2006 LAND ROVER FRELANDER 2 climate control

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.

Publi s hed: 11-May-2011
Climate Control - Blower Motor Resistor
Removal and Inst all ati on
Removal
1.
2.

Publi s hed: 11-May-2011
Climate Control - Footwell Vent/Duct Blend Door ActuatorLHD AWD
Removal and Inst all ati on
Removal
• NOTE: Removal s t eps in t his procedure may cont ain i nst all ati on det ail s.
Make t he SRS s ys t em s afe.
Refer t o: Standard W orks hop Pract ices (100-00 General Informat ion,
Des cript ion and Operat ion).
1.
Remove t he s teeri ng col umn.
Refer t o: Steeri ng Column (211-04 St eering Col umn, Removal and
Inst all at ion).
2. Remove t he dri ver l ower ai r bag modul e s upport
bracket.
T orque: 7 Nm 3.
4.
Installation To i nst all , revers e t he removal procedure.
1.
If a new component has been ins t al led, configure usi ng Land Rover
approved diagnos t ic equipment .
2.

Publi s hed: 11-May-2011
Climate Control - Footwell Vent/Duct Blend Door ActuatorRHD AWD
Removal and Inst all ati on
Removal
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).
1.
2.
Installation
To i nst all , revers e t he removal procedure.1.
If a new component has been ins t al led, configure usi ng Land Roverapproved diagnos t ic equipment .2.

Publi s hed: 11-May-2011
Climate Control - Climate Control Assembly
Removal and Inst all ati on
Removal
Remove t he ins trument panel cons ole.
Refer t o: Ins trument Panel Consol e (501-12 Ins t rument Panel andConsol e, Removal and Ins t al lat ion).
1.
Remove t he cl imat e control as s embly.2.
Installation
Inst all is the revers e of removal.1.