistributi on a nd blower s pee d to ma inta in maximum hea ting or cool ing within t he cabin.
The ATC module adjusts the temperature of the air exit ing t he heat er a ssembly by moving the pos ition of the tempera tureblend door. The tempera ture ble nd door dire cts a proportion of cool ed a ir from t he evaporat or t hrough the heat er core toproduce the required temperature output. The ATC module a djusts t he posi tion of t he t empera ture blend door by provi dingLIN bus mes sage s to the ble nd door ste ppe r motor. A Hall e ffect se nsor located wit hin the stepper motor i nforms t he ATCmodule t hat moveme nt of the st epper motor is taking place .
Air Temperature Control - Dual Zone Automatic System
Dual zone systems f eature 2 rot ary heat ing cont rolle rs, which a llow indi vidual climate control for the LH and RH sides of thecabin. Te mpe rature s election can be ma de by turning the controller to t he requi red tempera ture ma rked on the control panel.Turni ng e ithe r controller pas t the 16°C (61°F) mark will initi ate the maximum cooling s trate gy; turning either controlle r pa stt he 28°C (82°F) mark wi ll initiat e the maximum hea ting stra tegy.
• NO TE: Maximum cooling or hea ting can only be achieved i f both rotary control lers are set to t he s ame position.
The ATC module is a ble to maint ain constant te mpe ratures in both side s of the cabin by monit oring the fee dba ck f rom thecabin temperature se nsor. Unles s any manual overri des have be en s ele cted, the ATC module will a utomati cally control thei ntake ai r source , air dis tribution int o the ca bin and blower spee d to ma inta in t he requi red tempera ture s.
Dual zone systems f eature 2 temperature bl end doors, a llowing individual t emperat ure output for t he LH a nd RH si des of t hecabin.
• NO TE: The drivers side temperature se tting ha s priorit y over t he pass engers s ide tempera ture se tting.
The t empera ture ble nd doors are mounte d on the LH side of the hea ter ass embly a nd direct a proportion of cooled air fromt he e vaporat or through t he heat er core t o provide the re quired t empera ture out puts . The ATC module controls the posi tion oft he t emperat ure blend doors by providing LIN bus mess ages to the blend door stepper mot ors. Hal l eff ect sens ors loca tedwithi n the st epper motors inform the ATC modul e that move ment of the ste ppe r motors is taki ng place .
Blower Motor Control - Single Zone Manual System
Blower motor spe ed is se t by turning the RH rot ary cont rolle r to the require d position. The RH rotary controller allows t hes election of 14 blowe r motor spe eds . Turning the controller fully counte r clockwise will turn the blower mot or off.
O peration of the blower mot or is control led by t he ATC module via t he blower motor control module . The ATC module provi desa PW M s igna l to the blower mot or control modul e ba sed on the sele cted blower spe ed. The blower mot or control modulei nterpret s the PW M s igna l as a blower motor spe ed and controls the vol tage to the blower mot or a ccordingly.
Blower Motor Control - Dual Zone Automatic System
Blower motor spe ed is controlled automa tica lly by the ATC module unle ss a ma nual override ha s be en requeste d. Manualoverrides to blower motor speed can be made by turning the centra l rot ary cont rolle r to the require d position. The rota rycontrolle r all ows the manual sele ction of 7 blower motor spe eds . Turning the controller fully counte r clockwise will turn theblower motor off . W hen a manua l override has been ma de, the 'AUTO' LED loca ted in the ce nte r of the rota ry controlle r wil le xtinguis h.
• NO TE: The central rota ry controller contains 2 LED's. The t op (round) LED will illumina te when the blower motor i s undera utomati c control. The bottom (recta ngular) LED wil l illuminated when a ir distri bution i nto the cabi n is under a utomati ccontrol (s ee below).
The blower motor ca n be ret urne d to aut oma tic cont rol by press ing the 'AUTO' s witch locate d in the center of t he rotarycontrolle r. Under aut oma tic cont rol, the ATC module varies t he s pee d of the blower motor i n line with i ts 'comf ort' algorithmt o maint ain t he required cabin te mperat ure. The ATC modul e wi ll al so vary the blower motor speed to compens ate for the rame ffect on inta ke air produced by forward moveme nt of the ve hicl e.
O peration of the blower mot or is control led by t he ATC module via t he blower motor control module . The ATC module provi desa PW M s igna l to the blower mot or control modul e ba sed on the required blower spe ed. The blower mot or control modulei nterpret s the PW M s igna l as a blower motor spe ed and controls the vol tage to the blower mot or a ccordingly.
Air Distribution Control - Single Zone Manual System
Air distri buti on into t he cabi n ca n be adj uste d by turning the ce ntra l rot ary cont rolle r to the require d positi on. The ATC modulea djus ts t he posit ion of t he a ir di stribution door to the re qui red posi tion by providing LIN bus messa ges to the air distribut iondoor stepper motor. A Ha ll e ffect se nsor loca ted wit hin the stepper mot or informs t he ATC module that movement of t hes tepper motor is taking place.
Air Distribution Control - Dual Zone Automatic System
Air distri buti on into t he cabi n is cont rolle d a utomati cally by the ATC module unless any ma nual ove rrides have bee nreque ste d. Manual overri des can be made by pre ssing the a ppropria te a ir di stribution mome nta ry s witch on the control panel.If a manual override has bee n re que sted, the 'AUTO ' LED locate d in the center of the blowe r motor rota ry controlle r wi lle xtinguis h.
• NO TE: The central rota ry controller contains 2 LED's. The t op (round) LED will illumina te when the blower motor i s undera utomati c control (se e a bove ). The bott om (rect angular) LED wi ll ill uminate d when air distribut ion into the cabin is under

Publi s hed: 11-May-2011
Climate Control - Blower MotorLHD AWD
Removal and Inst all ati on
Special T ool(s)
412-140Remover/Ins t al ler, Bl ower Motor
Removal
1. NOTE: The recircul at ion bl end door mus t be cl os ed i n order for t heremoval of the recirculat ion bl end door housi ng.
Acti vat e reci rculati on.
1.
Di sconnect t he bat t ery ground cable.
Refer t o: Specificati ons (414-00 Bat tery and Charging Sys tem -General Informat ion, Specificati ons).
2.
Remove t he accelerat or pedal as sembl y.
Refer t o: Accelerat or Pedal (310-02 Accelerati on Cont rol , Removaland Inst all at ion).
3.
4.
Remove t he glove compartment .
Refer t o: Glove Compart ment (501-12 Ins trument Panel and
5.

Publi s hed: 11-May-2011
Climate Control - Blower MotorRHD AWD
Removal and Inst all ati on
Special T ool(s)
412-140Remover/Ins t al ler, Bl ower Motor
Removal
All vehicles
1. NOTE: The recircul at ion bl end door mus t be cl os ed i n order for t heremoval of the recirculat ion bl end door housi ng.
Acti vat e reci rculati on.
1.
Di sconnect t he bat t ery ground cable.
Refer t o: Specificati ons (414-00 Bat tery and Charging Sys tem -General Informat ion, Specificati ons).
2.
Vehicles with manual transmission
Remove t he cl utch pedal as s embly.
Refer t o: Clutch Pedal - RHD AW D (308-02 Clut ch Cont rol s, Removaland Inst all at ion).
3.
All vehicles
4.
Remove t he glove compartment .
Refer t o: Glove Compart ment (501-12 Ins trument Panel andConsol e, Removal and Ins t al lat ion).
5.