
Publ is hed: 27-Apr-2011
General Information - Diagnostic Trouble Code (DTC) IndexDTC: Rear
Differential Control Module (RDCM)
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 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 .
Des cript ion And Operat ion
For a detail ed descripti on of the rear different ial sys t em, refer t o t he rel evant Des cript ion and Operat ion s ecti on in theworks hop manual .For addit ional informat ion, refer t o: Rear Drive Axl e and Different ial (205-02 Rear Drive Axl e/Different ial , Des cri pti on andOperat ion).
DT CDescriptionPossible CauseActionP0560-17Syst em Vol tage - circui tvolt age above t hres hol dDi fferenti al El ect ronicModule (DEM) s uppl ycircui t vol tage abovet hres hol d
Check vehi cl e batt ery and chargi ng s ys t em,repai r as required. Refer to the relevants ecti on in the workshop manual. Refer t o t heel ect ri cal circui t diagrams and check thepower and ground s uppl y circui ts t o t heDi fferenti al El ect roni c Modul e (DEM). Cleart he DTC and re-t es t.
P0602-54Powert rain Cont rol ModuleProgramming Error - mi s si ngcal ibrat ion
Di fferenti al El ect ronicModule (DEM)programming errorDi fferenti al El ect ronicModule (DEM) i nt ernalfailure
Us i ng the manufact urer approved diagnos t ics ys tem check and i ns t all lat est l evel ofs oftware to the Different ial Elect roni c Modul e(DEM). Cl ear the DTC and re-t es t.Check and ins t al l a new Di fferenti alEl ect ronic Modul e (DEM) as required. Refer t ot he W arrant y Policy and Procedures manual,or det ermi ne if any pri or approval programmei s i n operati on, prior t o the ins tall ati on of anew modul e/component .
P0607-49Control Module Performance- int ernal electroni c fai lureDi fferenti al El ect ronicModule (DEM) i nt ernalfailure
Cl ear t he DTC and re-t es t. Check and ins talla new Different ial Elect ronic Module (DEM) asrequi red. Refer t o t he W arranty Pol icy andProcedures manual, or determine if any pri orapproval programme is in operat ion, pri or t ot he i ns t allat ion of a new module/component .
P0666-11PCM / ECM / TCM InternalTemperature Sensor Ci rcuit -circuit short to ground
Di fferenti al El ect ronicModule (DEM) i nt ernalfailure
Cl ear t he DTC and re-t es t. Check and ins talla new Different ial Elect ronic Module (DEM) asrequi red. Refer t o t he W arranty Pol icy andProcedures manual, or determine if any pri orapproval programme is in operat ion, pri or t ot he i ns t allat ion of a new module/component .
P0666-15PCM / ECM / TCM InternalTemperature Sensor Ci rcuit -circuit short to bat tery oropen
Di fferenti al El ect ronicModule (DEM) i nt ernalfailure
Cl ear t he DTC and re-t es t. Check and ins talla new Different ial Elect ronic Module (DEM) asrequi red. Refer t o t he W arranty Pol icy andProcedures manual, or determine if any pri orapproval programme is in operat ion, pri or t ot he i ns t allat ion of a new module/component .
P0667-27PCM / ECM / TCM InternalTemperature SensorRange/Performance - s ignalrat e of change abovet hreshol d - s ignal rate ofchange above threshold
Di fferenti al El ect ronicModule (DEM) i nt ernalfailure
Cl ear t he DTC and re-t es t. Check and ins talla new Different ial Elect ronic Module (DEM) asrequi red. Refer t o t he W arranty Pol icy andProcedures manual, or determine if any pri orapproval programme is in operat ion, pri or t ot he i ns t allat ion of a new module/component .
P0748-14Pres s ure Control Sol enoi d AElectrical - ci rcuit s hort t oground or open
Di fferenti al El ect ronicModule (DEM) i nt ernalfailure
Cl ear t he DTC and re-t es t. Check and ins talla new Different ial Elect ronic Module (DEM) asrequi red. Refer t o t he W arranty Pol icy andProcedures manual, or determine if any pri orapproval programme is in operat ion, pri or t o

The Manual Trans mi ss i on Serial Number is st amped on t he transmis s ion casi ng.
Rear Differential Serial Number
The Rear Different ial Serial Number is s t amped on t he s ide of t he different ial cas ing.
Power transfer unit

Check t hat the flui d level is t o t he mi d-way mark between the MAX and MIN marks on t he fluid res ervoir, t op-up i fneces s ary.Clean t he area around the res ervoi r fi ll er cap, remove cap.
CAUTION: Do not fill reservoir above the MAX mark.
If necess ary, t op-up us ing t he recommended fluid to the mid-way mark on the reservoir.For addit ional informat ion, refer t o: Specificati ons (211-02 Power St eering, Specificati ons).Ins t all the res ervoir fill er cap.
Windshield Washer Reservoir
Remove the winds hi eld was her res ervoir fill er cap.Top-up t he res ervoir us ing a mi xt ure of an approved wi nds hiel d was her flui d and water unti l the level i s t o thebott om of t he gauze fil ter i n t he res ervoir fil ler neck.Ins t all the res ervoir fill er cap.
Engine Oil and Filter
CAUTION: For vehi cl es operati ng under arduous condi ti ons s ee relevant s ecti on.
Every 6 months or 7,500 miles (12,000 km): NAS and Gulf markets Renew engi ne oil and filt er.For addit ional informat ion, refer t o: Specificati ons (303-01A Engine - I6 3.2L Petrol, Speci fi cat ions).
Air Filtering
CAUTION: For vehi cl es operati ng under arduous condi ti ons s ee relevant s ecti on.
1. Every 2 years or 30,000 miles (48,000 km): Replace the ai r cl eaner element .For addit ional informat ion, refer t o: Air Cl eaner (303-12A Int ake Ai r Dis t ri but ion and Fi lt ering - I6 3.2L Petrol , Removal andIns t allat ion).
Automatic Transmission
Every 10 years or 150,000 miles (240,000 km): Renew automat ic t rans mis s ion flui d.For addit ional informat ion, refer t o: Specificati ons (307-01 Aut omati c Trans mis s ion/Transaxle, Speci fi cat ions ).
Manual Transmission
Every 10 years or 150,000 miles (240,000 km): Renew manual t rans mi ss ion fl ui d.For addit ional informat ion, refer t o: Specificati ons (308-00 Manual Trans mis s ion/Transaxle and Clutch - GeneralInformat ion, Speci ficat ions).
Power Transfer Unit
Every 10 years or 150,000 miles (240,000 km): Renew power t rans fer unit oi l.For addit ional informat ion, refer t o: Specificati ons (205-03, Speci fi cat ions ).
Differential Assembly - Rear
Every 10 years or 150,000 miles (240,000 km): Renew rear different ial oil .For addit ional informat ion, refer t o: Specificati ons (205-02 Rear Drive Axle/Different ial, Specifi cat ions ).
Suspension and Body Mountings

For addit ional informat ion, refer t o: Specificati ons (307-01 Aut omati c Trans mis s ion/Transaxle, Speci fi cat ions ).
Manual Transmission
Every 10 years or 150,000 miles (240,000 km): Renew manual t rans mi ss ion fl ui d.
For addit ional informat ion, refer t o: Specificati ons (308-00 Manual Trans mis s ion/Transaxle and Clutch - General
Informat ion, Speci ficat ions).
Power Transfer Unit
Every 10 years or 150,000 miles (240,000 km): Renew power t rans fer unit oi l. For addi ti onal informat ion, refer to:
(308-07B Transfer Case)
Power Trans fer Uni t - TD4 2.2L Di esel , Vehi cl es W i th: M66 6-Speed Manual Trans mis s io n AW D (Removal and
Ins tal lat ion),
Power Trans fer Uni t - TD4 2.2L Di esel , Vehi cl es W i th: M66 6-Speed Manual Trans mis s io n AW D (Removal and
Ins tal lat ion).
Differential Assembly - Rear
Every 10 years or 150,000 miles (240,000 km): Renew rear different ial oil .
For addit ional informat ion, refer t o: Specificati ons (205-02 Rear Drive Axle/Different ial, Specifi cat ions ).
Suspension and Body Mountings Check for free play i n all s us pens ion and body mounti ng rubbers . Check condit ion of s uspens ion rubber boots and gait ers .
Fuel System
Check fuel sys tem pipes , hos es and unions for chafi ng, l eaks and corros ion. Electrical Harnesses
Check al l el ect ri cal harnes s es for chafing. Oil/Fluid Leaks
Check for oil/fluid leaks . Power Steering
Check power s teering rod bal l joi nt fixi ngs , gait ers and condi ti on of bal l joi nt s an d dus t covers .Check power s teering pipes , hos es and unions for chafi ng, leaks and corros ion.
Exhaust System
Check exhaust s ys tem for l eaks , securi ty and damage. Clutch
1. Check clut ch pipes and unions for chafi ng, l eaks and corrosi on.
Fault Lamp(s) If fault l amp(s ) are ill uminat ed, t est the as s oci at ed s yst em us i ng Land Rover approv ed di agnos ti c equipment and
report findi ngs . Road Test
Carry out road t est of vehicle.
For addit ional informat ion, refer t o: Road/Roller Tes ti ng (100-00 General Informati on, Des cri pt ion and Operati on).
General
Endors e Service Record. Report any unus ual features of vehi cl e condi ti on and any addi ti onal work required.
Vehicles Operating Under Arduous Conditions
Recommended s ervi ce interval s for vehicles operat ing under arduous condit ions are de t ail ed below.
Braking System CAUTION:
When vehicles are operating under arduous conditions, the following service items mu st be carried
out every 3 months or 3,750 miles (6,000 km).
Ins pect front brake pads for wear.

Publ is hed: 23-Sep-2011
Rear Drive Axle/Differential -
LubricationDescriptionLubricantCapacity (liters/pints/US quarts)
Haldex controlled coupli ngSt at oil SL01-301. Land Rover Part No LR0031360.65/1.1/0.69
Rear drive axl e/different ialCas trol Axl e EPX 80W -90. Land Rover Part No LR0031560.7/1.2/0.74
General Specification
ItemSpecificationDi fferenti al t ypeLow offset hypoi d s piral bevel des ign
Rati o2.58:1
Electronic t orque managed (ETM) rangeUp to 1500 Nm (1106 lbf.ft)
Torque SpecificationsDescriptionNmlb-ft
Acti ve on-demand coupl ing module64
Acti ve on-demand coupl ing t o different ial2418Acti ve on-demand oil pump64
Driveshaft to the rear flange*4030
Rear different ial front bus h retaini ng bol ts *175129Rear different ial ins ulator t o t he rear different ial2518
Rear different ial rear bush ret ai ning bolt s *11081
Rear different ial support bracket2518Rear drive axl e/different ial pinion fl ange nut *13096
Rear drive axl e/different ial fl uid drain pl ug3526
Rear drive axl e/different ial fl uid fil ler plug3526* New nuts/bolts must be fitted

Publi s hed: 11-May-2011
Rear Drive Axle/Differential - Rear Drive Axle and Differential
Des cript ion and Operat ion
COMPONENT LOCATION
ItemPart NumberDescription
1-Acti ve on-demand coupli ng2-Different ial
3-Acti ve on-demand coupli ng module
OVERVIEW
The different ial operates i n conjunct ion wit h t he act ive on-demand coupling to provide dri ve to the rear axl e.
Vehicles from 2009MY
Generati on 4 Acti ve On-Demand Coupli ng from 2009MY

Vehicles from 2009MY are fit ted wit h a modi fied des ign of t he acti ve on-demand coupling, known as the generat ion 4 uni t.The new acti ve on-demand coupl ing has desi gn improvement changes over t he previous generati on 3 coupl ing whi ch gi vet he foll owing advant ages:
Reduced bas e t orque at high different ial s peedTorque acti vat ion i ndependent of different ial s peedAccurat e t orque l imi terEnergy s tored in accumulat orLower max current cons umpt ionFast er res pons e.
DIFFERENTIAL
The different ial unit i s a l ow-offs et -hypoid spi ral-bevel des ign, bas ed on a 167mm crown wheel geared t o deli ver a rat io of2.58:1. The des ign of t he different ial gears and t he 4 mount ings t hat control t he t orque react ion of t he uni t wit hin the rears ubframe, provi de a different ial unit of excel lent efficiency and refinement.
The t orque delivered to the di fferenti al i s cont rol led by t he acti ve on-demand coupli ng, mount ed int o t he voi d at t he frontof the di fferenti al's cas t-alumi num casi ng, whi ch als o provi des t he oil reservoi r for t he coupli ng.
ACTIVE ON-DEMAND COUPLING
Acti ve On-demand Coupl ing
• NOTE: Generati on 3 coupling shown.

Publi s hed: 11-May-2011
Rear Drive Axle/Differential - Rear Drive Axle and Differential
Diagnosi s and Tes ti ng
For addit ional informat ion.
REFER to: Driveli ne Sys t em (205-00 Driveline Sys tem - General Informat ion, Diagnosi s and Test ing).