Diagram sections — 29 (55 total)
AIR CONDITIONING ANTI-LOCK BRAKES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING A/C Wiring Diagram, Auto A/C for Mercury Grand Marquis GS 1997 List of elements for A/C Wiring Diagram, Auto A/C for Mercury Grand Marquis GS 1997: 66 (engine harn, left rear of eng compt) s110 (engine harn, near right front fender) (i/p harn, behind center of i/p) (i/p harn, behind right side of i/p) s200 (i/p harn, behind top left side of i/p) (i/p harn, near data link conn (dlc) breakout) (i/p harn, near glove box lamp breakout) (not used) (top of engine, near fuel injector 1) A/c compressor clutch A/c clutch cycling pressure switch (right rear of engine compartment) A/c clutch diode A/c clutch out A/c cutout relay (in relay center) A/c high pressure cut out switch (right side of engine compartment) A/c plenum) Ambient temp input Ambient temperature sensor (center front of vehicle, on upper radiator support) Battery Blend door act Blend door actuator (behind right side of i/p, top of Blend door pot Blend door ref Blower motor Blower motor speed Blower motor speed controller (top right center of safety wall) Blower spped fback C227 C228 Cooling fan Cooling fan fuse 50a Cooling fan relay (engine compartment fuse box) Data link (+) Data link (-) Data link connector (dlc) (behind left side of i/p) Electronic automatic temperature control (eatc) module (center of i/p) Eng/met conv Engine compartment fuse box Fuse 15a Fuse 30a G101 (front of right front fender apron) G134 Ground Hot at all times Hot in run I/p fuse panel Ignition Illumination In car temp sens In-car temperature sensor (behind top center of i/p) Instrument cluster (digital) Interior lights system Pcm power relay Powertrain control module (pcm) (behind left side of i/p) Red Relay signal S113 S117 S118 S206 S226 S227 (i/p harness, behind left side of i/p) S251 Sensor ground Sun load sensor (top right side of i/p, above glove box) Sunload sens input A/C Wiring Diagram, Manual A/C for Mercury Grand Marquis GS 1997 List of elements for A/C Wiring Diagram, Manual A/C for Mercury Grand Marquis GS 1997: 47 (front of right front fender apron) (not used) A/c clutch cycling pressure switch (right rear of engine compartment) A/c clutch diode A/c compressor clutch A/c high pressure cut out switch (right side of engine compartment) A/c wot cutout relay (in relay center) A/c-heater mode switch Blend door actuator (behind right side of i/p) Blower motor Blower motor resistor assembly (top right center of safety wall) Blower motor switch Cold Cooling fan Cooling fan fuse 50a Cooling fan relay (in engine compartment fuse box) Def Engine compartment fuse box Floor Fuse 5 15a Fuse 9 30a G101 G134 (top of engine near fuel injector 1) G200 (behind left cowl panel, near door sill) G203 (behind right cowl panel, near door sill) Hot at all times Hot in run I/p fuse panel Max a/c Mix Norm a/c Off Pcm power relay Pnk Powertrain control module (pcm) (behind left side of i/p) Red S110 (eng harness, left rear of engine compt) S113 (eng harn, near right front fender) S200 (i/p harn, right side of i/p) S206 (i/p harn, near glove box lamp breakout) S207 (i/p harn, right side of i/p) S226 (i/p harness, top left side of i/p) S239 (eng harn, right rear of eng compt) Solid state Temperature control potentiometer Vent Warm
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams for Mercury Grand Marquis GS 1997 List of elements for Anti-lock Brake Wiring Diagrams for Mercury Grand Marquis GS 1997: 43 (engine compt harn, in breakout to evac and fill connector) (ngv) (gas) (right fender apron) Abs Abs cont fuse 30a Abs evac and fill connector (left front wheel well) Anti-lock brake module (left upper radiator support) Brake Brake on/off (boo) switch (pedal support) Computer data lines system Data link connector (left side of i/p) Dlc Engine compartment fuse box (behind battery) Fuse 10a Fuse 15a G101 Grd Hot at all times Hot in run Hot in start or run I/p fuse panel (left of steering col.) Ign Ind Left front brake sensor (brake ass'y) Left rear brake sensor (brake ass'y) Lf sens Lr sens Nca Pwr Red/pnk Rf sens Right front brake sensor (brake ass'y) Right rear brake sensor (brake ass'y) Rr sens S112 S136 S146 S231 S243 S265 S271 (near datalink) S299 s276 Warning lamps module or instrument cluster
COMPUTER DATA LINES Computer Data Lines for Mercury Grand Marquis GS 1997 List of elements for Computer Data Lines for Mercury Grand Marquis GS 1997: 33 (body harn, behind left side of i/p) (center of i/p) (ex natural gas) electronic automatic temperature control module (front of right front fender apron) g101 (main harn, near breakout to data link connector) s117 s297 Air bag diagnostic monitor (above glove box) Anti-lock brake module (left front radiator support) C2027 C276 C308 C518 Data link connector (dlc) (left side of i/p) Dlc Dlc (+) Dlc (-) Driver's door module (left front door) Driver's seat module (below driver's seat) Eec fuse 30a Engine compartment fuse box Evac and fill connector (left front wheel well) Ex natural gas Feps G203 (right cowl panel, near door sill) Hot at all times Lighting control module (lcm) (left side of i/p) Natural gas Natural gas vehicle (ngv) module (natural gas only) (front of radiator support) Powertrain control module (pcm) (left side of i/p, left side of safety wall) S100 S112 S118 s296 (main harn, near breakout to data link connector) S136 (engine harn, near breakout to evac and fill connector) S271 (main harn, near breakout to data link connector) S286
COOLING FAN Cooling Fan Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Cooling Fan Wiring Diagram for Mercury Grand Marquis GS 1997: 10 (front of right front fender apron) g101 Cooling fan Cooling fan fuse 50a Cooling fan relay (in engine compartment fuse box) Engine compartment fuse box Hot at all times Pcm power relay Powertrain control module (pcm) (behind left side of i/p) Red S113 (engine harn, near right front fender)
CRUISE CONTROL Cruise Control Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Cruise Control Wiring Diagram for Mercury Grand Marquis GS 1997: 41 Brake on/off (boo) switch (on brake pedal support) Brake pres- sure switch (below brake fluid re- servoir) Brake press C238 C254 C283 Clock- spring assembly (top of steering column) Coast Digital cluster only Engine compart- ment fuse box Fuse 15a G203 (right cowl panel, near door sill) Ground Horn relay (in engine compt fuse box) Horn switches Hot at all times Hot in acc or run Hrn fuse 15a I/p fuse panel Ind output Instrument cluster Lighting control module (lcm) Nca Off Ohms Power Resume S105 S210 S215 S243 (main harn, near breakout to multi- function switch) S263 Set/ accel Speed control servo/amplifier assembly (left rear corner of engine compt) Speed control switch assembly (top of steering column) Stop lamp Switch rtn Switch sig To (boo) switch) Vehicle speed sensor (vss) (rear of trans) Vss input
DEFOGGERS Defogger Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Defogger Wiring Diagram for Mercury Grand Marquis GS 1997: 29 (body harn, behind right side cowl panel) (right cowl panel, near door sill) C2026 Defrost on/off switch Engine compartment fuse box (right front of engine compartment) Fuse 10a G203 Heated backlight relay output Heated backlight switch Hidden antenna module (right front of trunk) Hot at all times Htd backlite 40a I/p fuse panel (left side of steering column) Interior lights system Left power/ heated mirror Lighting control module (left side of i/p) Nca On ind. Rear window defrost control Rear window defrost relay (engine compartment fuse box) Rear window defroster grid Right power/ heated mirror S119 S204 S252 (main harn, left side of steering column) S253 S503 S600 Switch illum.
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram, with Air Suspension for Mercury Grand Marquis GS 1997 List of elements for Electronic Power Steering Wiring Diagram, with Air Suspension for Mercury Grand Marquis GS 1997: 31 Act ctrl (+) Act ctrl (-) Air suspension/ evo steering module (right side of dash, above glove box) Air suspn pump/ speedo fuse 30a C215 C216 Engine compartment fuse box Evo actuator (lower left front of engine compartment, on power steering assembly) Fuse 15a G203 (right cowl panel, near door sill) Ground Hot at all times Hot in run I/p fuse panel Ignition Mirrors system Nca Rate input Red Rotation rate output S144 S208 S210 S226 S247 (main harn, near breakout to front control unit) S274 S411 Steering wheel rotation sensor (bottom of steering column) Vehicle speed sensor (vss) (left rear of transmission) Vss input (+) Vss input (-) Electronic Power Steering Wiring Diagram, without Air Suspension for Mercury Grand Marquis GS 1997 List of elements for Electronic Power Steering Wiring Diagram, without Air Suspension for Mercury Grand Marquis GS 1997: 25 Act ctrl (+) Act ctrl (-) Diag input Electronic variable orifice (evo) steering module (above glove box) Evo actuator (lower left front of engine compartment, on power steering assembly) Evo test connector (right side of trunk) Fuse 15a G203 (right cowl panel, near door sill) Ground Hot in run I/p fuse panel Mirrors system Nca Rate input Red S208 S210 S226 S247 (main harn, near breakout to front control unit) S274 Sensor ground Steering wheel rotation sensor (bottom of steering column) Vehicle speed sensor (vss) (left rear of transmission) Vss input (+) Vss input (-)
ELECTRONIC SUSPENSION
ENGINE PERFORMANCE
4.6L 4.6L, Engine Performance Wiring Diagrams (1 of 4) for Mercury Grand Marquis GS 1997 List of elements for 4.6L, Engine Performance Wiring Diagrams (1 of 4) for Mercury Grand Marquis GS 1997: 77 (front of right fender apron) g101 (front of right fender apron) (inside front of right front fender) (left front of engine in breakout to cam- shaft position sensor) (left rear corner of engine compt) (left side of i/p, near breakout to dlc) (rear of left fender apron) (right cowl panel, near door sill) (top right front of engine, in breakout to right ignition coil) A/c clutch sig C2021 Canister vent solenoid (right front of engine compt, lower side of eng compt fuse box) Case gnd Ckp (+) Ckp (-) Coil Coil 1 Coil 2 Cool fan ctrl Cooling fans system (cooling fan relay) Data link (+) Data link (-) Data link connector (left side of i/p) Ect sens Eec fuse 30a Egr vac reg Engine compartment fuse box (right front of engine compartment) Feps (eprom) Fuel flow rate Fuel level Fuel pump mon Fuse 15a Fuse 25a G101 G104 G203 Hot at all times Hot in run or start I/p fuse panel (below left side of i/p) Iat sens Instrument cluster system (fuel gauge) Left ignition coil Left radio noise capacitor Maf sig rtn Mil Nca Octane adjust Pcm power diode Pcm power relay Powertrain control module (top left side of safety wall) Pwr gnd Red Relay center (left side of engine compartment) Right ignition coil Right radio noise capacitor Rt ho2s #2 sig S100 S101 S102 S103 S105 S106 S116 S117 S118 S129 S276 Shift sol 1 Shift sol 2 To spark plugs 1 & 6 To spark plugs 2 & 8 To spark plugs 3 & 5 To spark plugs 4 & 7 Trans ctrl sw Trans temp Transmission control switch Vss (-) 4.6L, Engine Performance Wiring Diagrams (2 of 4) for Mercury Grand Marquis GS 1997 List of elements for 4.6L, Engine Performance Wiring Diagrams (2 of 4) for Mercury Grand Marquis GS 1997: 34 (a/c high pressure cut out switch) air conditioning system (left rear of engine compt) (left side of engine compt) (left side of engine compt, near breakout to fuel pump prime connector) (speedometer/ odometer) vehicle speed input C255 Crankshaft position (ckp) sensor (lower right front of engine) Crankshaft position sensor shield Differential pressure feedback egr sensor (near right side of intake manifold) Digital only Engine compartment fuse box (right front of engine compartment) Engine coolant temperature sensor (top left front of engine) Fuel flow rate input Fuel pmp fuse 20a Fuel pump prime connector (left side of engine compartment) Fuel pump relay G104 (rear of left front fender apron) Hot at all times Instrument cluster Intake air temperature sensor (rear of air cleaner assembly) Malfunction indicator input Octane adjust plug (left side of engine compartment) Red Relay center (left side of engine compartment) S101 S110 S124 S125 S126 (lower right rear of engine, near breakout to right heated oxygen sensor 1) S130 S147 Throttle position sensor (left side of throttle body) Transmission control indicator input Wot cutout relay 4.6L, Engine Performance Wiring Diagrams (3 of 4) for Mercury Grand Marquis GS 1997 List of elements for 4.6L, Engine Performance Wiring Diagrams (3 of 4) for Mercury Grand Marquis GS 1997: 28 (center rear of engine, in breakout to dpfe sensor) (left front of trunk) inertia fuel shutoff switch (on engine, near breakout to fuel injector 8) s131 (rear center of of engine) compartment) (right cowl panel, near door sill) 4r70w transmission Egr vacuum regulator solenoid (top center rear of engine) Electronic pressure control solenoid Evaporative emission (evap) canister purge valve Fuel injectors Fuel pump/ fuel gauge sender Fuel tank assembly G203 Idle air control valve (left side of intake manifold) Nca Output shaft speed sensor (left rear of transmission) Red S143 S148 (left side of engine compt) S402 Shift solenoids Ss1 Ss2 Tan Tan/ red Tan/red Torque converter clutch solenoid Transmission fluid temperature sensor 4.6L, Engine Performance Wiring Diagrams (4 of 4) for Mercury Grand Marquis GS 1997 List of elements for 4.6L, Engine Performance Wiring Diagrams (4 of 4) for Mercury Grand Marquis GS 1997: 87 (behind center of i/p, near breakout to front control unit) (below left side of i/p, near breakout to brake on/off switch) (left rear corner of engine compt) (left rear of engine compartment) speed control servo assembly (left rear of engine compt) s147 (left rear of engine compt, near brake fluid reservoir) (left rear of transmission) vehicle speed sensor (left side of transmission) transmission range sensor (rear of left front fender apron) (right cowl panel, near door sill) (right side of i/p) air suspension/ evo steering module (right side of i/p) electronic variable orifice (evo) steering module A/c wot cutout Batt Brake on/off Brake on/off switch C214 C216 C234 Cam pos in Camshaft position sensor (left front of engine) Camshaft position sensor shield Canp Coil 3 Coil 4 Dpfe sens Epc sol Fuel inj 1 Fuel inj 2 Fuel inj 3 Fuel inj 4 Fuel inj 5 Fuel inj 6 Fuel inj 7 Fuel inj 8 Fuel press Fuel pump ctrl Fuel tank pressure sensor (in fuel tank assembly) Fuse 15a G101 (right fender apron, right side of battery) G104 G203 Heater ctrl Hot at all times I/p fuse panel (left side of i/p) Iac sol L ho2s Left heated oxygen sensor #1 (lower left rear of engine) Left heated oxygen sensor #2 (rear of catalyst) Lft ho2s #1 sig Lft ho2s #2 sig Maf sens in Mass air flow sensor (left front of engine compartment) Nca Oss (+) Power Power gnd Powertrain control module (top left side of safety wall) Pwr gnd R ho2s Red Red/pnk Ref volt Right heated oxygen sensor #1 (lower right rear of engine) Right heated oxygen sensor #2 (rear of catalyst) Rt ho2s #1 sig S101 S105 S106 S109 S114 S115 S247 S258 S263 Sig rtn Tan Tan/red Tcc sol Tp sens in Tr sens Trans ctrl ind Vapor valve Vss (+) Vss (-) W/ air suspension and evo steering W/ evo steering only
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Back-up Lamps Wiring Diagram for Mercury Grand Marquis GS 1997: 10 Fuse 15a G407 (center rear of trunk, on support) Hot in run I/p fuse panel Left backup lamp Right backup lamp S226 S230 (main harn, near left cowl panel) S403 Transmission range (tr) sensor (left side of transmission) Exterior Lamps Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Exterior Lamps Wiring Diagram for Mercury Grand Marquis GS 1997: 92 (analog) (digital) (body harn, left front of trunk) (body harn, near brake switch breakout) s258 (center rear of trunk, on support) g407 (eng compt harn, near horn assembly breakout) s120 (eng compt harn, near left front fender) (eng compt harn, near right front fender) (fuel tank harn, near g407 breakout) s419 (left side of i/p) lighting control module (lcm) (main harn, near clock breakout) (main harn, near instrument cluster breakout) (rear harn, left rear of trunk) (rear harn, near trunk lid switch breakout) s412 (rear harn, right rear of trunk) (right fender apron, right side of battery) g102 B+ vbat 2 B+ vbat 3 Brake on/ off (boo) switch (top of brake pedal support) C2027 C2029 C250 C250 c256 C251 c256 C256 Circuit breaker 20a Clock Flasher power input Flasher power output Fuse 15a G201 (right cowl panel, near door sill) Grand marquis only Hazard switch Head Headlamp switch output Headlights system High mount stop lamp assembly Hot at all times Hot in run I/p fuse panel Instrument cluster Left Left corn- ering lamp Left front park lamp Left front side marker lamp Left rear park/ stop/ turn lamps Left turn indi- cator License lamps Lighting control module (lcm) (behind left side of i/p) Low beams output Main light switch Multi- function switch Nca Near trailer tow relays breakout) Off Park Parklamp output Parklamp switch input Right Right corn- ering lamp Right front park lamp Right front park/ turn/ side marker lamp Right front side marker lamp Right rear park/ stop/ turn lamps Right rear running lamp Right turn indi- cator S108 S113 S121 S122 S226 S242 S243 (main harn, near multi-function switch breakout) S257 S257 or s210 S262 S263 S285 S301 S400 S401 S402 S403 S409 S413 S414 S416 Trailer adapter Trailer exterior lamps relay Trailer left turn relay Trailer right turn relay Turn switch With trailer tow Trailer/Camper Adapter Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Trailer/Camper Adapter Wiring Diagram for Mercury Grand Marquis GS 1997: 41 (center rear of trunk, on support) (center rear of trunk, on support) g407 (fuel tank harn, near g400 breakout) s419 (fuel tank harn, near trailer relays breakout) s418 (left side of i/p) lighting control module (lcm) Battery charging wire Brake on/off & right turn signal output Brake on/off or left turn signal output Brake on/off switch C2029 Electric brake feed Engine compart- ment fuse box Engine compartment fuse box Fuse 15a G407 Hot at all times Hot in run I/p fuse panel Left turn signal & stop lamps Multi- function switch Multi-function switch breakout) Parklamp output Rear exterior lamps Red Right turn signal & stop lamps S226 S265 S402 S404 S409 (body harn, left front of trunk) S425 Tail lamps Tlr brakes fuse 30a Tlr tow fuse 20a Tlr tow fuse 40a Trailer battery charging relay (left side of trunk) Trailer electronic brake control unit Trailer exterior lamps relay (left side of trunk) Trailer ground wire Trailer left turn relay (left side of trunk) Trailer right turn relay (left side of trunk)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Mercury Grand Marquis GS 1997 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Mercury Grand Marquis GS 1997: 81 (analog) instrument cluster (engine compt harn, inside right front fender) (i/p harn, behind right side of i/p) s204 (not used) A/c clutch diode A/c compressor clutch A/c-heater mode switch illumination Air bag diagnostic monitor Air suspension compressor motor and vent solenoid Anti-lock brake module Auxiliary power Battery Blower motor resistor assembly Blower motor speed control C2026 C2029 C228 C250 C257 C276 C277 C303 C519 Camshaft position (cmp) sensor shield Clock Cooling fan Crankshaft position (ckp) sensor shield Crown victoria Data link connector (dlc) Door blend actuator Driver's door module Driver's seat module Electronic automatic temperature control (eatc) module Evac and fill connector Front control unit Fuel rail cutoff solenoid G101 (front of right front fender apron, right side of battery) G101 (right side of battery) G104 (rear of left front fender apron) G119 (lower right front of engine) G134 (near #1 fuel injector) G203 (right cowl panel, near door sill) Grand marquis Horn assembly I/p cigar lighter I/p cigar lighter lamp Left cornering lamp Left front park/turn lamp Left front park/turn/ side marker lamp Left front side marker lamp Left hi beam headlamp Left i/p courtesy lamp Left lo beam headlamp Lighting control module Lighting control module (lcm) Mass air flow (maf) sensor Natural gas only Natural gas vehicle module Pcm power relay Police option only Police power relay Powertrain control module (pcm) Right cornering lamp Right front park/turn lamp Right front park/turn/ side marker lamp Right front side marker lamp Right hi beam headlamp Right i/p courtesy lamp Right lo beam headlamp S108 (engine compt harn, near left cornering lamp) S112 (engine compt harn, near left crash sensor) S112 (engine compt harn, near right cornering lamp) S112 (i/p harn, behind right side of i/p) S113 S114 (engine compt harn, right rear of engine compartment) S141 (engine compt harn, in breakout to ground g101) S206 (i/p harn, near breakout to glovebox lamp) W/ eatc W/ memory seats W/o eatc Windshield washer low fluid switch Ground Distribution Wiring Diagram (2 of 3) for Mercury Grand Marquis GS 1997 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Mercury Grand Marquis GS 1997: 52 48 (bare) Air suspension/ evo steering module Analog cluster Blower motor switch Brake fluid level switch C2029 C216 C249 C250 C251 C255 C256 C257 C452 Cd changer Day/ night sensor/ amplifier Digital cluster Electronic variable orifice (evo) steering module Engine compartment lamp Engine coolant temperature sensor Front control unit Fuel tank assembly G200 (left cowl panel, near door sill) G203 (right cowl panel, near door sill) G407 (center rear of trunk, on support) Gasoline only Gnd Headlamp switch assembly High mount stop lamp assembly Ignition switch Instrument cluster Lighting control module (lcm) Lux radio Main light switch Message center switch assembly Midline radio only Nca Powertrain control module (pcm) Rear chassis unit S105 (engine compt harn, below brake fluid reservoir) S207 (i/p harn, behind right side of i/p) S210 (i/p harn, in breakout to instrument cluster) Shift lock actuator Speed control servo assembly Subwoofer amplifier Vehicle speed sensor (vss) W/ air suspension W/o air suspension W/o eatc Warning lamps module Windshield wiper motor Wiper control module Ground Distribution Wiring Diagram (3 of 3) for Mercury Grand Marquis GS 1997 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Mercury Grand Marquis GS 1997: 85 (crown victoria) left back-up lamp (crown victoria) right back-up lamp (grand marquis) left rear running lamp (grand marquis) right rear running lamp Air bag diagnostic connector Air suspension evo steering module All others C216 C319 C519 Dome lamp Driver's door module Driver's power lumbar compressor Driver's seat control switch Driver's seat module Electronic variable orifice (evo) steering module Emergency flasher relay #1 Emergency flasher relay #2 Front dome/ reading lamp Fuel filler door release solenoid Fuel filler release solenoid) Fuel tank assembly Fuel tank solenoid valve #1 Fuel tank solenoid valve #2 Fuel tank solenoid valve #3 Fuel tank solenoid valve #4 G203 (right cowl panel, near door sill) G407 (center rear of trunk, on support) Gasoline only Grand marquis Left back-up lamp Left front door courtesy lamp Left front door latch switch Left license lamp Left power/heated mirror Left rear door latch switch Left rear park/stop/ turn lamps Left rear window control switch Master window/ door lock control switch Memory switch Natural gas Nca One touch window down module Passenger's seat control switch Police map lamp assembly Police option Power mirror switch Rear dome/ reading lamp Remote keyless entry switch assembly Right back-up lamp Right front door courtesy lamp Right front door latch switch Right front window/door lock control switch Right license lamp Right power/ heated mirror Right power/heated mirror Right rear door latch switch Right rear park/stop/ turn lamps Right rear window control switch S208 (i/p harn, near breakout to blend door actuator) S304 (body harn, near breakout to seatbelt switch) S400 (rear harn, near breakout to left rear running lamp) S401 (rear harn, near breakout to right rear running lamp) S403 (rear harn, near breakout to right license lamp) S404 (rear harn, left rear of trunk) S405 (rear harn, in breakout to fuel tank valve #4) S428 (rear harn, near breakout to fuel assembly #2 valve) S500 (door harn, near breakout to driver's seat control switch) S503 (door harn, in center of left door) S600 (door harn, near breakout to right front window motor) Seat belt switch Seat switch Standard production Steering wheel rotation sensor Trailer battery charging relay Trailer exterior lamps relay Trailer ground wire Trailer left turn relay Trailer right turn relay Trunk lid lamp Trunk lid release solenoid/ door release ajar switch Trunk lid release switch W/ air suspension W/o air suspension W/o keyless entry
HEADLIGHTS Headlamps Wiring Diagram, with DRL for Mercury Grand Marquis GS 1997 List of elements for Headlamps Wiring Diagram, with DRL for Mercury Grand Marquis GS 1997: 107 "lamps on" adjustment (main harn, near engine compt grommet) s248 (main harn, near glove box lamp breakout) (main harn, near instrument cluster breakout) (not used) * analog cluster ** digital cluster **c256 *c250 Acc Aut0lamp enable Autolamp delay Autolamp ind output Autolamp indicator Autolamp on/off B(+) vbat 4 B+ (vbat 2) B+ (vbat 3) Backlighting Bat pwr Brake fluid level switch Brake ind Brake indicator C180 C2004 C2026 C2027 C2028 C2029 C249 C250 C262 Circuit breaker 20a Day/night sensor amplifier Daytime running lamps module (on front of upper radiator support) Demand lighting out Dimmer switch Early Engine compartment fuse box (right front of engine compartment) Exit delay rheostat Flash-to- pass Fuse 15a G101 (front of right front fender apron, right side of battery) G200 (left cowl panel, near door sill) G203 (right cowl panel, near door sill) Gnd Head Headlamp dimmer switch Headlamp input Headlamp switch assembly Hi beam indicator Hi beams output Hi input Hi-beam headlights fuse 20a Hi-beam input Hot at all times Hot in acc or or run Hot in run Hot in run or start I/p fuse panel (below left side of i/p) Ign (run) Ign acc or run Ign start or run Ignition switch Instrument cluster Late Left hi beam headlamp Left lo beam headlamp Lighting control module (behind left side of i/p) Lo beam in Lo beams output Lock Low Main light switch Max Min Multi- function switch Off Panel dimmer Park Park brake Park brake switch Park lamp input Pass Right hi beam headlamp Right lo beam headlamp Run S112 S113 S138 (eng compt harn, near horn assy breakout) S140 (eng compt harn, near primary crash sensor breakout) S149 S203 S204 * S207 S210 ** S226 S262 S276 S278 S280 S285 S290 Start W/ analog cluster W/ digital cluster Warning lamps module Headlamps Wiring Diagram, without DRL for Mercury Grand Marquis GS 1997 List of elements for Headlamps Wiring Diagram, without DRL for Mercury Grand Marquis GS 1997: 77 "lamps on" adjustment (main harn, near glove box lamp breakout) (main harn, near instrument cluster breakout) s280 (not used) * analog cluster ** digital cluster **c256 *c250 Aut0lamp enable Autolamp delay Autolamp ind output Autolamp indicator Autolamp on/off B(+) vbat 4 B+ (vbat 2) B+ (vbat 3) Backlighting C2026 C2027 C2028 C2029 C249 C262 Circuit breaker 20a Day/night sensor amplifier Demand lighting out Dimmer switch Early Engine compartment fuse box (right front of engine compartment) Exit delay rheostat Flash-to- pass Fuse 15a G101 (front of right fender apron, right side of battery) G200 (left cowl panel, near door sill) G203 (right cowl panel, near door sill) Head Headlamp dimmer switch Headlamp input Headlamp switch assembly Hi beam indicator Hi beam input Hi beams output Hi-beam headlights fuse 20a Hot at all times Hot in acc or run Hot in run or start I/p fuse panel (below left side of i/p) Ign acc or run Ign start or run Instrument cluster Late Left hi beam headlamp Left lo beam headlamp Lighting control module (behind left side of i/p) Lo beams output Main light switch Max Min Multi- function switch Off Panel dimmer Park Park lamp input Pass Right hi beam headlamp Right lo beam headlamp S112 S113 S138 (eng compt harn, near horn assy breakout) S140 (eng compt harn, near primary crash sensor breakout) S204 * S207 S210 ** S262 S276 S278 S285 S290 Lighting Control Module Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Lighting Control Module Wiring Diagram for Mercury Grand Marquis GS 1997: 78 (digital cluster only) (police package only) All doors lock in Anti-theft system Autolamp delay pot Autolamp enable Autolamp indic Autolamps on/off C.b. 12 20a C2026 C2027 C2028 C2029 Computer data lines system Courtesy lamps out Data link connector Decklid ajar sw Defogger system Demand lighting out Dome lamp sw Door ajar out Door handle sws Door locks system Driver door ajar sw Engine compartment fuse box Exterior lights system Flasher out Flasher power in Fuse 13 15a Fuse 4 15a Fuse 6 15a Fuse 8 15a G200 (left cowl panel) G203 (right cowl panel) Ground Hazard warn indic Headlamp sw Headlights system Hi beam sw in Hi beams out Hi-beam hdlts fuse 20a Horn relay out Horns system Hot at all times Hot in acc or run Hot in run or start I/p fuse panel Instrument cluster system Interior lights system Key-in-ignition sw Lighting control module (lcm) (left side of i/p) Low beams out Panel dim down sw Panel dim up sw Panic alarm in Parklamp out Parklamp sw Pass door ajar sw Power (battery) Power (ignition) Pulse width dim out Rear defog relay Rear defog sw S149 S200 S204 S207 S227 S262 S276 S278 S285 Seat belt fastened sw Seat belt indic out Tone request Trunk, tailgate, fuel doors system Variable volt dimming Warning systems
HORN Horn Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Horn Wiring Diagram for Mercury Grand Marquis GS 1997: 17 (front of right front fender apron, right side of battery) g101 C2026 Clockspring assembly Control switch ground Cruise control system Engine compartment fuse box (right front of engine compartment) Horn Horn assembly (left bumper shock bracket) Horn fuse 15a Horn relay (in engine compartment fuse box) Hot at all times Lighting control module (lcm) (left side of i/p) Nca S112 Speed control servo assembly (left rear of engine compartment) Switches
INSTRUMENT CLUSTER Electronic Cluster Wiring Diagram (2 of 2) for Mercury Grand Marquis GS 1997 List of elements for Electronic Cluster Wiring Diagram (2 of 2) for Mercury Grand Marquis GS 1997: 75 (above glove box) (behind right (body harn, at (body harn, near (center rear (left front door) (left side of i/p) (main harn, (main harn, near (part of (right cowl panel, 10a A pillar) Air suspension Airbag diagnostic Ajar Ajar lamp output Behind left Breakout to C2026 C2027 C2029 C216 C518 Center of right Closed Connector) Cowl panel, Decklid jar Door Door ajar Driver's ajar switch Driver's door Evo steering module Front Fuse G203 G407 Generator/voltage regulator Hot I/p In run Input Kick panel) Latch Latch assembly) Left Lid Lighting control module Lighting ctrl Module Module) Near door sill) Of trunk On support) Panel Pass. ajar switch Rear Right S231 S257 S268 S273 S277 S304 S403 S500 S600 Seat belt Seatbelt ind out Seatbelt switch Solenoid ajar switch Switch Tone request Trunk lid release Warning Lights Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Warning Lights Wiring Diagram for Mercury Grand Marquis GS 1997: 27 (left cowl panel, near door sill) Acc Anti- lock brake module (left front radiator support) Anti- lock indicator Brake fluid level switch Brake indicator C162 C2026 Daytime running lamps (drl) module (center front of vehicle) Fuse 15a G200 Gnd Hazard warning indicator Hot in start or run I/p fuse panel Ignition switch Lighting control module (left side of i/p) Lock Off Park brake switch (top of park brake assembly) Run S207 S276 Start W/ drl W/o drl Warning lamps module
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Courtesy Lamps Wiring Diagram for Mercury Grand Marquis GS 1997: 68 (body harn, near blend door actuator breakout) s237 (body harn, near left power heated mirror breakout) s505 (body harn, near right "a" pillar) s259 (center of left front door) driver's door module (main harn, near message center switch assembly breakout) s236 (right cowl panel, near door sill) (roof harn, near center of right "a" pillar) (roof harn, near front dome/ reading lamp breakout) s900 All others B (+) C2026 C2027 C2029 C262 C518 Circuit breaker 20a Demand out Dome lamp Door ajar For connection to left deck lamp For connection to right deck lamp Front dome/ reading lamp Fuse 15a G203 G203 (behind right cowl panel, near door sill) G203 (right cowl panel, near door sill) Glove box lamp Handle sw Headlights system Hot at all times I/p fuse panel Lamps out Left front door courtesy lamp Left front door handle switch Left front door latch switch Left i/p courtesy lamp Left rear door latch switch Left vanity lamp Lighting control module (lcm) (behind left side of i/p) Main light switch Nca Police map lamp assembly (center of windshield header) Police option Power distribution system Rear dome/ reading lamp (grand marquis only) Rear flasher (center rear of trunk) Right front door courtesy lamp Right front door handle switch Right front door latch switch Right i/p right i/p courtesy courtesy lamp lamp Right rear door latch switch Right vanity lamp S200 S208 S227 S262 S290 (main harn, near glove box lamp breakout) S431 (luggage compt harn, near right rear speaker breakout) S500 S600 S901 S902 Standard production Switch input Trunk ajar Trunk lid lamp Trunk lid release solenoid/ ajar switch Trunk lid switch Instrument Illumination Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Instrument Illumination Wiring Diagram for Mercury Grand Marquis GS 1997: 70 (body harn, near air supension/evo steering module breakout) (body harn, near left power heated mirror breakout) s507 (body harn, near right front window/ door lock control switch breakout) s289 (digital) (analog) (left cowl panel, near door sill) (main harn, near blend door actuator breakout) s287 (main harn, near clock breakout) (right cowl panel, near door sill) A/c-heater mode switch illumination B (+) C2026 C2027 C2029 C227 C228 C249 C255 C256 c250 C262 Circuit breaker 20a Clock Cluster/ prndl illumination Digital cluster only Dim dn input Dim down Dim up Dim up input Dimming out Door locks system keyless entry circuit Electronic automatic temperature control (eatc) module Front control unit (radio) Fuse 15a G200 G203 Grd Head Headlamp dimmer switch Headlamp switch assembly Headlite sw in Hot at all times I/p cigar lighter lamp I/p fuse panel Illumination Instrument cluster Led switch illum Left rear window control switch Lighting control module (lcm) (behind left side of i/p) Locks input Main light switch Master window/ door lock control switch Message center switch assembly Off Park Parklite sw in Rear window defrost control Right front window/ door lock control switch Right rear window control switch S204 S207 S208 S227 S262 S285 S288 S500 S503 S523 S600 W/ eatc W/o eatc
MEMORY SYSTEMS Memory System Wiring Diagrams for Mercury Grand Marquis GS 1997 List of elements for Memory System Wiring Diagrams for Mercury Grand Marquis GS 1997: 78 (seat harness, under driver's seat) s314 (seat harness, under driver's seat) s315 20a Acc Anti-lock brakes system C302 C303 C318 C319 C320 C321 C322 C325 Door locks system (driver's door module) Door locks/ seat motors c.b. Driver's power seat motor Driver's recliner motor Driver's seat control switch Driver's seat module (below left front seat) Engine compartment fuse box (right front of engine compartment) Entire seat Front Front mtr down Front mtr up Front of seat Front up/dn sensor Fuse 15a Fwd Fwd/rwd G203 (right cowl panel, near door sill) Ground Horizontal mtr fwd Horizontal mtr rwd Hot at all times I/p fuse panel (left side of i/p) Ignition switch Lf rwd/fwd snsr Lock Mem Mem seat sw set Memory sw lamp Memory sw pos #1 Memory sw pos #2 Memory switch Module iso link Nca Off Potentiometer com Power Rear Rear mtr down Rear mtr up Rear of seat Rear up/dn sensor Recline forward Recline rearward Recliner mtr fwd Recliner mtr rwd Recliner sensor Recliner sensor com Run Rwd S228 S229 S267 S310 S312 Seat forward Seat front down Seat front up Seat rear down Seat rear up Seat rearward Seatback Set Sta Start Trans range input
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Mercury Grand Marquis GS 1997 List of elements for Power Distribution Wiring Diagram (1 of 4) for Mercury Grand Marquis GS 1997: 81 (engine compt harn, near breakout to fuse box) s100 (i/p harn, behind left side of i/p) s283 (i/p harn, in breakout to blend door actuator) s245 (rear harn, near breakout to right rear speaker) (rear harn, near breakout to right rear speaker) s407 (seat harn, near recliner sensor) s310 Air suspension compressor motor/ vent solenoid Air suspension/ evo steering module Air suspn pump/ speedo fuse 30a Audio fuse 25a Base vehicle and police Battery C216 C251 C319 C452 C520 Cd changer Compressor relay Customer use Datalink connector Door locks/ seat motors circuit breaker 20a Driver's door module Driver's lumbar switch Driver's seat control switch Driver's seat module Eec fuse 30a Engine compartment fuse box Except natural gas From police a fuse (diagram 1 of 4) Fuel filler door release switch Fuel indicator module Fuel pump fuse 20a Fuel pump prime connector Fuel pump relay or fuel valve relay Fusible link (12 ga) (gray) Generator/ voltage regulator Horn fuse 15a Horn relay Instrument cluster (analog) Left rear air spring solenoid Master window/ door lock control switch Nca Passenger's seat control switch Pcm power relay Police fuse 30a Police fuse 50a Police option Police option fuse holder Police power relay Powertrain control module Rear chassis unit Red Relay center Right front window/ door lock control switch Right rear air spring solenoid S124 (engine harn, near breakout to fuel pump prime) S144 (engine compt harn, near breakout to fuse box) S151 (engine compt harn, near breakout to right headlamp) S282 (i/p harn, behind left side of i/p) S311 (seat harn, near driver's seat module) S406 (rear harn, near breakout to rear air spring solenoid) S411 S425 (trunk harn, near breakout to trailer relays) Starter/ motor solenoid Subwoofer amplifier (jbl only) Tlr brakes fuse 30a Tlr tow fuse 20a Tlr tow fuse 40a To abs cont fuse (diagram 2 of 4) To air suspn pump/ speedo fuse (diagram 1 of 4) Trailer battery charging relay Trailer exterior lamps relay Trailer left turn relay Trailer right turn relay Trailer/camper adapter (electronic brake control unit) Trunk lid release switch W/ keyless entry W/ memory seats W/o keyless entry W/o memory seats Power Distribution Wiring Diagram (2 of 4) for Mercury Grand Marquis GS 1997 List of elements for Power Distribution Wiring Diagram (2 of 4) for Mercury Grand Marquis GS 1997: 70 (engine compt harn, near breakout to ground g101) s149 (engine compt harn, near breakout to primary crash sensor) s146 (i/p harn, near breakout to instrument cluster) s294 (i/p harn, near breakout to lighting control module) s228 Abs cont fuse 30a Anti-lock brake module Auxiliary power outlet C2028 C2029 C228 C249 C255 C257 C262 C303 Circuit breaker 20a Clock Cooling fan fuse 50a Cooling fan relay Daytime running lamps module Digital cluster Driver's seat control switch Driver's seat module Electronic automatic temperature control (eatc) module Emergency flasher relay #1 Emergency flasher relay #2 Engine compartment fuse box Evac and fill connector From door locks/ seat motors circuit breaker (diagram 1 of 4) Front control unit Fuse 10a Fuse 15a Fuse 20a G203 (right cowl panel, near door sill) Gaso- line Headlamp switch assembly Hi-beam headlights fuse 20a Htd backlite fuse 40a I/p cigar lighter I/p fuse panel Instrument cluster Lamps fuse pnl fuse 40a Left power/ heated mirror Left spot light Lighting control module Lighting control module (lcm) Main light switch Master window/ door lock control switch Memory switch Multi- function switch Natural gas Nca Police option Power mirror switch Rear window defrost control Rear window defrost relay Remote keyless entry switch assembly Right front window/door lock control switch Right power/ heated mirror Right spot light S119 (engine compt harn, near breakout to fuse box) S206 S252 (main harn, near breakout to multi- function switch) S253 (i/p harn, right kick panel) S262 (i/p harn, near breakout to lighting control module) S285 (i/p harn, near breakout to main light switch) S426 (trunk harn, near breakout to relay center) To str alt fuse (diagram 3 of 4) W/police option W/remote keyless entry Power Distribution Wiring Diagram (3 of 4) for Mercury Grand Marquis GS 1997 List of elements for Power Distribution Wiring Diagram (3 of 4) for Mercury Grand Marquis GS 1997: 62 (digital) (analog) (i/p harn, near breakout to day/night sensor amplifier) s226 (i/p harn, near breakout to day/night/ sensor amplifier) s269 (i/p harn, near breakout to ignition switch) s263 (w/ eatc) (w/ eatc) (w/o eatc) (w/o eatc) A/c-heater mode switch Acc Air bag diagnostic monitor Air suspension/ evo steering module Anti-lock brake module Blend door actuator Blower motor Brake on/off (boo) switch Brake pressure switch C216 C228 C255 C256 C256 c251 C277 Daytime running lamps (drl) module Electronic automatic temperature control (eatc) module Electronic day/night mirror Engine compartment fuse box Evac and fill connector Evo steering module From htd backlite fuse (diagram 2 of 4) Fuse 10a Fuse 15a Fuse 30a Generator/ voltage regulator I/p fuse panel Ig sw fuse 50a Ignition switch Instrument cluster Instrument cluster (digital) Lock Multi- function switch Nca Near breakout to ignition switch) Off Run S231 (i/p harn, near clock) S254 (i/p harn, near breakout to airbag) S272 (i/p harn, near breakout to ignition switch) S274 (i/p harn, near breakout to evo steering module) Shift lock actuator Start Starting/ charging system Steering wheel rotation sensor Str alt fuse 30a To fuse 2, 6, 11 & circuit breaker 14 (diagram 4 of 4) To fuse 7 & 13 (diagram 4 of 4) Trailer battery charging relay Transmission range (tr) sensor W/ air suspension W/ anti-lock brake system W/ eatc W/o air suspension W/o eatc Power Distribution Wiring Diagram (4 of 4) for Mercury Grand Marquis GS 1997 List of elements for Power Distribution Wiring Diagram (4 of 4) for Mercury Grand Marquis GS 1997: 53 (body harn, near breakout to transmission range sensor) s128 (engine harn, near breakout to right ignition coil) s102 (i/p harn, near breakout to datalink connector) s266 (i/p harn, near breakout to day/night sensor amplifier) s276 (i/p harn, near breakout to defogger control) s278 (i/p harn, near breakout to front control unit) s224 (i/p harn, near breakout to ignition switch) s221 (i/p harn, near breakout to trunk lid release switch) s211 (not used) Air bag diagnostic monitor C2027 C249 C250 C251 C257 C262 C276 C520 Circuit breaker 20a Clock Digital cluster Driver's door module Engine compartment fuse box From ignition switch (diagram 3 of 4) Front control unit Fuse 15a Fuse 25a Fuse 30a Headlight switch assembly I/p fuse panel Instrument cluster (analog) Left ignition coil Left radio noise capacitor Lighting control module (lcm) Master window/ door lock control switch Nca One touch window down module Pcm power diode Police option Police power relay Relay center Right ignition coil Right radio noise capacitor S103 S225 (i/p harn, near breakout to ignition switch) Speed control servo assembly Transmission control switch (tcs) Trunk lid release switch W/ keyless entry W/o keyless entry Warning lamps monitor Windshield wiper motor Wiper control module
POWER DOOR LOCKS Door Lock Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Door Lock Wiring Diagram for Mercury Grand Marquis GS 1997: 24 (body harn, near breakout to 16 pin conn, behin left cowl panel) s260 (body harn, near breakout to boo switch) s261 (main harn, near breakout to right rear door grommet) s291 C2029 Door lock in Door locks/ seat motors circuit breaker 20a Engine compartment fuse box (right front of engine compt) G203 (right cowl panel, near door sill) Hot at all times Interior lights system Left front door lock motor Left rear door lock motor Lighting control module (behind left side of i/p) Lock Master window/door lock control switch Right front door lock motor Right front window/door lock control switch Right rear door lock motor S208 S245 S288 (body harn, near breakout to air suspsn/ evo strng mod) S503 S600 Unlock Keyless Entry Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Keyless Entry Wiring Diagram for Mercury Grand Marquis GS 1997: 74 (body harn, near breakout to boo switch) (body harn, near breakout to left power heated mirror) s506 (body harn, near breakout to left pwr htd mirror) s506 1/2 3/4 5/6 7/8 9/0 C2026 C2027 C2029 C518 C519 C520 Door ajar Door handle Door hndl sw Door lock Door locks/ seat motors circuit breaker 20a Door unlock Driver's door module (left front door) Engine compartment fuse box (right front of engine compt) Fuse 8 15a G203 (right cowl panel, near door sill) G407 (center rear of trunk, on support) Hot at all times I/p fuse panel (left side of i/p) Interior lights system Keypad illum Keypad lamp Left front door handle switch Left front door lock motor Left rear door lock motor Lf door unlck Lighting control module (behind left side of i/p) Lock Master window/ door lock control switch Mem 1 Mem 2 Memory systems Nca Panic Panic out Power distribution system Red Remote keyless entry switch assembly Right front door handle switch Right front door lock motor Right front window/door lock control switch Right rear door lock motor S208 S228 S245 S260 (body harn, near breakout to 16 pin conn, behind left cowl panel) S261 (body harn, near breakout to park boo switch) S288 (body harn, near breakout to air suspsn/ evo strg mod) S291 (main harn, near breakout to right rear door grommet) S304 S403 S500 S503 S510 (body harn, near breakout to left front door) S511 S600 Seat Seat switch Start input Starting/charging system Trunk Trunk lid Trunk lid release solenoid/ ajar switch Trunk lid release switch Trunk, tailgate, fuel doors system Unlock
POWER MIRRORS Photochromic Mirror Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Photochromic Mirror Wiring Diagram for Mercury Grand Marquis GS 1997: 13 Electronic day/night mirror Exterior lights system Fuse 15a G203 (right cowl panel, near door sill) Ground Hot in run I/p fuse panel Ignition Reverse S226 S230 (main harness, left cowl panel) S500 Transmission range (tr) sensor (left side of transmission) Power Mirror Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Power Mirror Wiring Diagram for Mercury Grand Marquis GS 1997: 16 Defogger system Direct- tional switch Fuse 15a G203 (behind right cowl panel near door sill) Hot at all times I/p fuse panel L/r motor Left power/ heated mirror Left/ right switch Nca Power mirror switch Red Right power/ heated mirror S228 S500 Up/dn motor
POWER SEATS 6-Way, Recliner & Lumbar Power Seat Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for 6-Way, Recliner & Lumbar Power Seat Wiring Diagram for Mercury Grand Marquis GS 1997: 33 nca Door lock/seat motors circuit breaker 20a Driver's lumbar air bladder Driver's lumbar switch Driver's power lumbar compressor (under front of left seat assembly) Driver's power seat motor Driver's recliner motor Driver's seat control switch Engine compartment fuse box (right front of engine compt) Entire seat Front height motor Front of seat Fwd Fwd/ rwd motor G203 (right cowl panel, near door sill) Hot at all times Inflate Nca Passenger's power seat motor Passenger's recliner motor Passenger's seat control switch Rear height motor Rear of seat Red Red Rwd S208 S245 S304 S500 S600 Seat back Vent Driver Power Seat Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Driver Power Seat Wiring Diagram for Mercury Grand Marquis GS 1997: 18 Door locks/ seat motors circuit breaker 20a Driver's power seat motor Driver's seat control switch Engine compartment fuse box (right front of engine compartment) Entire seat Front height motor Front of seat Fwd Fwd/ rwd motor G203 (right cowl panel, near door sill) Hot at all times Nca Rear height motor Rear of seat Red Rwd S245 S304
POWER WINDOWS Power Window Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Power Window Wiring Diagram for Mercury Grand Marquis GS 1997: 47 (2 led's per switch) (body harn, near break- out to brake on/ off switch) s264 (body harn, near breakout to air suspension/evo steering module) s288 (left front door) C298 C518 C520 Circuit breaker 20a Door lock control switch Driver's door module (w/ keyless entry) Entry G203 (right cowl panel, near door sill) Hot in acc or run I/p fuse panel (left side of i/p) Ign Interior lights system Keyless Left Left front Left front window motor Left front window motor (police only) Left rear Left rear window motor Master window/ door lock control switch Nca One touch window down module (w/o keyless entry) Others Police Rear window control switch Right Right front Right front window motor Right rear Right rear window motor S208 S218 S500 S503 S504 (body harn, near breakout to left front door speaker) S600 Solid state W/ keyless entry W/o W/o keyless entry Window lock switch Wndw dn Wndw up
RADIO Base Radio for Mercury Grand Marquis GS 1997 List of elements for Base Radio for Mercury Grand Marquis GS 1997: 22 Battery (b+) C257 C258 Front control unit Fuse 11 15a Fuse 8 15a G203 (right kick panel) Ground Hot at all times Hot in accy or run I/p fuse panel Ignition Illumination Interior lights system Left front door speaker Left frt Left rear speaker Left rr Right front door speaker Right frt Right rear speaker Right rr Premium Sound Radio Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Premium Sound Radio Wiring Diagram for Mercury Grand Marquis GS 1997: 63 (acp) a (acp) b (jbl only) (not used) Antenna Audio comm Audio fuse 25a Audio on Battery (+) Battery (b+) C257 C259 C401 C451 C452 C490 C497 C498 Cd changer Enable Engine compartment fuse box Front control unit Fuse 11 15a Fuse 8 15a G203 (right kick panel) G407 (center rear of trunk, on support) Ground Hot at all times Hot in accy or run I/p fuse panel Ignition Illumination Interior lights system Left front door speaker Left rear speaker Left sig in Left sig out Lt front spkr (+) Lt front spkr (-) Lt rear spkr (+) Lt rear spkr (-) Nca Output (+) Output (-) Rear chassis unit (right front of trunk) Right front door speaker Right rear speaker Right sig in Right sig out Rt front spkr (+) Rt front spkr (-) Rt rear spkr (+) Rt rear spkr (-) Shield Start Starting system Subwoofer amplifier (jbl only) (left side of rear package tray) Subwoofer speaker Tan Tape l + Tape l - Tape r + Tape r -
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Shift Interlock Wiring Diagram for Mercury Grand Marquis GS 1997: 15 (main harn, in breakout to multi-function switch) s243 Brake pedal position (bpp) switch (top of brake pedal support) Exterior lights system Fuse 1 15a Fuse 5 15a G200 (behind left kick panel) Hot at all times Hot in run I/p fuse panel (below dash, left of steering column) S203 S226 S258 (body harn, in breakout to brake pedal position (bpp) switch) S263 Shift lock actuator (at bottom of steering column) Solid state
STARTING/CHARGING Charging Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Charging Wiring Diagram for Mercury Grand Marquis GS 1997: 23 Battery C153 C154 C251 C251 c256 C256 Charge indicator Engine compartment fuse box Fuse 10a G101 (right side of battery) G119 (lower right front of engine) Gasoline only Generator/ voltage regulator Hot in run I/p fuse panel Instrument cluster Red S127 S231 Starter motor/ solenoid Str alt fuse 30a W/ analog cluster W/ digital cluster Starting Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Starting Wiring Diagram for Mercury Grand Marquis GS 1997: 29 (eng compt harn, near breakout to trans range sensor) (lower right front of engine) Acc Battery C303 C518 Driver's door module (left front door) Driver's seat module (below driver's seat) Engine compartment fuse box G101 (right side of battery) G119 Hold Ignition switch Lock Off Pull in Rear chassis unit (right front of trunk) Red Run S127 S128 S267 (main harness, near break- out to ignition switch) Seat module) s313 Sta Start Starter motor/ solenoid Str alt fuse 30a Trans- mission range (tr) sensor (left side of trans) W/lux radio only
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Supplemental Restraint Wiring Diagram for Mercury Grand Marquis GS 1997: 42 (behind right side of i/p) air bag diagnostic connector (i/p harn, near air bag diagnostic monitor breakout) s254 (i/p harn, near blend door actuator breakout) (i/p harn, near day/ night sensor amp breakout) (i/p harn, near glove- box lamp breakout) Air bag diagnostic monitor (above glove box) Air bag ind Air bag indicator control C276 C277 Clock- spring assembly Computer data lines Data link Diag conn Driver's air bag Drvr air bag Fuse 10 10a Fuse 13 15a Fuse 18 15a G203 (right cowl panel) Gnd Hot at all times Hot in run Hot in run or start I/p fuse panel (below left side of i/p) Instrument cluster L crash sens Left primary crash sensor (left front upper radiator support) Nca Pass air bag Passenger's air bag Pwr (bat) Pwr (run) R crash sens Right primary crash sensor (right front upper radiator support) S206 S208 S269 S276 Shorting bar Tan/ red Tan/red
TRANSMISSION Transmission Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Transmission Wiring Diagram for Mercury Grand Marquis GS 1997: 92 (harness 7c078, left rear of engine compartment) (harness 7c078, left rear of engine compt) s125 (harness 9d930, lower right rear of engine compt) (harness 9d930, near injector 8) s126 (in harn 12a581, left rear of engine compt) (left side of transmission) transmission range (tr) sensor (ngv) (gas) 4r70w transmission A/c cycling Airbag diagnostic monitor, lighting control module, instrument cluster Analog Boo switch input Brake on/off (boo) switch (near top of brake pedal) Brake press switch, multi- function switch C250 C255 Data link + Data link - Data link connector Data link power Digital Eec fuse 30a Elect press cntrl Electronic pressure control (epc) solenoid Engine compartment fuse box (right front of engine compartment) Engine controls system Engine coolant temperature (ect) sensor (on top left front of engine) Fuse 25a G101 (side of battery) G203 (behind Ground Hot at all times Hot in run or start I/p fuse panel (below dash, left of steering column) I/p fuse panel (below dash, left of steering column) Ignition coils, radio noise capacitors Ignition power Instrument cluster Instrument cluster, cruise control Intake air temp Intake air temperature (iat) sensor (on rear of air cleaner assembly) Kapwr Maf return Maf sensor sig Mass air flow (maf) sensor (behind air cleaner assembly) Output shaft sig Output shaft speed (oss) sensor (left rear of trans- mission) Pcm data link connector (partial) (behind left side of dash) Pcm power diode Pcm power relay Powertrain control module (pcm) (behind left side of dash) Red Red red Ref votage Relay center (left side of engine compartment) Right kick panel) S100 S105 S106 S109 S114 S123 S129 (in harness 21a581, left rear of engine compt) S147 S148 S243 s295 S263 S276 S296 s118 S297 s117 Shift sol 1 Shift solenoid 2 Shift solenoids Signal control Ss1 Ss2 Tci lamp Temp sens Throttle position (tp) sensor (on throttle body) To a/c system Torque conv sol Torque converter clutch (tcc) solenoid Tps signal Tr sens/pnp sw Trans cntrl sw Trans control indicator lamp Trans temp Transmission control switch (tcs) (bottom of steering column) Transmission fluid temperature sensor Vehicle speed sensor (left rear of trans- mission) Vss (-) Vss signal
TRUNK, TAILGATE, FUEL DOOR Fuel Door Release Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Fuel Door Release Wiring Diagram for Mercury Grand Marquis GS 1997: 8 Door locks/ seat motors circuit breaker 20a Engine compartment fuse box (right front of engine compt, behind battery) Fuel filler door release solenoid (left side of trunk, near fuel door) Fuel filler door release switch G407 (center rear of trunk, on support) Hot at all times S245 S402 Trunk Release Wiring Diagram, with Keyless Entry for Mercury Grand Marquis GS 1997 List of elements for Trunk Release Wiring Diagram, with Keyless Entry for Mercury Grand Marquis GS 1997: 22 "trunk ajar" input C254 C519 C520 Decklid ajar switch Digital cluster only Door locks/ seat motors circuit breaker 20a Driver's door module (in center left front door) Engine compartment fuse box (right front of engine compt, behind battery) G203 (right cowl panel, near door sill) G407 (center rear of trunk, on support) Hot at all times Instrument cluster (digital) Lighting control module (lcm) (behind left side of i/p) Release out Release sw S245 S403 S500 S506 (body harn, near breakout to left power heated mirror) Trunk lid release solenoid/ajar switch (center rear of trunk lid, part of latch assembly) Trunk lid release switch Trunk Release Wiring Diagram, without Keyless Entry for Mercury Grand Marquis GS 1997 List of elements for Trunk Release Wiring Diagram, without Keyless Entry for Mercury Grand Marquis GS 1997: 23 "trunk ajar" input (police only) C254 C298 Circuit breaker 20a Decklid ajar switch Digital cluster only Door locks/ seat motors circuit breaker 20a Engine compartment fuse box (right front of engine compt, behind battery) G407 (center rear of trunk, on support) Hot at all times Hot in acc or run I/p fuse panel (left side of i/p) Instru- ment cluster (digital) Lighting control module (lcm) (behind left side of i/p) Police only S205 (main harn, near breakout to 3 pin in-line conn, behind left side of i/p) S211 S245 S273 (main harn, near breakout to 16 pin in-line conn, behind left cowl panel) S403 Trunk lid release solenoid/ajar switch (center rear of trunk lid, part of latch assembly) Trunk lid release switch
WARNING SYSTEMS Warning System Wiring Diagrams for Mercury Grand Marquis GS 1997 List of elements for Warning System Wiring Diagrams for Mercury Grand Marquis GS 1997: 98 (bady harn, near right "a" pillar) (left cowl panel, near door sill) (police) (right cowl panel, near door sill) *10 **11 *analog **digital Ajar lamp output Autolamp delay Autolamp enable Autolamp ind Autolamp on/off B(+) vbat 4 B+ to module C2026 C2027 C2028 C2029 C255 C262 Circuit breaker 20a Computer data lines system Courtesy lps out Decklid ajar Defogger system Demand lt out Dimming out Dimming output Dlc Dome lamp sw Door handle sw Door locks input Door locks system Driver's ajar sw Except police Exterior lights system Fasten belts input *c251 **c256 Flasher output Flasher pwr in Fuse 15a G200 G203 G203 (right cowl panel, near door sill) Ground Hazard ind Head Headlamp sw Headlamp switch assembly Headlights system Heated backlt sw Hi beam sw input Hi beams out Horn relay output Horns system Hot at all times Hot in accy or run Hot in start or run I/p fuse panel (left side of i/p) Ignition Instrument cluster Instrument cluster system Interior lights system Key in Key warning switch Left front door latch switch Left rear door latch switch Lighting control module (lcm) (left side of i/p) Low beams out Nca Off Panel dim down Panel dim up Panic alarm Park Parklamp output Parklamp sw Pass. ajar sw Police Relay output Right front door latch switch Right rear door latch switch S200 S204 S207 S208 S227 S259 S262 S275 S276 S285 S304 S500 Seat belt switch Seatbelt ind Seatbelt sw Sound tone output (digital only) Tone req or grd Trunk, tailgate, fuel doors system
WIPER/WASHER Wiper/Washer Wiring Diagram for Mercury Grand Marquis GS 1997 List of elements for Wiper/Washer Wiring Diagram for Mercury Grand Marquis GS 1997: 28 (1996-97) (1998) (behind left kick panel) g200 100k ohms 3.3k ohms 4.08k 7.25k Fuse 30a G101 (front of right fender) Hot in acc or run I/p fuse panel (below dash, left of steering column) Int max Int min Multi- function switch Off Off 36.27k ohms Ohms Parked Parking Red Run S112 S207 S266 Wash Windshield washer pump (in fluid reservoir) Windshield wiper motor (top center of firewall) Wiper control module (behind center of of dash, above warning lamp module)
