Diagram sections — 28 (62 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Air Conditioning Wiring Diagrams (1 of 3) for BMW 525iT 1994 List of elements for Air Conditioning Wiring Diagrams (1 of 3) for BMW 525iT 1994: 55 (1994) (1995) (left side of dash) A/c switch Alternator Auxiliary fan signal Battery Box C 1995 vftc Charging system Circulation switch Defog switch Defogger switch Distribution Evaporator temp Evaporator temperature sensor (below left side of dash) Front power Function light recirc Function light-a/c Function light-defogger Function light-recirc Fuse 10a 15a Fuse 15a Fuse 30a Fuse 7.5a G202 Ground Heater temp-left Heater temp-right Hot at all times Hot in run or start Ignition Illumination Independent ventilation Inside temp sensor Instrument cluster Integrated climate regulation control module (above center console) Interior lights system Left heat exchanger temperature sensor (right side of left footwell) Nca Nominal air flow value Nominal temp value-left Nominal temp value-right Outside temp Outside temperature sensor (near left headlight assembly) Recirc switch Right heat exchanger temperature sensor (right side of plenum) Starter Starting system Switching unit Vehicle speed Voltage Voltage for func lights Water valve act Water valve act-right Water valve assembly (left side of engine bulkhead) Air Conditioning Wiring Diagrams (2 of 3) for BMW 525iT 1994 List of elements for Air Conditioning Wiring Diagrams (2 of 3) for BMW 525iT 1994: 42 (1994) (1995) (left side Acc Battery Blower motor Blower potentiometer (internal to control panel in 1995) Blower relay (in power distribution box) Blower resistors (left side of right footwell) Blower switch C 1995 vftc Control panel Engine control module (dme) (in e-box) Fan Front power distribution box Fuse 19 30a Fuse 27 7.5a G101 (right side of engine compartment G202 G202 (left side of dash, left of steering column) Hot at all times Ignition switch Interior lights system Interior temp sensor Left of steering column) Left rotary temp switch Max Nca Of dash, Off Power distribution Red Right rotary temp switch Run Sensor Start Thermal limiter W/ park ventilation W/o park ventilation Water valve switch X18154 X9001 Air Conditioning Wiring Diagrams (3 of 3) for BMW 525iT 1994 List of elements for Air Conditioning Wiring Diagrams (3 of 3) for BMW 525iT 1994: 38 (below right seat) (left footwell) g200 (not used) 530, A/c compressor Aux water pump Auxiliary fan motor Auxiliary water pump Auxiliary water pump relay (in front power distribution box) C 1995 vftc Compartment) Compressor control Compressor control relay (in power distribution box) Computer data lines system Data line Fresh air flap motor (below right side of dash) Fresh flap act G100 (front left side of engine compartment) G101 (front right side of engine compart- ment) G101 (front right side of engine compartment) G202 (left side of dash) High speed relay (in left auxiliary relay box) Integrated climate regulation control module (above center console) Nca Normal speed relay (in power distribution box) On-board computer (center of dash) Park heating/ ventilation relay box Pressure Rear defogger act Rear defogger system Recirc flap act Recirculation flap motor (right of steering column) Red Sensor for activation Switch (front right side of engine Temper- ature switch (right top of radiator) Voltage for flap Voltage for rot sw
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams (1 of 2) for BMW 525iT 1994 List of elements for Anti-lock Brake Wiring Diagrams (1 of 2) for BMW 525iT 1994: 61 525i/t Abs pump motor relay (right "a" pillar, behind right footwell) Abs/asc vlv sig Alt Asc multi-function lp Asc passive button volt sig Aux throt ctrl mtr Aux throt ctrl mtr gnd Auxiliary relay box (ex late prod) (left side of engine compt) front power distribution box (late prod) (rear left side of engine compt) B+ junction point (in e-box) Batt volt Brake fluid warn lp Brake lt sig Eml-sig Eng spd sig Engine control module relay (in e-box) Engine controls system Ex 525i/t Front power distribution box (rear left side of engine compt) Fuse f55 50a Fuse f56 25a G100 (front left side of engine compartment) Gnd Hot at all times L fnt inlet vlv L fnt outlet vlv L fnt spd sens L fnt spd sens gnd L fnt wheel spd sens sig L rear outlet vlv L rear spd sens gnd L rear spd volt sig L rear wheel spd sig Left front abs speed sensor Left rear abs speed sensor Nca Plunger vlv Pres intake vlv Red Right front abs speed sensor Right rear abs speed sensor Rt fnt outlet vlv Rt fnt spd sens gnd Rt fnt spd sens volt sig Rt fnt wheel spd sig Rt rear inlet vlv Rt rear outlet vlv Rt rear spd sens gnd Rt rear spd sens volt sig Rt rear wheel spd sig Slip control module (abs/asc) (rear right side of engine compartment) Starting/charging system Throt ctrl pot gnd Throt ctrl pot sig Throt ctrl pot volt Transmission control module (in e-box) Txd diag data link Valve relay (left "a" pillar, behind left footwell) Vlv rly/pump mtr rly Volt sig Warn lp Anti-lock Brake Wiring Diagrams (2 of 2) for BMW 525iT 1994 List of elements for Anti-lock Brake Wiring Diagrams (2 of 2) for BMW 525iT 1994: 42 525i/t Abs hydraulic unit (left side of engine compartment) Abs ind Asc ind Asc switch Auxiliary throttle motor (near throttle body) Auxiliary throttle position sensor (top front of engine compartment) Brake light switch (on brake pedal) Carbon canister (behind left front fog light) Data link connector (near e-box, left) Engine control module (dme) (in e-box) Ex 525i/t Front power distribution box (rear left side of engine compartment) Fuse f1 15a Fuse f17 7.5a G100 (front left side of engine compartment) G200 (left footwell) Ground Hot in accy, run or start Hot in run and start Ign timing sig Instrument cluster Intake valve Interior lights system Left front inlet valve Left front outlet valve Left rear inlet valve Left rear outlet valve Nca Park brake sig Park brake switch (below center of console) Plunger valve Pump motor Right front inlet valve Right front outlet valve Right rear inlet valve Right rear outlet valve Sig line Slip control module (abs/asc) (rear right side of engine compartment) Throt angle sig Throttle position sensor (top front of engine compartment) Trans intervention
ANTI-THEFT Anti-theft Wiring Diagram for BMW 525iT 1994 List of elements for Anti-theft Wiring Diagram for BMW 525iT 1994: 29 10a Anti- theft horn relay Anti-theft control module (below right side of rear seat) Anti-theft horn (rear right side of engine compartment) Anti-theft led Check control module (front power distribution box) Crash control module (front power distribution box) Drivers door handle switch Drivers door jamb switch Engine hood switch Exterior lights system Front power distribution box (rear left side of engine compartment) Fuse f18 15a Fuse f37 30a G200 (left footwell) G303 (underside of right rear seat) G304 (underside of left rear seat) General module (rear power distribution box) Hot at all times In-line fuse Left rear door jamb switch Lift gate lock switch (early production) On-board computer (center of dash) On-board computer horn relay (below left side of rear seat) Passengers door jamb switch Rear power distribution box (below left side of rear seat) Red Right rear door jamb switch Seat/mirror memory control module (underside of left front seat)
BODY COMPUTER Body Computer Wiring Diagrams for BMW 525iT 1994 List of elements for Body Computer Wiring Diagrams for BMW 525iT 1994: 49 15a Air conditioning system Anti-theft system Check ctrl reset Computer data lines system Dac line Diag Drive away protect sig Engine controls system Front power distribution box (rear left side of engine compartment) Fuel ga Fuse f1 15a Fuse f17 7.5a Fuse f20 10a G200 (left kickpanel) Gnd Gong t1 ctrl Gong t2 ctrl Hood tamper Horn rly ctrl Hot at all times Hot in accy, run and start Hot in run and start Independent vent ctrl Inj sig Instrument cluster system Interior lights system Lac line Nca On-board computer (center of dash) On-board computer horn relay On-board computer temp sensor (under left front bumper) Outside temp Power distribution system Pwr in Red Remote ctrl Reserve tank contact Spd sig Starting/charging system Telephone interface (below front of console Terminal 15 Terminal 30 Terminal 30h Terminal 58g Terminal r Warning system X335 X501
COMPUTER DATA LINES Computer Data Lines for BMW 525iT 1994 List of elements for Computer Data Lines for BMW 525iT 1994: 28 A/t Anti-theft control module (below left side of rear seat) B+ junction point Data link connector (rear left side of engine compartment) Double panel power sunroof control module (in roof panel) Electronic throttle control module (ads ii) (behind right footwell speaker grille) Engine control module (dme) (in e-box) Front power distribution box (rear left side of engine compartment) Fuse f28 15a G103 (rear right side of engine compartment) General module (in rear power distribution box) Generator Hot at all times Hot in run and start Instrument cluster Integrated climate regulation control module (ihkr/f3) (left side of right footwell) Jumper plug (front power distribution box) M/t On-board computer (center of dash) Red Remote locking receiver (near rear view mirror) Seat/mirror memory control module (underside of left front seat) Slip control module (abs/asc) (in e-box) Starter Starter imobilization relay (behind left footwell speaker grill) (late production) Starter relay (front power distribution box) Transmission control module (egs) (in e-box) Unloader relay terminal 61 (front power distribution box)
COOLING FAN Auxiliary Cooling Fan Wiring Diagram for BMW 525iT 1994 List of elements for Auxiliary Cooling Fan Wiring Diagram for BMW 525iT 1994: 17 (in power Auxiliary fan motor Compressor control Distribution box) Engine control module (in e-box) Front power distri- bution box Fuse 30a Fuse 7.5a G101 (right front of engine compartment) High speed relay (in left auxiliary Hot at all times Hot in run or start Integrated climate regulation control module (above center console) Normal speed relay Pressure switch (rear right headlight) Relay box) Temper- ature switch (right top of radiator) Electrical Box Fan Wiring Diagram for BMW 525iT 1994 List of elements for Electrical Box Fan Wiring Diagram for BMW 525iT 1994: 14 1995 vftc c Battery E-box fan (rear right side of engine compartment) Front power distribution box (rear left side of engine compartment) Fuel pump relay (in e-box) Fuse f17 7.5a G123 (rear right side of engine compartment) Hot in start and run Instrument cluster Nca Oil pressure switch (front of engine on coolant inlet) Oil warning ind Red Temperature switch (top rear of engine on coolant inlet)
CRUISE CONTROL Cruise Control Wiring Diagram for BMW 525iT 1994 List of elements for Cruise Control Wiring Diagram for BMW 525iT 1994: 30 (front of gear shift selector) Automatic transmission range switch Brake light switch (on brake pedal) Check control module Clutch switch (clutch pedal support bracket) Cruise control actuator (front left side of engine comp.) Cruise control module (left front of i/p) Cruise control switch Decelerate/ set Exterior lights system Front power distribution box (rear left side of engine comp.) Fuse f1 15a Fuse f17 7.5a G101 (right side G202 (left Hot in acc, run and start Hot in run and start Instrument cluster Nca Normal Of engine comp.) Off Resume Set accelerate/ Side of i/p) Transmission system W/ egs W/o egs X19 X502
DEFOGGERS Defogger Wiring Diagram for BMW 525iT 1994 List of elements for Defogger Wiring Diagram for BMW 525iT 1994: 20 Antenna amplifier (in upper left "c" pillar) Anti-theft control module (below left side of rear seat) Diversity (in upper left "c" pillar) Fuse f35 30a G303 (below right rear seat) Hifi amplifier Hot at all times Integrated climate regulation control module (ihkr/f3) (left side of right footwell) Nca Radio Rear defogger i Rear defogger relay (in rear power distribution box) Rear defogger/ antenna Rear power distribution box (below left side of rear seat) Starting/charging system Suppression filter (in upper right "c" pillar) W/ 3- antenna- diversity W/ 3-antenna- diversity W/o 3- antenna- diversity W/o 3-antenna- diversity
EXTERIOR LIGHTS Exterior Light Wiring Diagram, Canada (1 of 3) for BMW 525iT 1994 List of elements for Exterior Light Wiring Diagram, Canada (1 of 3) for BMW 525iT 1994: 61 (not used) (right side of engine compt.) Brake light switch (brake pedal support bracket) Brake pedal status Check control module (front power distribution box) Daat line Data line Data link to ccm Daytime running lights coding diode (left side of dash) Fog light signal Fog lights power Front power distribution box (left rear side of engine compt.) Fuse f1 15a Fuse f15 7.5a Fuse f2 7.5a Fuse f4 7.5a Fuse f5 10a G101 G202 (left side of i/p) Ground Head Headlights signal Headlights system High beam light power High beam signal High level stop light power Hot at all times Hot in accy, run and start Hot in run and start Instrument cluster system Interior lights system Lac Lamp control module (front power distribution box) Left brake light power Left fog light power Left low beam power Left park light power Left park light relay (left side of dash) Left park light signal Left tail light power Left tail light signal Lft license plate light power Light switch Line data Off On-board computer (center of dash) line Park Park lights signal Red Right brake light power Right fog light power Right low beam power Right park light power Right park light signal Right park light/license plate light relay (left side of dash) Right tail light power Right tail light signal Rt license plate light power X18 X19 X501 Exterior Light Wiring Diagram, Canada (2 of 3) for BMW 525iT 1994 List of elements for Exterior Light Wiring Diagram, Canada (2 of 3) for BMW 525iT 1994: 36 G100 (front left side of engine compt) G100 (left front side of engine compt.) G101 (right front side of engine compt., ahead of wheel well) G202 (left side of i/p) G303 (below right front seat) G303 (below right rear seat) G306 (underside of rear seat) High level stop light Instrument cluster Left brake light Left front auxiliary turn light (1995 525it/ 530it only) Left front light assembly Left front marker light Left front turn light Left license plate light Left park light Left rear light assembly Left rear side marker light Left rear turn light Left tail light Left turn indicator Nca Right brake light Right front auxiliary turn light (1995 525it/ 530it only) Right front light assembly Right front marker light Right front turn light Right license plate light Right park light Right rear light assembly Right rear side marker light Right rear turn light Right tail light Right turn indicator X17 X502 Exterior Light Wiring Diagram, Canada (3 of 3) for BMW 525iT 1994 List of elements for Exterior Light Wiring Diagram, Canada (3 of 3) for BMW 525iT 1994: 39 (control module) (electrochromic) (not used) A/t Anti-theft system Automatic transmission range switch (front of gearshift selector) Back up light switch (below center console) Combination switch Crash control module (front power distribution box) Crash information Crash signal Front power distribution box (left rear side of engine compt.) Fuse f12 15a Fuse f3 7.5a Fuse f6 15a G101 (right side of engine compt.) G202 (left side of i/p) G303 (below right rear seat) General module (rear power distribution box) Hazard flasher relay (front power distribution box) Hazard switch Headlights system Hot at all times Hot in run and start Inertia switch (below left side of rear seat) Interior lights system Left Left back up light Left trunk light assembly M/t Memory system Mirrors system Nca Off Right Right back up light Right trunk light assembly Turn signal switch X253 Exterior Light Wiring Diagram, USA (1 of 3) for BMW 525iT 1994 List of elements for Exterior Light Wiring Diagram, USA (1 of 3) for BMW 525iT 1994: 53 (not used) Brake light switch (brake pedal support bracket) Brake pedal status Check control module (front power distribution box) Daat line Data line Data link to ccm Fog light signal Fog lights power Front power distribution box (left rear side of engine compt.) Fuse f1 15a Fuse f15 7.5a Fuse f4 7.5a Fuse f5 10a G202 (left side of i/p) Ground Head Headlights signal Headlights system High beam light power High beam signal High level stop light power Hot at all times Hot in accy, run and start Instrument cluster system Interior lights system Lamp control module (front power distribution box) Left brake light power Left fog light power Left low beam power Left park light power Left park light signal Left tail light power Left tail light signal Lft license plate light power Light switch Line data Off On-board computer (center of dash) Park Park lights signal Red Right brake light power Right fog light power Right low beam power Right park light power Right park light signal Right tail light power Right tail light signal Rt license plate light power X18 X19 X501 Exterior Light Wiring Diagram, USA (2 of 3) for BMW 525iT 1994 List of elements for Exterior Light Wiring Diagram, USA (2 of 3) for BMW 525iT 1994: 36 G100 (front left side of engine compt) G100 (left front side of engine compt.) G101 (right front side of engine compt., ahead of wheel well) G202 (left side of i/p) G303 (below right front seat) G303 (below right rear seat) G306 (underside of rear seat) High level stop light Instrument cluster Left brake light Left front auxiliary turn light (1995 525it/ 530it only) Left front light assembly Left front marker light Left front turn light Left license plate light Left park light Left rear light assembly Left rear side marker light Left rear turn light Left tail light Left turn indicator Nca Right brake light Right front auxiliary turn light (1995 525it/ 530it only) Right front light assembly Right front marker light Right front turn light Right license plate light Right park light Right rear light assembly Right rear side marker light Right rear turn light Right tail light Right turn indicator X17 X502 Exterior Light Wiring Diagram, USA (3 of 3) for BMW 525iT 1994 List of elements for Exterior Light Wiring Diagram, USA (3 of 3) for BMW 525iT 1994: 39 (control module) (electrochromic) (not used) A/t Anti-theft system Automatic transmission range switch (front of gearshift selector) Back up light switch (below center console) Combination switch Crash control module (front power distribution box) Crash information Crash signal Front power distribution box (left rear side of engine compt.) Fuse f12 15a Fuse f3 7.5a Fuse f6 15a G101 (right side of engine compt.) G202 (left side of i/p) G303 (below right rear seat) General module (rear power distribution box) Hazard flasher relay (front power distribution box) Hazard switch Headlights system Hot at all times Hot in run and start Inertia switch (below left side of rear seat) Interior lights system Left Left back up light Left trunk light assembly M/t Memory system Mirrors system Nca Off Right Right back up light Right trunk light assembly Turn signal switch X253
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 6) for BMW 525iT 1994 List of elements for Ground Distribution Wiring Diagram (1 of 6) for BMW 525iT 1994: 36 525i/t Anti-theft control module Auxiliary fan motor Auxiliary water pump relay (530i/540i) Blower relay Brake light switch Combination switch Crash control module Dimmer Ex 525i/t Fog light switch G101 (right front side of engine compartment ahead of wheelwell) G101 (right side of engine compartment) G303 (below right rear seat) General module Hazard flasher relay Headlight/ foglight cleaning module (canada) Ignition switch Left front door jamb switch Left park light relay (canada) Left rear door jamb switch Left rear window limit switch Left washer jet heater Light switch Light switch (canada) Pressure switch Remote locking receiver Right park/license light relay (canada) Right washer jet heater Slip control module (abs) Slip control module (abs/asc) Starter relay (early production) Temperature switch Unloader relay terminal Unloader relay terminal r Washer pump relay (canada) Ground Distribution Wiring Diagram (2 of 6) for BMW 525iT 1994 List of elements for Ground Distribution Wiring Diagram (2 of 6) for BMW 525iT 1994: 47 525it/530it Abs hydraulic unit Blower motor Check control module Engine control module (dme) Engine hood switch (dwa) Ex 525it/530it From c g303 (diagram 4 of 6) From g303 (diagram 4 of 6) Front console window switch assembly Fuel pump G100 (front left side of engine compartment) G103 (right rear of engine compartment) (525i/t) G202 (left side of i/p) G303 (below right rear seat) (ex 525it/530it) Heated oxygen sensor High level stop light Ihkr/f3 control panel Integrated climate regulation control module (ihkr/f3) Left front door handle switch Left front seat belt switch (late production) Left front window limit switch Left front window monitoring switch (dwa) Memory mirrors control switch Nca Not used Program switch Rear window washer pump Right front front seatback heater Right front seat belt switch Right front seat control switch Right front seat heater Right front seat heater switch Right front seat lumbar support switch (canada) Right front thigh support switch (w/ sport seat) Right rear interior light Right side memory mirror Right side mirror Seat occupancy detector (late production) Shield Suppression filter Transmission control module (egs) Trunk lid light W/ memory seats W/ sport seat W/o memory seats Washer fluid level switch Ground Distribution Wiring Diagram (3 of 6) for BMW 525iT 1994 List of elements for Ground Distribution Wiring Diagram (3 of 6) for BMW 525iT 1994: 40 Cd changer Double panel power sunroof control module (525it/530it) Engine control module (dme) From left rear light assembly (diagram 5 of 6) Front dome/ map light assembly G125 (front of engine) (525i) G303 (below right rear seat) G303 (below right rear seat) (525it) General module (525it/530it) Hifi amplifier Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Inertia switch Left back-up light Left license light Left makeup mirror switch Left rear interior light Left trunk light Left trunk light assembly Lift gate motor Lift gate switch Nca Radio Rear window motor Rear window opening switch Relay module Resistor Right back-up light Right license light Right makeup mirror switch Right trunk light Sunroof position switch Sunroof switch Sunroof switch (525it/530it) Trunk lid open warning relay Wiper relay Ground Distribution Wiring Diagram (4 of 6) for BMW 525iT 1994 List of elements for Ground Distribution Wiring Diagram (4 of 6) for BMW 525iT 1994: 49 (diagram 2 of 6) Anti- theft horn Asc switch Central locking trunk lid motor relay Charging socket Chime module Door lock heater Electric steering column adjustment relay Front cigar lighter Front cigar lighter light Front console window switch assembly Fuel pump G202 (left side of i/p) G303 (below right rear seat) (525it/530it) Hazard switch High level stop light Left front seat belt switch (early production) Left front seat control switch (w/o memory seats) Left front seat heater Left front seat heater switch Left front seat lumbar switch Left front seatback heater switch Left front thigh support switch (w/o memory seats) Left side memory mirror Left side mirror Mirror control switch Mixing actuator lights (early production) Nca Rear window wiper motor Rear wiper/ washer interval control module Right back-up light Right license light Right rear interior light Right trunk light Right trunk light assembly Seat/ mirror memory control module Steering column position switch Suppression filter To right front seat heater (diagram 2 of 6) To right side mirror Transmission position indicator light Transmission range selector light Trunk lid light W/ memory mirror only W/ memory seats Wheel camber control module Window motor relay Wiper motor Wiper/ washer switch Ground Distribution Wiring Diagram (5 of 6) for BMW 525iT 1994 List of elements for Ground Distribution Wiring Diagram (5 of 6) for BMW 525iT 1994: 60 525it/530it Anti- theft control module Auxiliary fan motor Auxiliary water pump Brake fluid level switch Check control module Cruise control actuator Cruise control module Ex 525it/530it Fuel level sensor G100 (left front side of engine compartment) G101 (right front side of engine compartment ahead of wheel well) G202 (left side of i/p) G303 (below right rear seat) Headlight/ foglight cleaning module (sra) Instrument cluster Lamp control module Left brake light Left fog light Left front light assembly Left front marker light Left front turn light Left high beam light Left horn Left low beam light Left park light Left rear light assembly Left rear side marker light Left rear turn light Left tail light Nca On-board computer Pressure sensor/ plunger Rear wiper/ washer fluid level switch Right brake light Right fog light Right front door jamb switch Right front light assembly Right front marker light Right front seat belt switch (late production) Right front turn light Right front window limit switch Right front window monitoring switch (dwa) Right high beam light Right horn Right low beam light Right park light Right rear door jamb switch Right rear light assembly Right rear quarter window switch (dma) Right rear side marker light Right rear turn light Right rear window limit switch Right tail light Slip control module (abs/asc) Starter immobilization relay (late production) Telephone interface Telephone transceiver Throttle flap heater To ground g303 (diagram 3 of 6) Ground Distribution Wiring Diagram (6 of 6) for BMW 525iT 1994 List of elements for Ground Distribution Wiring Diagram (6 of 6) for BMW 525iT 1994: 45 (525i/t) Check control module Crankshaft position/rpm sensor shield Cyl 1 ignition coil Cyl 1-4 heated oxygen sensor Cyl 2 ignition coil Cyl 3 ignition coil Cyl 4 ignition coil Cyl 5 ignition coil Cyl 5-8 heated oxygen sensor Cyl 6 ignition coil Cyl 7 ignition coil Cyl 8 ignition coil Data link connector Electronic throttle control module (ads ii) Engine control module (dme) G101 (front of right front fender) G103 (rear right side of engine compartment) G104 (near e-box, left) (530i/t, 540i) G202 (left side of i/p) G300 (underside of left front seat) G303 (underside of right rear seat) Glove box light switch Hall effect camshaft sensor Heated oxygen sensor Heated oxygen sensor shield Hot film air mass meter Ignition coils shield Mass air flow sensor Nca Oil level sensor Oil pressure switch On-board computer Park heating/ ventilation relay box Program switch Radio anti- theft switch (dwa) Resistor Seat/ mirror memory control module Secondary air pump Secondary air pump relay Temperature switch Trans- mission control module (ags) Trans- mission control module (egs) Transmission control module (ags) Transmission control module (egs)
HEADLIGHTS Headlight Wiring Diagram, with DRL (1 of 2) for BMW 525iT 1994 List of elements for Headlight Wiring Diagram, with DRL (1 of 2) for BMW 525iT 1994: 48 Combination high beam switch Flash Fog light indicator Fog light signal Fog light switch Fog lights power Front power distribution box (left rear side of engine compt.) Front power distribution box (rear left side of engine compartment) Fuse f13 7.5a Fuse f14 7.5a Fuse f2 7.5a Fuse f3 7.5a Fuse f6 15a Fuse f7 15a G100 (left front side of engine compartment) G100 (left front side of engine compt.) G101 (right front side of engine compartment) G101 (right front side of engine compt.) G202 (left side of i/p) Head Headlights signal High High beam indicator High beam light power High beam signal Hot at all times Hot in run and start Instrument cluster Interior lights system Lamp control module (front power distribution box) Left fog light Left fog light power Left high beam light Left low beam power Light switch Nca Normal Off Park Red Right fog light Right fog light power Right high beam light Right low beam power Switch X16 X17 X502 Headlight Wiring Diagram, with DRL (2 of 2) for BMW 525iT 1994 List of elements for Headlight Wiring Diagram, with DRL (2 of 2) for BMW 525iT 1994: 22 Anti-theft system (anti-theft control module) Crash control module (front power distribution box) Crash information Exterior lights system Fog lights on input Front power distribution box (rear left side of engine compartment) Fuse f10 7.5a Fuse f11 7.5a G100 (left front side of engine compt.) G101 (right front side of engine compt.) G101 (right side of engine compt.) G202 (left side of i/p) G303 (below right rear seat) General module (rear power distribution box) Hazard flasher relay (front power distribution box) Hazard switch Inertia switch (below left side of rear seat) Inertia switch input Left low beam light Right low beam light X253 X255 Headlight Wiring Diagram, without DRL (1 of 2) for BMW 525iT 1994 List of elements for Headlight Wiring Diagram, without DRL (1 of 2) for BMW 525iT 1994: 48 Combination high beam switch Flash Fog light indicator Fog light signal Fog light switch Fog lights power Front power distribution box (left rear side of engine compt.) Front power distribution box (rear left side of engine compartment) Fuse f13 7.5a Fuse f14 7.5a Fuse f2 7.5a Fuse f3 7.5a Fuse f6 15a Fuse f7 15a G100 (left front side of engine compartment) G100 (left front side of engine compt.) G101 (right front side of engine compartment) G101 (right front side of engine compt.) G202 (left side of i/p) Head Headlights signal High High beam indicator High beam light power High beam signal Hot at all times Hot in run and start Instrument cluster Interior lights system Lamp control module (front power distribution box) Left fog light Left fog light power Left high beam light Left low beam power Light switch Nca Normal Off Park Red Right fog light Right fog light power Right high beam light Right low beam power Switch X16 X17 X502 Headlight Wiring Diagram, without DRL (2 of 2) for BMW 525iT 1994 List of elements for Headlight Wiring Diagram, without DRL (2 of 2) for BMW 525iT 1994: 22 Anti-theft system (anti-theft control module) Crash control module (front power distribution box) Crash information Exterior lights system Fog lights on input Front power distribution box (rear left side of engine compartment) Fuse f10 7.5a Fuse f11 7.5a G100 (left front side of engine compt.) G101 (right front side of engine compt.) G101 (right side of engine compt.) G202 (left side of i/p) G303 (below right rear seat) General module (rear power distribution box) Hazard flasher relay (front power distribution box) Hazard switch Inertia switch (below left side of rear seat) Inertia switch input Left low beam light Right low beam light X253 X255
HORN Horn Wiring Diagram for BMW 525iT 1994 List of elements for Horn Wiring Diagram for BMW 525iT 1994: 18 (left front (right front side of engine Acc Front power distribution box (left rear side of engine compt.) Fuse f9 15a G100 side of engine compt.) G101 compt., ahead of wheel well) Horn relay (front power distribution box) Horn switch Hot at all times Ignition switch Left horn Off Power distribution Right horn Run Start X168
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for BMW 525iT 1994 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for BMW 525iT 1994: 69 A10 A12 A13 A15 A16 A17 A18 A20 A21 A22 A23 A24 A25 A26 Abs ind Acc Air bag ind Anti-lock brakes system Anti-theft system Asc ind B13 B14 B15 Brake fluid level switch (left side of engine compt) Brake warning ind C10 Charge ind Check engine ind Conn a Conn b Conn c D11 D14 D23 D25 D26 Engine controls system Fog lt ind Front power distribution box (rear left side of engine compartment) Fuel economy gauge Fuel gauge Fuse f1 15a Fuse f17 7.5a Fuse f20 10a G100 (front left side of engine compt) G200 (left footwell) Ground Headlights system High beam ind Hot at all times Hot in run and start Ignition switch Illum (3 used) Instrument cluster Left turn ind Lock Nca Oil ind Oil pressure switch (front of engine) Park brake switch Reserve ind Right turn ind Run Speedometer Start Starting/charging system Tach Temp gauge Vehicle speed sensor (under rear of vehicle) Instrument Cluster Wiring Diagram (2 of 2) for BMW 525iT 1994 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for BMW 525iT 1994: 35 (left footwell) g200 525i,530i, 540i 525it, 530it Check control module (front power distribution box) Data link connector (near e-box left) Drivers door jamb switch Drivers seat belt switch Engine controls system Engine coolant level switch (top center of engine) Engine coolant temp sensor (front of engine) Exterior lights system Fuel level sensor (right side of luggage compartment) G100 (front left side of engine compt) G103 (rear right side of engine compartment) G200 (left footwell) G203 (right footwell) G303 (underside of right rear seat) G304 (below left side of rear seat) G306 (underside of rear seat) General module (rear power distribution box) Ground Headlights system Inst clstr conn d Interior lights system Left front brake pad sensor Multi-function clock Nca Oil level sensor (left side of engine) On-board computer (center of dash) On-board computer temp sensor (under left front bumper) Rear wiper/ washer fluid level switch (right side of luggage compt) Right rear brake pad sensor Transmission system Warning system Washer fluid level switch (front right side of engine compt)
INTERIOR LIGHTS Interior Light Wiring Diagram (1 of 2) for BMW 525iT 1994 List of elements for Interior Light Wiring Diagram (1 of 2) for BMW 525iT 1994: 72 (3) Asc switch Asc switch (535i only) Canada Canada only Check control module (front power distribution box) Dimmer Exterior lights system (turn/hazard lights) Fog light switch Front cigar lighter light Front power distribution box (left rear side of engine compartment) Fuse f4 7.5a Fuse f5 10a G101 (right side of engine compartment) G202 (left side of i/p) G303 (below right rear seat) General module (rear power distribution box) Hazard switch Head Hot at all times Ihkr/f3 control panel Ihkr/f3 switching unit Instrument cluster Instrument illumination Integrated climate regulation control module (between front footwells) Lamp control module (front power distribution box) Left front lumbar support switch (not illuminated in u.s.) Left front seat heater switch Left front thigh support switch (m5 only) Light switch Light switch on signal Lights on signal Off On-board computer (center of dash) Park Park lights signal Program switch (w/egs) Radio Right front lumbar support switch (not illuminated in u.s.) Right front seat heater switch Right front thigh support switch (m5 only) Right park light/license plate light relay (left side of dash) Sunroof switch Transmission position indicator light U.s.a. Under hood light Under hood light switch X1127 X1193 X12 X17 X18126 X18151 X18154 X18155 X19 X255 X501 X502 X503 X504 X516 X521 X532 X643 X651 X652 X658 X659 X8503 X880 X881 Interior Light Wiring Diagram (2 of 2) for BMW 525iT 1994 List of elements for Interior Light Wiring Diagram (2 of 2) for BMW 525iT 1994: 46 Anti- theft system Auto Check control module (left rear side of engine compartment) Crash signal Door open signal Driver's door jamb switch Driver's door open Driver's door status Driver's makeup mirror light Driver's makeup mirror switch Front dome light/ map reading assembly Front power distribution box (left rear side of engine compartment) Fuse f18 15a Fuse f21 10a Fuse f32 7.5a G202 (left side of i/p) G303 (below right rear seat) General module (below left rear seat) Glove box light Glove box light switch Hot at all times Hot in accy, run and start Inertia switch (below left rear seat) Interior lights control Left rear door jamb switch Left rear interior light Left trunk light assembly Manual Off Passenger's door jamb switch Passenger's door open Passenger's makeup mirror light Passenger's makeup mirror switch Rear door open Relay module (below left rear seat) Right rear door jamb switch Right rear interior light Right trunk light assembly Seat/ mirror memory control module (below left front seat) Trunk lid light Trunk lid switch (left side of trunk lid) X18 X19 X253 X255 X648
MEMORY SYSTEMS Memory Mirrors Wiring Diagram for BMW 525iT 1994 List of elements for Memory Mirrors Wiring Diagram for BMW 525iT 1994: 36 Anti-theft system Data link connector (near e-box left) Diag Drivers door jamb switch Drivers door status Drivers side memory mirror Front power distribution box (rear left side of engine compartment) Fuse f12 15a Fuse f42 30a G200 (left footwell) G200 (left kickpanel) G300 (below left front seat) G303 (underside of right rear seat) G304 (below left side of rear seat) Gnd Hot at all times Hot in run and start L mir Memory mirrors control switch Mir adjust-l/r Mir adjust-l/r, u/d Mir mtr Mir mtr-horiz/vert Mir mtr-vert Mir select sig Off Passengers side memory mirror Postn pot Pot conn Reverse gear sig Rt mir Seat/mirror memory control module (underside of left front seat) Terminal 30 Transmission system X18322 X18323 Memory Seat Wiring Diagram for BMW 525iT 1994 List of elements for Memory Seat Wiring Diagram for BMW 525iT 1994: 53 Back Backrest back Backrest forward Drivers headrest motor (drivers seatback) Drivers memory seat adjustment switch Drivers seat cushion tilt motor (underside of left front seat) Drivers seat height motor (underside of left front seat) Drivers seat movement motor (underside of left front seat) Drivers seatback recliner motor (underside of left front seat) Fnt Front power distribution box (rear left side of engine compartment) Fuse f16 30a Fuse f18 15a Gnd Headrest down Headrest postn sig Headrest potentiometer (drivers seatback) Headrest switch Headrest up Height down Height up Hot in accy, run and start Hot in run and start Illum + Illum - Memory seat mirrors switch Off Pot volt Seat back postn sig Seat cushion movement potentiometer (left front seatback) Seat cushion rear height potentiometer (left front seatback) Seat cushion sig Seat cushion tilt switch Seat height postn sig Seat height potentiometer (underside of left front seat) Seat height switch Seat movement back Seat position switch Seat rear height sig Seat/mirror memory control module (underside of left front seat) Seatback potentiometer (left front seatback) Seatback switch Sw led + Sw led - Sw sig Terminal 15 Terminal r Tilt down Tilt up Volt X18319 X18320 X18321
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 5) for BMW 525iT 1994 List of elements for Power Distribution Wiring Diagram (1 of 5) for BMW 525iT 1994: 60 (diagram 3 of 5) Acc B+ distributor B+ jump start junction point (rear left side of engine compartment) B+ junction point (rear left side of engine compartment) Battery Blower relay Data link connector Engine control module (dme) Engine control module relay (525) Front power distribution box (rear left side of engine compartment) Fuel pump Fuel pump relay Fuse f23 15a Fuse f47 10a Fusible link Fusible link 80a Generator Horn relay Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Ignition switch Instrument cluster Lock Not used On-board computer horn relay Rear power distribution box (below left side of rear seat) Red Run Seat occupancy detector (late production) Start Starter Starter relay To fuse f1 (diagram 4 of 5) To fuse f17 (diagram 5 of 5) To fuse f2 (diagram 5 of 5) To fuse f24 (diagram 5 of 5) To fuse f28 (diagram 5 of 5) To fuse f29 (diagram 5 of 5) To fuse f3 (diagram 5 of 5) To fuse f30 (diagram 3 of 5) To fuse f32 (diagram 3 of 5) To fuse f33 (diagram 3 of 5) To fuse f34 (diagram 3 of 5) To fuse f35 (diagram 3 of 5) To fuse f36 (diagram 3 of 5) To fuse f37 (diagram 3 of 5) To fuse f40 (diagram 3 of 5) To fuse f41 (diagram 3 of 5) To fuse f42 (diagram 3 of 5) To fuse f43 To fuse f44 (diagram 3 of 5) To fuse f9 (diagram 2 of 5) to fuse f5 (diagram 2 of 5) Transmission control module (egs) Unloader relay terminal 15 Unloader relay terminal r Power Distribution Wiring Diagram (2 of 5) for BMW 525iT 1994 List of elements for Power Distribution Wiring Diagram (2 of 5) for BMW 525iT 1994: 62 Abs hydraulic unit Auxiliary water pump relay Blower relay Canada Charging socket Check control module Chime module Compressor control relay Crash control module From front power distribution box (diagram 1 of 5) Front cigar lighter Front dome/ map light assembly Front power distribution box (rear left side of engine compartment) Fuse f10 7.5a Fuse f11 7.5a Fuse f13 7.5a Fuse f14 7.5a Fuse f20 10a Fuse f21 10a Fuse f22 30a Fuse f25 30a Fuse f26 30a Fuse f4 7.5a Fuse f5 7.5a Fuse f6 15a Fuse f7 15a Fuse f9 15a G202 (left side of i/p) Hazard flasher relay Headlight/ foglight cleaning module (sra) (canada) High speed relay Horn relay Ihkr/f3 control panel Instrument cluster Integrated climate regulation control module (ihkr/f3) Lamp control module Left high beam headlight Left low beam headlight Left rear interior light Light switch Nca Normal speed relay On-board computer Park heating ventilation relay box Park light relay (canada) Red Right high beam headlight Right low beam headlight Right park light/ license plate light relay Right rear interior light Slip control module To fuse 19 (diagram 3 of 5) To fuse f15 (diagram 4 of 5) To fuse f16 (diagram 4 of 5) To fuse f55 (diagram 5 of 5) To fuse f56 (diagram 5 of 5) Trunk lid light Trunk lid switch Unloader relay terminal Unloader relay terminal r Usa Water valve assembly Power Distribution Wiring Diagram (3 of 5) for BMW 525iT 1994 List of elements for Power Distribution Wiring Diagram (3 of 5) for BMW 525iT 1994: 52 (diagram 1 of 5) Anti-theft control module Blower switch Cd changer Central locking trunk lid motor relay Double panel power sunroof control module Electric power protection relay Electric steering column adjustment relay From blower relay (diagram 2 of 5) From fusible link From fusible link (diagram 1 of 5) Front power distribution box (rear left side of engine compartment) Fuse f19 30a Fuse f27 7.5a Fuse f30 10a Fuse f32 7.5a Fuse f33 7.5a Fuse f34 30a Fuse f35 30a Fuse f36 30a Fuse f37 30a Fuse f40 7.5a Fuse f41 30a Fuse f42 30a Fuse f43 30a Fuse f44 30a Hifi amplifier Integrated climate regulation control module Left door lock motor Left door lock switch Left seat control switch Left seat thigh support switch Liftgate lock switch Not used Radio Rear defogger relay Rear power distribution box (below left side of rear seat) Rear wiper/ washer interval control module Red Relay module Right door lock motor Right door lock switch Right seat control switch Right seat thigh support switch Seat/mirror memory control module Telephone transceiver Trunk lock motor W/ memory seats W/ thight support only W/o memory seats Window motor relay Wiper relay Power Distribution Wiring Diagram (4 of 5) for BMW 525iT 1994 List of elements for Power Distribution Wiring Diagram (4 of 5) for BMW 525iT 1994: 46 (diagram 2 of 5) Anti-theft control module Automatic transmission range switch Back-up light switch (m/t) Brake light switch Check control module Cruise control module Cruise control switch From ignition switch (diagram 1 of 5) From unloader v relay terminal 15 (diagram 2 of 5) From unloader w relay terminal r Front power distribution box (rear left side of engine compartment) Fuse f1 15a Fuse f12 15a Fuse f15 7.5a Fuse f16 30a Fuse f18 15a Glove box light Instrument cluster Jet heater thermoswitch Lamp control module Left makeup mirror light Left rear interior light Left seat heater switch Left seat lumbar switch Left side memory mirror Mirror control switch On-board computer Radio Rear window wiper relay 2 Rear wiper/ washer interval control module Remote locking receiver Right makeup mirror light Right rear interior light Right seat heater switch Right side memory mirror Seat/mirror memory control module Telephone interface Telephone transceiver Uncoupling diode (early production) W/ egs W/ memory W/ memory only W/o egs W/o memory Wiper relay Power Distribution Wiring Diagram (5 of 5) for BMW 525iT 1994 List of elements for Power Distribution Wiring Diagram (5 of 5) for BMW 525iT 1994: 35 (diagram 1 of 5) Anti-theft control module (dwa) Automatic transmission range switch (w/ egs) Auxiliary relay box (left side of engine compartment) Auxiliary water pump relay Combination switch Compressor control relay Data link connector Daytime running lights coding diode (canada) Electronic throttle control module (ads ii) From front power distribution box (diagram 2 of 5) From ignition switch (diagram 1 of 5) From ignition switch r Front power distribution box (rear left side of engine compartment) Fuse f17 7.5a Fuse f2 7.5a Fuse f24 10a Fuse f28 15a Fuse f29 7.5a Fuse f3 7.5a Fuse f55 50a Fuse f56 25a General module High speed relay Instrument cluster Lamp control module (canada) Light switch Normal speed relay Not used On-board computer Red Starter immobilization relay (late production) Unloader relay terminal 61 Washer pump Wheel camber control module (early production)
POWER DOOR LOCKS Power Door Lock Wiring Diagram for BMW 525iT 1994 List of elements for Power Door Lock Wiring Diagram for BMW 525iT 1994: 46 525i, 530i, 540i 525it, 530it Anti-theft system Central locking trunk lid motor relay (right side of luggage compt) Conn 253 Conn 255 Conn 332 Crash info Crash sig Data line Drivers door lk mtr Drivers door lock motor Electric power protection relay (in rear power distribution box) Fuse f32 7.5a Fuse f33 7.5a Fuse f37 30a Fuse f44 20a G303 (below right side of rear seat) G304 (below left side of rear seat) Gas filler lock motor General module (in rear power distribution box) Hot at all times Inertia switch (below left side of rear seat) L rear wdo mtr ctrl Left rear door lock motor Lift gate limit switch Lift gate lock switch Lift gate motor Lk mtrs ctrl Lk mtrs ctrl (close) Lk mtrs ctrl (open) Not used Passengers door lock motor Passngr door lk mtr Protect rly ctrl Rear power distribution box (below left side of rear seat) Rear window limit switch (on liftgate behind trim panel) Rear window motor Relay module (in rear power distribution box) Right rear door lock motor Sunroof mtr ctrl Theft sys ctrl mod Trunk lock motor Unlk door lk mtrs sig Unlk trunk lk mtr sig Window motor relay (right side of luggage compartment)
POWER MIRRORS Electrochromic Mirror Wiring Diagram for BMW 525iT 1994 List of elements for Electrochromic Mirror Wiring Diagram for BMW 525iT 1994: 11 Automatic transmission range switch (front of gearshift selector) Backup light switch (below center console) Electrochromic rear view mirror Front power distribution box (rear left side of engine compartment) Fuse f12 15a Fuse f18 15a G303 (below right rear seat) Hot in accy, run and start Hot in run and start W/ egs W/o egs Power Mirror Wiring Diagram for BMW 525iT 1994 List of elements for Power Mirror Wiring Diagram for BMW 525iT 1994: 14 Down Driver's Driver's side mirror Front power distribution box (rear left side of engine compartment) Fuse f12 15a G202 (left side of i/p) G303 (below right rear seat) Hot in run and start Left Mirror control switch Nca Passenger's Passenger's side mirror Right
POWER SEATS Heated Seats Wiring Diagram for BMW 525iT 1994 List of elements for Heated Seats Wiring Diagram for BMW 525iT 1994: 17 (w/memory) Driver's seat heater (underside of left front seat) Driver's seat, seat heater switch Driver's seatback heater (in lower left front seatback) Front power distribution box (rear left side of engine compartment) Fuse f16 30a G202 (left side of i/p) G303 (below right rear seat) Hot in run and start Interior lights system Max Memory systems (w/memory seats) Min Passenger's seat heater (underside of left front seat) Passenger's seat, seat heater switch Passenger's seatback heater (in lower right front seatback) Test Lumbar Wiring Diagram for BMW 525iT 1994 List of elements for Lumbar Wiring Diagram for BMW 525iT 1994: 7 Drivers seat lumbar support motor (under left front seat) Drivers seat lumbar switch Front power distribution box (rear left side of engine compartment) Fuse f16 30a G200 (left footwell) Hot in run and start Interior lights system Power Seats Wiring Diagram for BMW 525iT 1994 List of elements for Power Seats Wiring Diagram for BMW 525iT 1994: 33 Back Cushion tilt Driver's headrest motor (in upper left front seatback) Driver's seat cushion tilt motor (under left front seat) Driver's seat height motor (under left front seat) Driver's seat movement motor (under left front seat) Driver's seat, seat control switch Driver's seatback recliner motor (under left front seat) Driver's thigh support motor (under left front seat) Driver's thigh support switch (w/sport seats only) Front Fuse f42 30a Fuse f43 30a Fwd G202 (left side of i/p) G303 (below left rear seat) Headrest Height Hot at all times Interior lights system Nca Passenger's headrest motor (in upper right front seatback) Passenger's seat cushion tilt motor (under right front seat) Passenger's seat height motor (under right front seat) Passenger's seat movement motor (under right front seat) Passenger's seat, seat control switch Passenger's seatback recliner motor (under right front seat) Passenger's thigh support motor (under right front seat) Passenger's thigh support switch (w/sport seats only) Position Rear power distribution box (below left side of rear seat) Rwd Seatback
POWER TOP/SUNROOF Sunroof Wiring Diagram, SHD for BMW 525iT 1994 List of elements for Sunroof Wiring Diagram, SHD for BMW 525iT 1994: 45 Anti-theft Anti-theft system Close Close sunrf Close sunrf lft Data line Driver's door lock switch Electric power protection relay (rear power distribution box) Front power distribution box (rear left side of engine compartment) Fuse f17 7.5a Fuse f32 7.5a Fuse f33 7.5a Fuse f37 30a G303 (below right rear seat) General module (rear power distribution box) Hot at all times Hot in run and start Interior lights system Lift close Lifted open or closed Lifted or fully open Lock front doors Nca Off Open sunrf slide Passenger's door lock switch Power Power windows system Prot rly cntrl Rear power distribution box (below left side of rear seat) Relay module (rear power distribution box) Slide open Slide open/ close Slide or fully open Sunrf mtr cntrl Sunrf position Sunroof motor (center of windshield header) Sunroof position switch Sunroof switch X253 X254 X255 X258 X259 X332 Sunroof Wiring Diagram, ZKE for BMW 525iT 1994 List of elements for Sunroof Wiring Diagram, ZKE for BMW 525iT 1994: 29 Control signal Data link connector (near e-box left) Diag Double panel power sunroof module (in roof panel) Double panel power sunroof sensor 1 (behind front of roof trim panel) Double panel power sunroof sensor 2 (in roof panel) Fuse f32 7.5a G304 (below left side of rear seat) General module (rear power distribution box) Ground Hot at all times Interior lights system Motor drive 1 double panel power sunroof (in roof panel) Motor drive 2 double panel power sunroof (in roof panel) Msd+ Nca Position contact Power Power windows system Rear power distribution box (below left side of rear seat) Relay module (rear power distribution box) Sunroof switch Switch Terminal 30 X253 X254 X258 X259 X332
POWER WINDOWS Power Window Wiring Diagram (1 of 2) for BMW 525iT 1994 List of elements for Power Window Wiring Diagram (1 of 2) for BMW 525iT 1994: 20 Conn 253 Conn 254 Conn 255 Conn 332 Door lock system Drivers window motor Electric power protection relay (in rear power distribution box) Front power distribution box (rear left side of engine compt) Fuse f17 7.5a Fuse f32 7.5a Fuse f37 30a G304 (below left side of rear seat) General module (in rear power distribution box) Hot at all times Hot in run and start Left rear window motor Passengers window motor Rear power distribution box (below left side of rear seat) Relay module (in rear power distribution box) Right rear window motor Power Window Wiring Diagram (2 of 2) for BMW 525iT 1994 List of elements for Power Window Wiring Diagram (2 of 2) for BMW 525iT 1994: 19 Child safety lock Close Drivers window limit switch Drivers window switch Front console window switch assembly G200 (left footwell) G303 (underside of rear seat) G303 (underside of right rear seat) G304 (below left side of rear seat) Left rear window limit switch Left rear window switch Not used Off Open Passengers window limit switch Passengers window switch Power tops system Right rear window limit switch Right rear window switch
RADIO Radio Wiring Diagrams for BMW 525iT 1994 List of elements for Radio Wiring Diagrams for BMW 525iT 1994: 34 10a 6.3a Antenna amplifier Body computer system Cd changer Cellular telephone Coax cable Front power distribution box (rear left side of engine compartment) Fuse f18 15a Fuse f36 30a G304 (below left rear seat) Hifi amplifier Hot at all times Hot in accy, run and start Instrument cluster system Interior lights system Left front high range speaker Left front low range speaker Left front midrange speaker Left rear high range speaker Left rear low range speaker Nca Power input Radio Rear power distribution box (below left side of rear seat) Right front high range speaker Right front low range speaker Right front midrange speaker Right rear high range speaker Right rear low range speaker X18126 X605 X606 X8075
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for BMW 525iT 1994 List of elements for Shift Interlock Wiring Diagram for BMW 525iT 1994: 24 Automatic transmission range switch (front of gearshift lever) B+ junction point Battery voltage Brake light switch (support bracket) Brake pedal position Front power distribution box (rear left side of engine compt.) Fuse f1 15a Fuse f17 7.5a G123 (right rear side of engine compt.) Gear range signal l1 Gear range signal l2 Gear range signal l3 Gear range signal l4 Ground Hot at all times Hot in accy, run and start Hot in run and start Instrument cluster system Nca Red Shift lock solenoid control Shift lock solenoid ground Shift-lock (front of gearshift selector) Transmission control module (e-box)
STARTING/CHARGING Charging Wiring Diagram for BMW 525iT 1994 List of elements for Charging Wiring Diagram for BMW 525iT 1994: 17 Alternator Anti-theft control module (dwa) B+ junction point (rear left side of engine compartment) Battery Charge ind Data link connector (near e-box left) Front power distribution box (rear left side of engine compartment) Fuse f17 7.5a Fuse f28 15a G101 (right side of engine compartment) Hot in run and start Instrument cluster Integrated climate regulation control module Rear defogger relay (below left side of rear seat) Red Slip control module (abs/asc) Unloader relay (rear left side of engine compartment) Starting Wiring Diagram, Early Production for BMW 525iT 1994 List of elements for Starting Wiring Diagram, Early Production for BMW 525iT 1994: 23 A/t Acc Automatic transmission range switch Battery Data link connector (rear left side of engine compartment) Front power distribution box (rear left side of engine compartment) Fuse f17 7.5a G101 (right side of engine compartment) General module Generator Hot at all times Hot in run and start Ignition switch Integrated climate regulation control module Jumper plug (rear left side of engine compartment) Lock M/t On-board computer Red Run Start Starter Starter relay (rear left side of engine compartment) Starting Wiring Diagram, Late Production for BMW 525iT 1994 List of elements for Starting Wiring Diagram, Late Production for BMW 525iT 1994: 21 Acc Automatic transmission range switch Battery Front power distribution box (rear left side of engine compartment) Fuse f17 7.5a G200 (left footwell) General module Generator Hot at all times Hot in run and start Ignition switch Integrated climate regulation control module Lock On-board computer Red Run Start Starter Starter imobilization relay (in front power distribution box) W/ egs W/o egs
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for BMW 525iT 1994 List of elements for Supplemental Restraint Wiring Diagram for BMW 525iT 1994: 43 (behind right (below left rear seat) (early prod 1994) (front harness, left rear of engine compt) (in rear harness, (left g200 (note: module connector is 30 pin) Abbf+ Abbf- Abf+ Abf- Acc Air bag indicator Ausf Behind left rear seat) Check control module (front power dist box) Contact rings Data link connector (near e-box left) Driver's airbag gas generator Driver's seat belt switch (in seat belt buckle) Fuse f47 10a G310 G310 (behind right rear seat) Gkbf Gkf Hot at all times Hot in accy. run and start Ignition switch Instrument cluster Kick panel) Nca Off Passenger's airbag gas generator Passenger's seat belt switch (in seat belt buckle) Rear power distribution box (behind left side of rear seat) Rear seat) Run Sbe Seat occupancy detector (late prod. 1994, all 1995) (under right front seat) Start Txd X16 X19
TRANSMISSION Transmission Wiring Diagram, 4 Speed with Overdrive for BMW 525iT 1994 List of elements for Transmission Wiring Diagram, 4 Speed with Overdrive for BMW 525iT 1994: 31 1991 only Automatic transmission range switch B+ junction point Band solenoid Brake light switch Check control module Computer data lines system Electronic transmission engine speed sensor Engine controls system Front power distribution box Fuse f1 15a Fuse f17 7.5a Ground Hot at all times Hot in accy, run and start Hot in run and start Hydraulic pressure regulator Instrument cluster Interior lights system Nca Oil temperature sensor Program switch Red Shift lock solenoid Solenoid valve 1 Solenoid valve 2 Torque converter clutch sol valve Transmission control module (egs) Transmission kickdown switch Transmission valve unit Transparent Transmission Wiring Diagram, 5 Speed with Overdrive for BMW 525iT 1994 List of elements for Transmission Wiring Diagram, 5 Speed with Overdrive for BMW 525iT 1994: 31 Anti-lock brakes system B+ junction point Brake light switch Clr Data link connector Engine controls system Front power distribution box Fuse f1 15a Fuse f17 7.5a Ground Hot at all times Hot in accy, run and start Hot in run and start Instrument cluster Instrument cluster system Kick- down switch Nca Oil temperature sensor Pressure regulator Program switch Red Shift lock solenoid Solenoid valve 1 Solenoid valve 2 Solenoid valve 3 Speed sensor shaft Speed sensor turbine Transmission control module (ags) Transmission range switch Transmission valve unit X8600
WARNING SYSTEMS Warning System Wiring Diagrams for BMW 525iT 1994 List of elements for Warning System Wiring Diagrams for BMW 525iT 1994: 14 Chime module (below left side of dash Front power distribution box (rear left side of engine compt.) Fuse f20 10a G202 (left side of i/p) Gong t1 control Gong t2 control Hot at all times Instrument cluster On-board computer (center console) Sound Tone signal x502 X501 X518 X522
WIPER/WASHER Jet Heater Wiring Diagram for BMW 525iT 1994 List of elements for Jet Heater Wiring Diagram for BMW 525iT 1994: 8 Front power distribution box (rear left side of engine compartment) Fuse f12 15a G101 (right front side of engine compartment, ahead of wheelwell) Hot in run and start Jet heater thermoswitch (front left side of engine compt.) Left washer jet heater (on underside of hood) Nca Right washer jet heater (on underside of hood) Rear Wiper/Washer Wiring Diagram for BMW 525iT 1994 List of elements for Rear Wiper/Washer Wiring Diagram for BMW 525iT 1994: 25 Fast Front power distribution box (rear left side of engine compartment) Fuse f18 15a Fuse f44 20a G200 (left footwell) G303 (underside of right rear seat) G304 (below left side of rear seat) General module (rear power distribution box) Hot at all times Hot in accy, run and start Int Int (rear) Intensive Nca Norm Off Rear power distribution box (below left side of rear seat) Rear window opening switch Rear window washer pump (right side of luggage compartment) Rear window wiper motor Rear wiper/washer interval control module (right side of luggage compartment) Relay module (rear power distribution box) Single wipe Single wipe (rear) Wiper/washer switch Wiper/Washer Wiring Diagram for BMW 525iT 1994 List of elements for Wiper/Washer Wiring Diagram for BMW 525iT 1994: 37 Data line Fast Front power distribution box (rear left side of engine compartment) Fuse f1 15a Fuse f24 10a Fuse f34 30a G202 (left side of i/p) G303 (below left rear seat) General module (rear power distribution box) Hot in accy, run and start Instrument cluster Int wiper Inter Nca Normal Off Park Rear power distribution box (below left side of rear seat) Relay module (rear power distribution box) Run Single Speed sig Stnd wiper Vehicle speed signal Wash Wash signl Washer pump (washer fluid reservoir) Wiper motor Wiper mtr Wiper relay (rear power distribution box) Wiper/washer switch Wipers run X253 X255 X258 X259 X502
