2006 LAND ROVER FRELANDER 2 ECU

Repeat t he above procedure for t he other s ide.
6.
Installation
1. CAUTION: Make s ure that the mati ng faces are cl ean and
free of foreign mat eri al.
Inst all t he brake dis c.
T orque: 35 Nm 1.
2. CAUTIONS: Make s ure that t he mat ing faces are clean and free of foreign
mat eri al . Make s ure that t he brake hos e is not t wis t ed and is correctl y
l ocated.
Secure t he brake caliper and anchor plat e t o t he wheel knuckl e.
T orque: 110 Nm 2.
Repeat t he above procedure for t he other s ide.
3.
Adjus t t he parking brake.
Refer t o: Parking Brake Cabl e Adjus tment (206-05 Parking Brake and
Actuat ion, General Procedures ).
4.
Inst all t he wheel s and t ires .
5.
If neces sary, carry out t he parking brake s hoe bedding-i n procedure.
Refer t o: Parking Brake Shoes Bedding-In (206-05 Parking Brake and
Actuat ion, General Procedures ).
6.

5-Brake shoe retai ni ng s pri ng
6-Brake shoe return s pri ng
7-Brake shoe mechanical adjust er8-Lower (l eadi ng) brake s hoe
9-Parki ng brake l ever cabl e
10-Parki ng brake cabl e equalizer11-Parki ng brake i nner cabl e
12-Equali zer fas t ener
13-Parki ng brake mi cros wit ch14-Parki ng brake l ever as sembl y
15-Parki ng brake outer cable
16-Brake dus t s hield
OVERVIEW
The parking brake is a manual ly actuat ed s ys t em t hat operat es brake s hoes located i n t he rear brake di scs . The ins idecent er of the rear brake dis c is manufact ured t o form the brake drum.
BRAKE SHOE ASSEMBLY
The brake s hoes are mount ed horizontal ly on an int egral brake dus t s hield and backplat e, and form an upper t rai li ng andlower l eading brake s hoe type s yst em. Retai ni ng pins pas s t hrough hol es in the dus t s hield and corres ponding hol es ineach brake s hoe bracket . Each pi n is secured t o t he brake s hoe wit h a ret ai ning cli p. The ret ai ning pins al low movement oft he brake s hoe toward the drum surface duri ng parking brake operat ion, but prevent si deways movement of the brake shoeaway from the dus t s hi eld.
An expander unit and manual adjust er are l ocat ed along t he hori zont al axis of t he dus t shi el d. The expander uni t isposi ti oned at the front of the dus t s hield and forms t he locati on for t he leading and t rai ling ends of t he brake s hoebracket s . The manual adjus t er i s mounted at t he rear of t he dust s hiel d and forms t he l ocati on and ful crum poi nt for theoppos it e ends of t he brake s hoe bracket s.
The manual adjus t er provides the means to adjust t he brake s hoe l ining t o drum clearance for maintenance purposes .Acces s t o t he manual adjus t er knurl ed wheel i s t hrough a formed hole in the front of the brake dis c. Adjust ment isrequired if t he brake s hoes or dis cs are renewed. A bedding-in procedure must al so be performed t o make s ure the drumbrakes operate sat is fact oril y.For addit ional informat ion, refer t o: Parking Brake Shoes Bedding-In (206-05 Parking Brake and Actuati on, GeneralProcedures).
The corres pondi ng ends of bot h t he upper and l ower brake shoe brackets are mai ntained i n contact wit h t he expander uni tand manual adjus t er by 2 ret urn springs . The return s pri ngs are l ocat ed bet ween t he ends of each upper and l ower brakes hoe and att ach to hol es formed in the brake shoe brackets . The ret urn springs pull t he brake s hoes away from t he drumwhen t he parking brake is released.
PARKING BRAKE LEVER
The parking brake lever is l ocat ed in t he floor cons ole bet ween the driver and pass enger s eats , and compri ses a toot hedquadrant , pawl and pres s-butt on rel eas e mechanis m. A si ngl e cabl e wi th a formed t hreaded rod-end connect s t he quadrantt o the equali zer unit , and is secured wit h eit her a locknut or a l ocking was her and nut.
The t hreaded rod all ows adjus tment s t o t he parking brake cable tens ion and parki ng brake lever travel t o be performed formaint enance purpos es.For addit ional informat ion, refer t o: Parking Brake Cabl e Adjus tment (206-05 Parki ng Brake and Actuat ion, GeneralProcedures).
The parking brake cable is routed from t he parking brake l ever equalizer, and al ong the chas si s t o t he rear parking brakeexpander uni t. The parki ng brake cabl e prot rudes t hrough t he brake dust s hiel d, and is formed wit h a nippl e that connectst o the expander unit . The oppos i te ends of each Left-Hand (LH) and Ri ght -Hand (RH) parking brake cabl e are formed wit h anipple that connect to the equali zer unit . The equal izer uni t makes sure t he LH and RH parki ng brake as s embl ies operat es imul taneous l y when the parking brake i s applied.
A micros wit ch is locat ed on t he base of the parki ng brake lever. The micros wit ch operates t he parking brake warni ngindicat or l amp l ocat ed in t he i ns t rument clus ter, when the parki ng brake i s appl ied.For addit ional informat ion, refer t o: Ins t rument Clus ter (413-01 Inst rument Cl us t er, Des cript ion and Operat ion).
PRINCIPLES OF OPERATION
As t he parking brake lever i s applied, t he toot hed quadrant rotat es and pul ls on the t hreaded rod and cable equali zer. Theequal izer pul ls t he 2 parki ng brake cables and operat es the 2 expander uni ts s i mult aneous ly. Movement of t he expanderunit caus es t he upper and l ower brake s hoes t o pivot agains t the manual adjus ter fulcrum, and t he brake s hoes cont actt he brake drum agai nst t he t ens i on of the 2 ret urn s pri ngs .
As t he parking brake lever quadrant rot ates , t he teet h on t he pawl engage wit h corresponding t eeth on the quadrant . Int he appl ied pos it ion, the pawl t eet h are held under spring t ensi on agai nst the quadrant teet h t o prevent the l ever fromdis engagi ng.
W i th the parki ng brake appli ed and the i gnit ion i n power mode 6 (ignit ion), t he mi cros wit ch connect s a ground to theins t rument clus ter and il lumi nat es t he parking brake warning i ndi cat or lamp.For addit ional informat ion, refer t o: Ins t rument Clus ter (413-01 Inst rument Cl us t er, Des cript ion and Operat ion).
W hen t he parking brake lever pres s-butt on is pres sed and t he l ever moved t o rel eas e t he parki ng brake, t he pawl teet hare rais ed clear from the quadrant t eet h. As the parki ng brake l ever i s lowered, t he parking brake cable cl oses t heexpander uni t and the brake s hoes are immediatel y moved away from the brake drum by the 2 ret urn s pri ngs .

1-Vacuum pi pe - i 6 engi ne
2-Vacuum pump - i6 engi ne
3-Vacuum pi pe - TD4 engine (up t o 2010 MY )4-Vacuum pump - TD4 engine
5-Check valve
6-Brake boost er
OVERVIEW
Power as s is t ance for the braki ng s ys t em i s provided by a vacuum operat ed, non-act ive brake boos ter.
The brake boost er is a compact unit t hat occupi es les s s pace than a convent ional brake boos t er, improving t he vehi cl escras h performance charact eri st ics . The uni t is ins tall ed wi th t andem diaphragms that are 203.20 mm (8.00 in) and 228.60mm (9.00 in) i n diamet er and operate as a s ingle uni t.
The unit i s located on t he driver's si de of the engine compartment , and is s ealed t o t he bulkhead wit h a gas ket ands ecured wit h 4 s t uds and locki ng nuts . The brake boost er act uati ng pus h rod i s att ached t o t he brake pedal wit h a clevispin. The boost er out put rod l ocat es in the primary pis ton of t he brake mast er cyl inder.For addit ional informat ion, refer t o: Hydraulic Brake Actuati on (206-06 Hydraulic Brake Act uati on, Des cri pt ion andOperat ion).
VACUUM COMPONENTS
For bot h t he i6 gas oli ne and TD4 dies el engi nes , t he vacuum requi red for brake booster operati on is creat ed by a vacuumpump mount ed at the rear of t he cylinder head. The vacuum pump i s dri ven by the i ntake cams haft.
A rigi d plas ti c pipe connect s the vacuum pump t o a check valve ins t al led on the front chamber of t he brake boost er. Thepipe l engt h and rout ing is different for LHD and RHD model s.
The check valve mai ntains the vacuum neces s ary for brake boos t er operat ion and prevent s air from ent eri ng the frontchamber.
Stop/Start Vehicles - From 2010 MY
Stop/St art Vehicl e Component s
ItemPart NumberDescription
1-Brake vacuum sens or
Brake vacuum s ens or

11.
CAUTIONS: Be prepared t o collect es caping flui ds .
Make s ure that all openings are sealed.
11.
All vehicles 12.
CAUTIONS: Be prepared t o collect es caping flui ds .
Make s ure that all openings are sealed.
12.
Installation All vehicles
Inst all t he ABS module.
T orque: 10 Nm 1.
Inst all t he brake fluid tubes.
T orque: 15 Nm 2.
Inst all t he bat t ery t ray s upport .
T orque: M6 10 Nm M8
25 Nm 3.
Left-hand drive vehicles Connect t he brake boost er vacuum l ine.
4.
All vehicles Inst all t he ECM.
5.
Secure t he vacuum line and harnes s .
6.
Left-hand drive vehicles

For addit ional informat ion, refer t o:
Ins trument Clus ter (413-01 Ins t rument Clus t er, Descripti on and Operat ion),Informat ion and Mes s age Cent er (413-08 Informati on and Mes sage Cent er, Descripti on and Operat ion).
As t he wheel s peed s ens ors are acti ve devi ces , a return s ignal is availabl e when t he road wheels are not rot ati ng. Thisenabl es the ABS modul e t o check t he condi ti on of the s peed s ens ors whil e the vehicl e is st ati onary.
SENSOR CLUSTER
ItemPart NumberDescription
1-Sens or clus ter
2-Retaini ng s tud and nut (2 off)3-Electrical connect or
The s ens or clus ter is ins tal led beneat h t he cent er cons ole and i s s ecured to the t rans mi ss i on tunnel wit h 2 s t uds and nut s .The s ens or clus ter is a compact unit t hat provides t he ABS module wi th inputs of yaw rate, roll rat e, longit udi nal andlat eral accelerat ion. The ABS module broadcas ts the i nput values on the hi gh speed CAN bus for use by other s ys t ems .
W hen t he i gni ti on is i n power mode 6 (ignit ion), the s ens or cl us t er recei ves an ignit ion power feed from t he ABS module.The s ens or clus ter is als o connected t o t he ABS module via a privat e CAN bus .
The s ens or clus ter is diagnos ed by t he ABS module. If a s ensor faul t is det ect ed t he ABS module s t ores a relat ed DTC inmemory and il lumi nat es t he appropriat e warni ng indicator l amps, dependi ng on t he s yst em funct ions affect ed (DSC/ETC,ABS, EBA/EBD, HDC). A warning chime is al s o s ounded t o alert the driver to the fault condi ti on.
For vehicles ins tall ed wit h a high-l ine i ns t rument clus ter, a mes s age is di spl ayed in t he mes sage center, onl y if t he faul taffect s t he HDC funct ion.

25-Sol enoi d-operated inlet valve (LH rear brake)
26-Sol enoi d-operated inlet valve (RH front brake)
The HCU features 3 operati ng modes:
Normal braki ng/ EBDABS brakingActi ve braking.
Normal Braking/EBD Mod e
Ini ti ally, all of t he s olenoi d-operat ed val ves are de-energi zed. Operat ing the brake pedal produces a corres pondi ngincreas e or decreas e of press ure in t he brakes , through t he open pil ot val ves and i nlet valves. If t he ABS moduledetermines t hat EBD is necess ary, i t energi zes the i nlet valves for both the rear brakes , t o i sol at e t he brakes from anyfurther increas e i n hydraulic press ure.
• NOTE: Only the rear brakes are control led by the EBD funct ion.
ABS Braking Mode
If the ABS modul e determines t hat ABS braking i s neces sary, it energizes t he inl et and out let valves of the relat ed brakeand s tarts t he hydrauli c ret urn pump. The i nl et val ve cl oses to i s ol ate the brake from pres s uri zed flui d; the out let valveopens to releas e pres s ure from the brake int o t he accumulat or, and t he ret urn pump ci rcuit . The reduced hydraul ic pres s ureall ows the wheel t o accelerate. The ABS module then operat es the i nlet and outl et val ves t o modul at e t he pres s ure i n t hebrake t o apply t he maximum braking effort wit hout locki ng the wheel . Cont rol of the val ves for each wheel takes placeindivi dual ly.
Active Braking Mode
The act ive braki ng mode i s us ed to generat e and control hydrauli c pres s ure t o t he brakes for funct ions other t han Normaland ABS braking, for example RSC, DSC, EBA, ETC, HDC.
For act ive braking, t he ABS module energi zes the pi lot valves and pri ming valves , start s t he ret urn pump and energizes allof the inlet valves. Brake fl uid, drawn from t he res ervoir t hrough the mast er cyl inder and priming valve, is press uri zed byt he ret urn pump and suppli ed to the i nlet valves. The ABS modul e t hen operat es t he inl et valves and out let val ves , asrequired, to modul at e t he pres s ure i n t he indivi dual brakes . Some noi s e may be generat ed during act ive braki ng.
Service Information
The ABS module compris es an HCU and an Elect roni c Cont rol Unit (ECU) t hat mus t not be s eparated. The ABS module andHCU as s embly i s s uppl ied as a si ngl e component and arrives i n a pre-fill ed s tat e.
• NOTE: The ABS module, HCU and the s ens or clus t er are fragil e components and mus t be dis carded if dropped ordamaged.
CONTROL DIAGRAM
• NOTE: A = Hardwi red; D = Hi gh Speed CAN bus ; N = Medi um Speed CAN bus ; U = Pri vat e CAN bus

Publi s hed: 11-May-2011
Steering System - General Information - Steering System
Diagnosi s and Tes ti ng
Principle of Operation
For a detail ed descripti on of the st eering sys tem, refer t o t he rel evant Des cript ion and Operat ion s ecti on in the works hopmanual. REFER to:
Steeri ng Sys t em (211-00 St eering Sys tem - General Informat ion, Diagnos i s and Test ing),Power St eering (211-02 Power Steeri ng, Des cri pti on and Operati on),Steeri ng Linkage (211-03 St eering Li nkage, Descripti on and Operat ion),Steeri ng Column (211-04 St eering Col umn, Des cri pti on and Operati on).
Inspection and Verification
1. Verify t he cus t omer concern by operat ing t he s yst em.1.
2. Vis ually ins pect for obvious s igns of damage and s ys t em i ntegri ty.2.
Visual Inspection
MechanicalCheck the t ires for correct press ure, s ize and t read pat ternCheck for wheel rim and t ire damageCheck road wheel securi tyCheck the power s teeri ng fluid level and t he hydraulic ci rcuit for flui d leaksCheck the power s teeri ng pump drive belt condi ti on and t ens ionCheck the power s teeri ng pump for securi ty, wear, damage and exces s ive nois eCheck the s t eering gear as sembl y for damage, wear and s ecurit yCheck the hydrauli c pipes and cool er li nes for damage and correct rout ingCheck the s t eering joint s for damage, excess i ve play, wear and s ecurit yCheck the s t eering column and joi nt s for damage, exces s ive play, wear and securi ty
3. If an obvious cause for an obs erved or report ed concern is found, correct t he caus e (if pos s ible) beforeproceeding t o t he next s t ep.3.
4. If t he concern is not vis uall y evi dent , verify t he s ymptom and refer t o t he Symptom Chart .4.
Symptom Chart
• NOTE: If a component is sus pect and t he vehicle remains under the manufact urer warrant y, refer t o t he W arrant y Policyand Procedures manual (s ect ion B1.2), or determine i f any prior approval programme is i n operat ion, prior t o t heins t al lat ion of a new component.
SymptomPossible CauseAction
St eering wandersExces s ive free pl ay in t hes teering s yst emSt eering geometryi ncorrect ly al igned
Check for excess i ve movement or play i n t he s teeri ng s yst em wit hthe engine running. Check for pl ay at several different s t eeringpos i ti ons . Carry out st eeri ng geomet ry and alignment checks .REFER t o: Four-W heel Al ignment (204-00 Sus pens i on Sys t em -General Informati on, General Procedures ).St eering pull s t o t hel eft or ri ghtSt eering/s us pens ioncomponent s damaged,bent, l oos eSt eering geometryi ncorrect ly al igned
Check s t eering and s us pens ion component s for damage/correctins tal lati on. Carry out s t eering geometry and ali gnment checks .REFER t o: Four-W heel Al ignment (204-00 Sus pens i on Sys t em -General Informati on, General Procedures ).
St eering feel snotchy when t urningfrom lock to lock
St eering or s uspens ions wivel joi nt s s eizedSt eering t ie rod end jointsor t rack rod i nner joint ss eizedSt eering column orunivers al joi nt s s eizedSt eering gear int ernalcomponent s mi sal igned,worn or damaged
Dis connect the s t eering gear from the s us pens ion. Check forfreedom of movement i n t he s us pensi on. Di s connect t he s teeringcol umn from the s t eering gear. Check t he st eeri ng col umn anduni vers al joint s for freedom of movement. Check the s t eeringgear for freedom of movement . Rect ify as neces s ary.
St eering feel s t ightand does nots elf-center
Power st eeri nghydrauli cs noi syoperat ion
Power st eeri ng fl uid l evell ow or cont aminatedPower st eeri ng fl uidaerat edPower st eeri ng hos est wis t ed or res tricted
Check and t op-up t he power st eering fl ui d l evel if requi red.REFER t o: Power St eeri ng Sys t em Bl eeding (211-00 St eeringSys t em - General Informat ion, General Procedures ).Check for contaminated flui d. Check for air i ngres s int o t hesys t em. Check t he power s t eering hos es for t wis t ing orres trict ions. Recti fy as neces sary.
Power st eeri ng pumpnois yPower st eeri ng fl uid l evell ow or cont aminatedPump i nternal component sworn or damaged
Check and t op-up t he power st eering fl ui d l evel if requi red.REFER t o: Power St eeri ng Sys t em Bl eeding (211-00 St eeringSys t em - General Informat ion, General Procedures ).Check for contaminated flui d. Check for exces s ive pump noi se.Ins tal l a new pump as required. Refer t o t he new componentins tal lati on note at t he t op of the Sympt om Chart

5. CAUTION: Be prepared to col lect escaping fluids .
• NOTE: Make s ure the ext ended pipe is not kinked or twi s tedand i s correctl y s ecured wit h hos e clips .
At t ach a s ui table pipe t o t he power s t eering return hos e toal low the flui d to drain.
6. NOTE: The s ui table funnel should have t he a capaci ty of 4l it res and O-ri ng s eal
• NOTE: The s uit abl e funnel mus t be t ightl y s eal ed t o thepower st eeri ng fl uid reservoi r to avoid fl uid l eakage.
Ins tal l a s ui table funnel ont o t he power s t eering flui dres ervoir.
7. W ARNING: Do not work on or under a vehi cl e s upportedonl y by a jack. Al ways support t he vehi cl e on s afet y s tands .
Rais e and s upport t he vehi cl e wi th the wheels jus t cl ear of t heground.
8. CAUTIONS:
Steps 8 and 9 mus t be carried out wit hin 2 - 3 s econds ofeach ot her. Failure t o fol low this ins truct ion may res ult i ndamage to the power s teeri ng s yst em.
Be prepared to col lect es caping fluids .
Us ing the s uit able funnel , top up t he power s teeri ng s ys t emwi th the s peci fi ed fl uid. Make s ure t he fluid level i s mai nt ainedat t wo t hirds full i n t he funnel.