Land Rover Defender Electrical Library Elld970e Rover Manual
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Page 31
DESCRIPTIONANDOPERATION DEFENDER 97MY 4.11 When theignition switchisturned tothe crank position (090-1), itprovides a feed tothe starter relaycoil(C151-85) onawhite/red wire.Therelay isearthed (C151-86) onablack wire.Feed fromfusible link2(C907-2) ofthe engine compartment fuseboxcannow flowacross thestarter relay(C151-87 & C151-30). Currentflowsfromthestarter relay(C151-30) tothe similarily energised fuelpump relay(C298-87) onawhite/red wire.Thefuelpump relay (C2298-30) thenprovides afeed tothe fuel pump...
Page 32
DESCRIPTIONANDOPERATION 4.12 DEFENDER97MY HEATER BLOWER DESCRIPTION The heater isoperated bythree sliding controls attached tothe instrument binnacle. Twoofthe controls regulate thetemperature andairflow distribution. The third control operates thetwo speed heater blower. Theheater blower operates withtheignition switchinposition I. OPERATIONFeed fromthepositive batteryterminal isconnected tothe engine compartment fuse box(C632-1) byabrown wire.Current passesthrough fusiblelink2. Fusible link2(C907-2)...
Page 33
DESCRIPTIONANDOPERATION DEFENDER 97MY 4.13 HEATED REARWINDOW (HRW) DESCRIPTION The heated rearwindow (HRW)isoperated byalatching switchmounted on the dash panel. Whentheswitch isset tothe On position, theinstrument panel warning lampwillilluminate toindicate theHRW isoperating. TheHRW only operates whentheignition switchisturned toposition II. OPERATIONFeed fromthepositive batteryterminal isconnected tothe engine compartment fuse box(C632-1) byabrown wire.Current passesthrough fusiblelink2and fusible...
Page 34
DESCRIPTIONANDOPERATION 4.14 DEFENDER97MY WIPERS ANDWASHERS DESCRIPTION The front windscreen wipersarecontrolled fromthecolumn switchandoperate when theignition switchisin position II.The wipers have2speed settings, along withaflick wipe andsingle wipefacility. Anintermittent wipefunction and programmed washwipefacility iscontrolled bythe front wiper delay unit. Moving thewiper switch downfromtheoffposition initiatestheintermittent wipe function. Movingthewiper switch upone position fromtheoffposition,...
Page 35
DESCRIPTIONANDOPERATION DEFENDER 97MY 4.15 OPERATION Feed fromthepositive batteryterminal isconnected tothe engine compartment fuse box(C632-1) byabrown wire.Current passesthrough fusiblelink2 (C907-2) whichisconnected tothe ignition switch(C028-1) byabrown wire. With theignition switchinposition II,power flowsacross theswitch (C094-1) to fuse 3(C580-5) andfuse 4(C580-7) ofthe passenger compartment fuse box, which areconnected inparallel. Botharefedbywhite wires. Fuse3 supplies therear wash/wiper...
Page 36
DESCRIPTIONANDOPERATION 4.16 DEFENDER97MY Park Circuit Positioning thewash/wipe switchtothe off position cutspower tothe wiper motor onthe blue/light greenorred/light greenwire.Thepark circuit operates to return thewipers totheir park position. Thepark switch (C030-4), integralto the wiper motor unit,receives a12 volt supply fromfuse4ofthe passenger compartment fusebox(C580-6) onagreen wire.Thepark switch isclosed with the wipers inany position otherthantheirpark position. With thepark switch closed,...
Page 37
DESCRIPTIONANDOPERATION DEFENDER 97MY 4.17 When thedelay unit(C303-6) receivesafeed from thewasher switch(C278-2), it outputs afeed (C303-2) tothe wash/wipe switch(C278-4) onayellow/light green wire.Power flowsoutthrough thewash/wipe switch(C278-1) andonto the wiper motor (C030-3), whichoperates atslow speed. Whenthewasher switch isreleased, thedelay unitwilloperate thewipers forafurther 3cycles. Once thishas been completed, feedtothe wash/wipe switchiscut bythe delay unit and thepark circuit...
Page 38
DESCRIPTIONANDOPERATION 4.18 DEFENDER97MY EXTERIOR LAMPS-Brake andReverse Lamps DESCRIPTION The brake lamps illuminate whentheignition isin position IIand thebrake pedal isdepressed. Thereverse lampsilluminate whentheignition isin position IIand reverse gearisselected. OPERATIONFeed fromthepositive batteryterminal isconnected tothe engine compartment fuse box(C632-1) byabrown wire.Current passesthrough fusiblelink2 (C907-2) andisconnected tothe ignition switch(C028-1) byabrown wire. When theignition...
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DESCRIPTIONANDOPERATION DEFENDER 97MY 4.19 EXTERIOR LAMPS-Head, SideandNumber PlateLamps DESCRIPTION The lights areoperated fromthelighting switchlocated onthe steering column. The lighting switchhastwopositions. Position1switches onthe taillamps, the number platelamps, andfront sidelamps. Position 2additionally switcheson the front headlamps. Whentheheadlamps areon,thecolumn switchcanbe used toswitch between mainbeam anddipped beam. The headlamps canbeflashed withthelights onoroff, bypulling thecolumn...
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DESCRIPTIONANDOPERATION 4.20 DEFENDER97MY Fuse 15ofthe passenger compartment fusebox(C580-30) isconnected tothe LH front sidelamp (C538-2) byared/black wire.Thelamp isthen earthed (C538-1) onablack wire.Connected inparallel withtheLHfront sidelamp is the LHtrailer pick-up (C877-1), whichisalso fedbyared/black wire.Thetrailer pick-up (C877-2) isconnected inseries tothe LHtaillamp (C404-3) bya red/black wire.Thetaillamp isearthed (C404-1) onablack wire. Headlamps Withthelighting switchinthe main beam...