2006 LAND ROVER FRELANDER 2 Repair Manual

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Page 1129 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual Publi s hed: 11-May-2011
Engine Emission Control - I6 3.2L Petrol - Crankcase Vent Oil Separator
Removal and Inst all ati on
Removal
• NOTE: Removal s t eps in t his procedure may cont ain i nst

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LAND ROVER FRELANDER 2 2006 Repair Manual 5. NOTE: The gas ket is to be reus ed unl ess damaged.5.
Installation
To i nst all , revers e t he removal procedure.1.

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LAND ROVER FRELANDER 2 2006 Repair Manual Publi s hed: 11-May-2011
Engine Emission Control - TD4 2.2L Diesel -
Torque SpecificationsDescriptionNmlb-ft
Crankcas e vent oil s eparator97
Crankcas e vent oil s eparator, wiring harnes s brack

Page 1132 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual Publ is hed: 10-Jun-2011
Engine Emission Control - TD4 2.2L Diesel - Engine Emission Control
Des cript ion and Operat ion
COMPONENT LOCATION
ItemPart NumberDescription
1-Cams haft cover2-Posi ti ve cr

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LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-Exhaus t gas t rans fer t ube - showi ng fl ow direct ion2-Throt t le body
3-Intake mani fold
4-Exhaus t mani fold5-Coolant i nl et
6-Exhaus t gas reci rculati on (E

ItemPart NumberDescription
1-Exhaus t gas t rans fer t ube - showi ng fl ow direct ion2-Throt t le body
3-Intake mani fold
4-Exhaus t mani fold5-Coolant i nl et
6-Exhaus t gas reci rculati on (EGR) cooler
7-Coolant outl et8-Exhaus t gas reci rculati on (EGR) Val ve and Act uator
OVERVIEW
Crankcase Ventilation System
To prevent the bui ld-up of gas es in the engine's crankcase, t he crankcas e gas es are drawn int o t he oil s eparator where oi lpart icles are removed from the gas es . The oi l is t hen drai ned down to the engine's oi l pan and the gas es are di rected intot he engi ne's air i nt ake s ys t em.
Pri or to t he oil -free gas es entering t he air i ntake s yst em, a pos it ive crankcas e venti lat ion (PCV) val ve operat es t omi ni mi ze crankcase pres sure vari at ions caused by engi ne air demand and engi ne operati ng condi ti ons .
Exhaust Gas R ecirculation (EGR) System
Harmful nit rogen oxides (NO x) a cons ti tuent of the exhaust gas es, are formed by t he react ion between oxygen andnit rogen at high t emperat ures . Reducing t he engine's combust ion temperat ure and t herefore t he amount of NO x producedis achieved by reci rculati ng a proporti on of the exhaust gas es. The reci rculat ed exhaus t gas es repl ace some of the engine'sint ake air as t hi s reduces the oxygen cont ent wit hin t he cyl inders and lowers t he peak combus t ion t emperat ure by s everalhundred degrees.
To reduce t he temperature as well as i ncreas e t he densi ty of t he i nducted fuel charge, t he recircul ated exhaus t gas es arepass ed t hrough t he Exhaus t Gas Reci rculati on (EGR) cooler. The EGR cool er ut il izes cool ant from t he engi ne cool ing s yst emt o reduce the exhaust gas t emperat ure. Exhaus t gas es ent ering t he EGR cooler reach temperatures of approxi matel y 500C;t he EGR cool er lowers t he t emperature of t he gas es , to 250-300C before t hey exit t he cool er.
SYSTEM OPERATION
CRANKCASE VENT ILAT ION SYST EM OPERAT IO N
Crankcas e gas s es are drawn int o t he oil s eparator unit from the crankcase and the oil pan by a vacuum creat ed by aconnecti on int o t he air inducti on sys t em.
The crankcas e gas ses are circul at ed around t he oil s eparator and t hrough t he cams haft cover where t he gas and oil ares eparated. The gas is returned to the i nlet s ide of t he air inducti on s ys t em prior to the t urbocharger. The collected oi l isdrai ned down to the s ump.
EXHAUST GAS RECIR CULAT ION (EGR) SYST EM
An elect ricall y actuated val ve, mounted on the out let s ide of t he EGR cooler and cont rol led by t he ECM (engi ne cont rol

Page 1134 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual module), regulates t he amount of exhaus t gas es reci rculated into the ai r int ake s ys tem. The ECM uses s i gnals fromvarious engine s ens ors and calculates a res pons e bas ed on t he em

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LAND ROVER FRELANDER 2 2006 Repair Manual The crankcas e venti lati on oil s eparator i s als o connected to t he oil fil ler t ube, located at t he rear LH si de of the engine. Oi lfor repl enis hing t he s ys t em pas ses through t he o

Page 1136 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual Publi s hed: 11-May-2011
Engine Emission Control - TD4 2.2L Diesel - Engine Emission Control
Diagnosi s and Tes ti ng
Principles of Operation
For a detail ed descripti on of the engine emis s ion con

Publi s hed: 11-May-2011
Engine Emission Control - TD4 2.2L Diesel - Engine Emission Control
Diagnosi s and Tes ti ng
Principles of Operation
For a detail ed descripti on of the engine emis s ion control s ys tems , refer to the relevant Des cri pt ion and Operati on s ect ionin the workshop manual.REFER to: Engine Emi s si on Cont rol (303-08B Engine Emi ss i on Cont rol - TD4 2.2L Dies el, Des cript ion and Operat ion).
Inspection and Verification
CAUTION: Di agnos is by s ubs ti tut ion from a donor vehicle is NO T acceptabl e. Subs ti tut ion of cont rol modules doesnot guarant ee confirmat ion of a faul t, and may als o caus e addit ional fault s i n t he vehi cl e being t est ed and/or t he donorvehi cl e.
1. Verify t he cus t omer concern.1.
2. Vis ually ins pect for obvious s igns of mechani cal or electrical damage.2.
Visual InspectionMechanicalElectrical
EGR valveEGR pi pes /hos esVacuum s ys t emEngine breat her s ys tem
W i ring harnes sElect rical connect or(s)Fus es (s )
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 ep3.
4. If t he caus e is not vis ually evi dent , verify t he sympt om and refer t o t he Sympt om Chart, al ternat ively, check forDi agnos ti c Trouble Codes (DTCs) and refer t o t he DTC Index.4.
Symptom Chart
SymptomPossible CauseActionRough idl e, l ack of power under accel erati on,exces s ive fuel consumpt ion, exces s ive blacks moke
EGR valve s t uckCheck EGR valve for correct operati on.Check for relat ed DTCs and refer t o t he DTCIndex
Exces s ive engine bl ow-by/crankcas e press ureEngine breat her s ys temblocked/res trict edExces s ive engine wear
Check engine breat her s ys tem forbl ockage/res t ri ct ion. Check for exces si veengine wearREFER t o: Engi ne (303-00 Engi ne Sys t em -General Informati on, Di agnos is andTes t ing).
DTC Index
• NOTE: If the control modul e or a component i s s us pect and the vehicle remains under manufacturer warrant y, refer t o theW arranty Pol icy and Procedures manual (s ect ion B1.2), or determine i f any pri or approval programme is in operat ion, pri ort o the ins tall ati on of a new module/component.
• NOTE: Generic scan t ool s may not read the codes li st ed, or may read only fi ve digit codes . Mat ch the five di git s from t hes can tool to the firs t fi ve di git s of the seven digi t code l is ted to ident ify t he faul t (t he las t t wo digi ts gi ve addi ti onalinformat ion read by the manufact urer approved diagnos t ic s ys tem).
• 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 DTCs are recorded and, aft er performi ng the pi npoi nt tes ts , a fault is not present , an int ermi tt ent concern maybe t he caus e. Always check for loose connect ions and corroded terminals .
DT CDescriptionPossible CauseAction
P040500Exhaus t Gas Recirculat ionSensor A Circuit LowEGR Valve pos it ion s ensorvol tage below lower li mitCarry out t he pinpoint t est s as sociat ed wit hthis DTC usi ng t he manufacturer approveddi agnos ti c s yst emP040600Exhaus t Gas Recirculat ionSensor A Circuit Hi ghEGR Valve pos it ion s ensorvol tage above upper l imi tCarry out t he pinpoint t est s as sociat ed wit hthis DTC usi ng t he manufacturer approveddi agnos ti c s yst em
P042E00Exhaus t Gas Recirculat ionControl St uck OpenEGR Valve s tuck duri ng normalengi ne running - at tempt t ouns t ick valve unsucces s ful
Check/clear EGR valve fromobs t ructi on/s ti cking

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