Land Rover Defender Electrical Library Elld970e Rover Manual

DESCRIPTIONANDOPERATION
DEFENDER 97MY 4.1
ENGINE
IMMOBILISATION ANDALARM SYSTEM (IFFITTED)
DESCRIPTION Although akey isused inthe normal waytolock andunlock thevehicle, this
will not fully armtheengine immobilisation/alarm system.Thesystem isfully
armed withanRF handset, whichtransmits arolling code.Thiscode is
received bythe alarm ECU.Ifa door isopened withoutthealarm ECU
receiving thecorrect signalfromthehandset, thealarm willsound.
The alarm ECUalsoinforms theengine immobilisation ECUifan incorrect...

DESCRIPTIONANDOPERATION
4.2 DEFENDER97MY
9.
Finally, OPENandCLOSE thedrivers door.Ifthe code hasbeen entered
correctly, theanti-theft indicatorlampwillextinguish andtheengine can
be started.
NOTE: Ifthe vehicle hasbeen previously armed,andthehandset is
inoperative, thealarm willsound throughout theEKA entering
process.
OPERATION Feed fromthepositive batteryterminal isconnected tothe engine compartment
fuse box(C632-1) byabrown wire.Current flowsthrough fusiblelink1and
fusible link2ofthe engine...

DESCRIPTIONANDOPERATION
DEFENDER 97MY 4.3
The
same principle istrue ofthe LHdoor switch andthebonnet switch.TheLH
door switch (C033-1) isconnected tothe alarm ECU(C061-16) bya
purple/blue wire,andthebonnet switch(C007-2) isconnected tothe alarm
ECU (C061-9) byaorange/blue wire.Thebonnet switchisearthed (C007-1) on
a black wire.Bothinteract withtheBBUS inexactly thesame wayasthe RH
door switch.
In addition tobeing supplied withaconstant batteryfeed(C666-2), theBBUS
also hasitsown internal powersupply,...

DESCRIPTIONANDOPERATION
4.4 DEFENDER97MY
IMMOBILISATION With
theignition switchinposition II,power flowsacross theswitch (C094-1)
and supplies afeed tofuse 20ofthe passenger compartment fusebox
(C580-39) onawhite wire,andtothe engine immobilisation ECU(C868-8 &
C863-5) onablack wire.
The immobilisation ECUisprovided withapermanent earth(C863-1) ona
black wire.
Fuse 20ofthe passenger compartment fusebox(C580-40) isconnected tothe
alarm ECU(C061-10) byagreen wire,theengine immobilisation warninglamp...

DESCRIPTIONANDOPERATION
DEFENDER 97MY 4.5
The
immobilisation ECUalsocontrols thefuel cut-off solenoid (C198-1), which
is connected (C863-4)byablack wire.Theimmobilisation ECUfailstoprovide
the solenoid afeed ifthe vehicle hasbeen immobilised.
In addition tothe features directlycontrolled bythe immobilisation ECU,a
passive coilisfitted around theignition barrel.Thisisauser friendly wayof
re-mobilising theengine. Thepassive coil(C663-1) receivesapower supply
from thealarm ECU(C057-7) onanorange/green...

DESCRIPTIONANDOPERATION
4.6 DEFENDER97MY
CHARGING
ANDSTARTING -DIESEL
DESCRIPTION The charging systemconsists ofan alternator containing arectifier packand
regulator tomaintain aconstant directcurrent (dc)voltage inthe system. The
alternator isbelt driven fromthecrankshaft andcooled byafan mounted
behind thepulley. Thealternator hasafixed coilwound statorinwhich afield
coil rotor rotates. Sliprings conduct currenttoand from thefield coils via2
carbon brushes. Theregulator sensesoutputvoltage andcontrols...

DESCRIPTIONANDOPERATION
DEFENDER 97MY 4.7
When
thealternator outputsavoltage equaltothat supplied bythe battery, the
warning lampisextinguished asthe potential difference acrossthelamp is0
volts. Thediode between thealternator andwarning lampprevents reverse
flow. The regulator functions asan electronic controlswitchonthe earth sideofthe
field coils. Theregulator rapidlyswitches theearth circuit offand ontocontrol
the generated voltageandcurrent tosafe limits.
If the battery isin alow state ofcharge...

DESCRIPTIONANDOPERATION
4.8 DEFENDER97MY
Glow Plugs
Glowplugs arefitted tothe TDi engine toassist starting. Aconstant batteryfeed
is supplied byfusible link3(C907-3) tothe glow plugtimer (C189-5) ona
brown wire.When theignition switchisturned toposition II,asecond feedis
supplied tothe glow plugtimer (C189-3). Thistriggers afeed (C189-6) tothe
glow plugs.
With theignition switchinposition II,theglow plugwarning lamp(C230-4) is
provided afeed viafuse 17(C580-33) ofthe passenger compartment fusebox
on...

DESCRIPTIONANDOPERATION
DEFENDER 97MY 4.9
CHARGING
ANDSTARTING -V 8
DESCRIPTION The charging systemconsists ofan alternator containing arectifier packand
regulator tomaintain aconstant directcurrent (dc)voltage inthe system. The
alternator isbelt driven fromthecrankshaft andcooled byafan mounted
behind thepulley. Thealternator hasafixed coilwound statorinwhich afield
coil rotor rotates. Sliprings conduct currenttoand from thefield coils via2
carbon brushes. Theregulator sensesoutputvoltage andcontrols...

DESCRIPTIONANDOPERATION
4.10 DEFENDER97MY
When
thealternator outputsavoltage equaltothat supplied bythe battery, the
warning lampisextinguished asthe potential difference acrossthelamp is0
volts. Thediode between thealternator andwarning lampprevents reverse
flow. The regulator functions asan electronic controlswitchonthe earth sideofthe
field coils. Theregulator rapidlyswitches theearth circuit offand ontocontrol
the generated voltageandcurrent tosafe limits.
If the battery isin alow state ofcharge...