Land Rover Defender Workshop 1993 Rover Manual

RE-ISSUED: FEB 1993  

ELECTRICAL EQUIPMENT 
CHASSIS AND RADIO  HARNESS CONNECTORS  ST3408M 
1. Gearbox over temperature  switch connection 
2. Main harness  connection 
3. Transmission low oil connections 
4.  Centre  differential  lock connections 
5. Centre  differential  lock switch 
6.  Reverse  light connection 
7. Speed  sensor  connection 
8.  Radio  supply  lead 
9. Rear speaker  connection 
10.  Rear  speaker  and seat  belt connections 
11. Supply  to split  charge  circuit, 110 only 
12.  Main  harness  connection...

39 RE-ISSUED: FEB 1993  

ELECTRICAL EQUIPMENT 
LOCATION OF RELAYS,  TIMERS AND CONTROL  UNITS DEFENDER  110 (ST3362M) 
Relay  etc 8 circuit  symbol 
Location 
1 Rear screen  relay module  HR4  ) 
2  Voltage  sensitive  switch relay module  SC2  ) 
4  Water temperature  signal conditioner  WT2  ) 
5  Service  reminder  unit EM1  ) 
6  Inertia  switch  EF9  ) 
7  Flasher/hazard  unit DF5  ) 
8  Wiper delay unit FW3  ) 
10  Lighting  relay module  LS2  ) 
11  Evaporator  relay module  AC3  ) 
12  Compressor  relay moduler  AC9  )...

ELECTRICAL EQUIPMENT 
LOCATION OF RELAYS,  TIMERS AND CONTROL UNITS DEFENDER 90 (ST3442M) 
Unit and circuit symbol Location 
Service  reminder  unit EM1  ) behind instrument  binnacle 
Engine/brake  warn light check  unit WL 
1 
) 
) 
) 
) 
) 
) 
) 
) adjacent  dash fuse box 
) 
) 
1 Warning  buzzer unit AW6 
4  Diagnostic  relay module  MF16 
5.  MFI ECM  unit ECM  ) RH toe box  area 
6.  Main MFI relay  module  EF6 
REVISED: OCT 1993 41 
2. 
3.  

ELECTRICAL EQUIPMENT 
CIRCUIT DIAGRAMS 
The circuits  which comprise  the electrical  system are 
presented  as a series 
of individual  circuit diagrams 
covering  a specific  function,  eg starter  circuit,  lighting 
circuit,  audible  warning  circuit etc. To ensure 
continuity 
of terminology  throughout the circuits, 
circuit  symbols  and abbreviations  are consistent. 
Wire colour  is as follows: 
B=black  G=green  K=pink L=light N=brown 
O=orange  P=purple R=red S=slate(grey)  U=blue 
W=white...

ELECTRICAL EQUIPMENT 
DASH FUSE BOX SCHEMATIC DEFENDER 110 ST3385M 
MAIN  DASH VALUE CABLE CABLE  CIRCUIT SERVED BY FUSE 
FUSE  FUSE  COLOUR  COLOUR 
IN  OUT 
B  1  20A N P Aux. instrument;  fog lights;  horn: int.  lights 
B  2  15A  N  P,PW Hazard lights;  SRI light 
A  3  15A  W G Reverse light:  electric screen wash 
A  4  10A  W G Dimming mirror 
A  5  10A W G Stop lights, direction  indicators 
C  6  7.5A U  UP  Not used 
C  7  7.5A UR UB Right head lamp dipped  beam 
C  8  7.5A UR UK Left head...

ELECTRICAL EQUIPMENT 
DASH FUSE BOX SCHEMATIC DEFENDER 90 ST3443 
MAIN DASH VALUE ClRCUIT SERVED 
FUSE  FUSE 
B  1  20A Aux. instrument;  fog lights;  horn; int. lights 
B  2  15A Hazard warning  lights 
A  3  15A Reverse light: electric  screen wash 
A  4  10A Heater blower motor 
A  S  10A Stop lights,  direction  indicators 
6  Not used 
C  7  7.5A Right head  light dipped  beam 
C  8  7.5A Left head  light dipped  beam 
C  9  7.5A Right head light main  beam 
C  10  7.5A  Left head  light main  beam...

ELECTRICAL EQUIPMENT 
MULTIPORT FUEL INJECTION (MFI) CIRCUIT  DEFENDER 110 (ST3358M) 
EF1  Idle air control valve  EF17 Fuel injectors 
EF2  Mass air flow  sensor  EF18  Fan 
control timer 
EF3  Engine coolant  temperature  sensor  EF19 Resistor (manual  transmission) 
EF4  Engine fuel  temperature  sensor  EF20 Onboard  diagnostic  module 
EF5  Throttle 
position sensor EM1 Service  reminder  indicator  unit 
EF6 Main relay  module EM2 Vehicle speed sensor 
EF7  Canister  purge valve 
EM3 Service...