Diagram sections — 12 (17 total)
COOLING FAN DEFOGGERS HORN POWER ANTENNA POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO STARTING/CHARGING TRUNK, TAILGATE, FUEL DOOR WIPER/WASHER
COOLING FAN Auxiliary Cooling Fan Wiring Diagram for BMW 318i 1991 List of elements for Auxiliary Cooling Fan Wiring Diagram for BMW 318i 1991: 27 A/c input A/c request input A/c select switch Auxiliary fan (in front of radiator) Auxiliary fan normal speed blower resistor (6 ohms) (in front of radiator, left side of auxiliary fan) C114 Closed above o 196 f o (91 c) Closed above o 210 f o (99 c) Control switches Diode Dual temperature switch (top right side of radiator) Evaporator temperature regulator (on left side of evaporator housing) Fuse 18 30a Fuse 19 7.5a Fuse 20 30a Fuse 3 15a G106 (on inner fender, behind left headlight) G202 (behind left side of dash, above brake pedal) Hot at all times Hot in run only from unloader relay k7 K1 normal speed relay K6 high speed relay Motronic control unit (above glove box) Off Power distribution box (left rear corner of engine compartment) Red Some vehicles use an additional splice (s325). see ground distribution for details.
DEFOGGERS Defogger Wiring Diagram for BMW 318i 1991 List of elements for Defogger Wiring Diagram for BMW 318i 1991: 23 (not used) Antenna amplifier am/fm (lower left "c" pillar) Front power distribution box (left rear side of engine compartment) Fuse 23 5a Fuse 6 20a G201 (below right side of dash) G310 (sedan) (upper right rear seatback) G312 (coupe) (upper left rear seatback) Ground Hot at all times Hot in run and start Ihkr control panel Integrated climate regulation control module (center console) Nca Rear defogger relay (front power distribution box) Rear defogger switch Rear defogger/ antenna Rear window defogger activation Rear window defogger switch Suppression filter (lower right "c" pillar) X18155 X18156 X18157
HORN Horn Wiring Diagram for BMW 318i 1991 List of elements for Horn Wiring Diagram for BMW 318i 1991: 10 Fuse 7 15a G106 (on inner fender, behind left headlight) Horn brush/ slip ring Horn relay Horn switches Hot at all times Hot in accy, run or start Left horn Power distribution box (left rear corner of engine compt) Right horn
POWER ANTENNA Power Antenna Wiring Diagram for BMW 318i 1991 List of elements for Power Antenna Wiring Diagram for BMW 318i 1991: 17 (not used) :w/ radio only :w/ sound system Amplifier (w/ sound system) (left front corner of trunk) Antenna Digital radio Fuse 28 30a G404 (left side of trunk) Ground Hot at all times Nca Power Power antenna (left side of trunk) Power distribution box (left rear corner of engine compt) Raise/ lower input Red Solid state
POWER DOOR LOCKS Power Door Lock Wiring Diagram for BMW 318i 1991 List of elements for Power Door Lock Wiring Diagram for BMW 318i 1991: 33 (not used) Accy Automatic unlock request Central locking control unit (left kick panel) Door Driver's door lock motor Fuse 27 30a G202 (under left side of dash, above brake pedal) Ground Hot at all times Ignition switch Inertia switch Interior light timer control (left kick panel) Left rear door lock motor Lock Lock control Lock request input Off Power distribution Power distribution box (left rear corner of engine compt) Power input Right front door lock motor Right front door micro switch Right rear door lock motor Run Saftey catch button Start Trunk lid lock motor Unlock Unlock control Unlock inhibit request input Unlock inhibit switch Unlock request input
POWER MIRRORS Power Mirror Wiring Diagram, Convertible for BMW 318i 1991 List of elements for Power Mirror Wiring Diagram, Convertible for BMW 318i 1991: 13 Down Driver's mirror Fuse 19 7.5a G202 (under left side of dash, above brake pedal) Hot in run only from unloader relay Interior lights system (interior light timer control) Left Mirror control switch Off Passenger's mirror Power distribution box (left rear corner of engine compartment) Right Selector Power Mirror Wiring Diagram, Except Convertible for BMW 318i 1991 List of elements for Power Mirror Wiring Diagram, Except Convertible for BMW 318i 1991: 15 (coupe only) Down Driver's Driver's side mirror Front power distribution box (left rear side of engine compartment) Fuse f24 10a G203 (right kick panel) Hot in run and start Left Mirror control switch Nca Passenger's Passenger's side mirror Right X10017
POWER SEATS Heated Seats Wiring Diagram for BMW 318i 1991 List of elements for Heated Seats Wiring Diagram for BMW 318i 1991: 12 (not used) Back heater Fuse 15a G202 (under left side of dash, above brake pedal) Hot in start or run Left front seat Left front seat heater switch Power distribution box (left rear corner of engine compt) Red Right front seat Right front seat heater switch Seat heater
POWER WINDOWS Power Window Wiring Diagram, 2 Door Except Convertible for BMW 318i 1991 List of elements for Power Window Wiring Diagram, 2 Door Except Convertible for BMW 318i 1991: 28 Central locking module (right side of i/p) Close auto Comfort relay (below left side of i/p) Driver's door jamb switch Driver's power window switch (center console) Driver's side power window module (driver's door) Driver's window retraction door handle contact switch Front power distribution box (left rear side of engine compt) Fuse f14 30a G202 (below left side of i/p) G302 (center console) Hot at all times Instrument cluster system Interior lights system Off Open auto Passenger's door jamb switch Passenger's power window switch (center console) Passenger's side power window module (passenger's door) Passenger's window retraction door handle contact switch Red Window closed Window open Window open off X18279 X18280 X9744 X9749 Power Window Wiring Diagram, 4 Door for BMW 318i 1991
Power Window Wiring Diagram, Convertible for BMW 318i 1991 List of elements for Power Window Wiring Diagram, Convertible for BMW 318i 1991: 15 15a Fuse 17 30a G202 (under left side of i/p, above brake pedal) Hot in start or run Left front window console switch Left front window motor Left rear window console switch Left rear window motor Not used Power distribution box (left rear corner of engine compt) Power window circuit breaker (center console) Right front window console switch Right front window motor Right rear window console switch Right rear window motor
RADIO Radio Only for BMW 318i 1991 List of elements for Radio Only for BMW 318i 1991: 24 (not used) Antenna C212 C215 C216 C218 C219 C244 C245 Digital radio Exterior lights system Fuse 7a Fuse f12 7.5a Fuse f21 7.5a G202 (behind left side of dash) Hot at all times Hot in accy, run and start Left front speaker Left rear speaker Nca Power antenna (left side of trunk, behind left wheel well) Power distribution box (left rear corner of engine compt) Right front speaker Right rear speaker with Sound System for BMW 318i 1991 List of elements for with Sound System for BMW 318i 1991: 27 Amplifier (left side of trunk, above left wheel well) Antenna C213 C214 C215 C216 C244 Digital radio Exterior lights system Fuse 10a Fuse 7a Fuse f12 7.5a Fuse f21 7.5a Fuse f27 30a G202 (behind left side of dash) G304 (below left side of rear seat) Hot at all times Hot in accy, run and start Left front speaker Left front tweeter Left rear speaker Nca Power antenna (left side of trunk, behind left wheel well) Power distribution box (left rear corner of engine compt) Right front speaker Right front tweeter Right rear speaker
STARTING/CHARGING Charging Wiring Diagram for BMW 318i 1991 List of elements for Charging Wiring Diagram for BMW 318i 1991: 21 Abs electronic control unit (behind left side of dash, above hood release) Accy Alternator Battery Battery junction block Charge indicator Diagnostic connector (top left front of engine) Filter capacitor (lower left front of engine, on alternator) G103 (right rear corner of trunk) Ignition switch Instrument cluster Nca Off Power distribution box (left rear corner of engine compt) Power distribution system Power distribution system (auxiliary fuse) Red Run Start Starter Voltage monitor input Starting Wiring Diagram for BMW 318i 1991 List of elements for Starting Wiring Diagram for BMW 318i 1991: 23 30h Accy Battery Battery junction block C114 C200 Charging system (alternator) Diagnostic connector (left rear of engine compt) Fuse 7.5a G103 (on right shock tower) Hot in run or start Ignition switch Instrument cluster K5 unloader relay K7 unloader relay Off Power distribution Power distribution box (left rear corner of engine compt) Power distribution system Red Run Start Starter
TRUNK, TAILGATE, FUEL DOOR Trunk, Tailgate, Fuel Door Wiring Diagrams, Convertible for BMW 318i 1991 List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams, Convertible for BMW 318i 1991: 19 (not used) Accy Central locking control unit (left kick panel) Door locks system Fuse 27 30a G202 (under left side of dash, above brake pedal) Gas filler lock motor Hot at all times Ignition switch Lock Locking rod Off Power distribution Power distribution box (left rear corner of engine comp) Run Start Trunk lid lock motor Unlock Unlock inhibitor switch (top rear of driver's door) Trunk, Tailgate, Fuel Door Wiring Diagrams, Except Convertible for BMW 318i 1991 List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams, Except Convertible for BMW 318i 1991: 15 Central locking module (right side of dash, behind glove box) Door locks system Front power distribution box (left rear side of engine compartment) Fuse f35 25a Fuse f7 5a G203 (right kick panel) Gas filler lock motor Hot at all times Trunk lock motor X10015 X10018 X13012 X13013 X311 X315
WIPER/WASHER Wiper/Washer Wiring Diagram for BMW 318i 1991 List of elements for Wiper/Washer Wiring Diagram for BMW 318i 1991: 33 (325ix & 318ic) (325ix only) (except 3125ix & 318ic) (except 3125ix) (not used) 15b 31b 53b Fast Fast control Fast input Fuse 5 30a G202 (under left side of dash, above brake pedal) G207 (upper left side of steering column) Gnd Hot in accy, run or start Off Operate control Park Pause Pause input Power distribution box (left rear corner of engine compt) Power input Run Single wipe Slow Slow input Wash input Wash switch Washer pump (ahead of right front wheel well) Wiper control unit Wiper motor (inside left side of fresh air intake cowl) Wiper/ washer switch
