Diagram sections — 28 (68 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT COMPUTER DATA LINES CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Mercury Mountaineer 2005 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Mercury Mountaineer 2005: 84 (1: microprocessor) (2: pats indicator) (air conditioning harness, near breakout to temperature blend door actuator) (in main harness, near breakout to central junction box) s247 (near breakout to center of dash) s219 +/- A/c clutch relay A/c indicator diode Ambient air temperature sensor (right front of engine compt, near radiator support) Autolamp/ sunload sensor (behind glove box) Battery junction box (bjb) (left side of engine compt, at fender apron) Blend door sig Blower motor ctrl Blower motor relay C220a C228a C228b C270b C270e C270h C3203c Can bus+ Can bus- Central junction box (cjb) (behind left side of dash) Computer data lines system Driver temperature blend door actuator Electronic automatic temperature control (eatc) module (behind center of dash) Feed back voltage Feedback voltage Front blower motor (behind center of dash) Front blower motor speed controller (behind center of dash) Fuse 10 10a Fuse 15 15a Fuse 20 5a Fuse 30 5a Fuse 36 40a Fuse 37 15a Fuse 7 15a G101 (left front of engine compartment) G200 (at right ``a" pillar) G206 (behind center of dash) G300 (at left ``a" pillar) Ground Heater switch out High speed signal Hot at all times Hot in run or start Hot in start or run Hot w/ rear window defrost relay energized Illumination In-vehicle temperature sensor (behind center of dash) Instrument cluster Interior lights system Left Micropro- cessor Passenger temperature blend door actuator (behind right side of dash) Pwr Remote solenoid assembly (behind center of dash) Right Rs1 recir Rs2 defrost Rs3 floor Rs4 panel Rs5 heater ctr vlv Rs5 heater ctrl valve S147 S148 S229 (near breakout to glove box lamp) S232 (near breakout to central junction box) S233 (in main harness, near breakout to data link connector) S242 S243 S317 (in window regulator jumper assembly, near breakout to left rear speaker) Seats system Sig rtn Signal rtn Switch out Switch sig V ref Var speed signal Vbatt Vehicle security module (vsm) (above right rear wheelwell) Vpwr Vref Automatic A/C Wiring Diagram (2 of 2) for Mercury Mountaineer 2005 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Mercury Mountaineer 2005: 54 (at breakout to roof opening panel switch) (in air conditioning harness, near breakout to c3007) s341 (in interior illumination harness, at breakout to c340) s908 (in interior illumination harness, near breakout to c340) s326 0) off 1) low 2) med low 3) med high 4) high 5) ceiling 6) floor 0) off 1) rear 2) low 3) med low 4) med high 5) ceiling 6) floor A/c clutch cycling pressure switch (right side of engine compt) A/c clutch solenoid (at left side of engine) A/c high pressure switch (left front of engine compt) Air bag sliding contact (top of steering column) Audio/ climate control switch Auxiliary a/c relay (behind left side of rear seats) Auxiliary blower motor (left side of cargo area) Auxiliary blower motor resistor assembly (in left rear cargo area) Battery junction box (bjb) (left side of engine compt, at fender apron) C175b C175e C218a C270a C938a C938b C940a C940b Central junction box (cjb) (behind left side of dash) Cool Cruise control system Engine coolant temperature (ect) sensor (4.0l) (top right of engine, near injector harness) Fan dn Fan up Fuse 25 5a Fuse 33 30a G101 (left front of engine compartment) G104 (right rear of engine compt) G400 (left rear of vehicle) Harness, at breakout to c340) Hot at all times Hot in start or run Interior lights system Nca Powertrain control module (pcm) (at right side engine bulkhead) Rear a/c control module (front) (in roof panel) Rear a/c control module (rear) (in roof panel) Rear mode door actuator (behind rear seats) S102 (near breakout to pcm) S135 (in dash panel to engine harness, near breakout to a/c clutch cycling pressure switch) S341 (in air conditioning harness, near breakout to c3007) S903 (near breakout to c340) S906 (in interior illumination harness, at breakout to c340) S907 (at breakout to c340) S910 Temp dn Temp up Temperature blend door actuator (below left rear cargo area window) Warm Manual A/C Wiring Diagram, with Sliding Roof (1 of 2) for Mercury Mountaineer 2005 List of elements for Manual A/C Wiring Diagram, with Sliding Roof (1 of 2) for Mercury Mountaineer 2005: 81 (in main harness, near breakout to central junction box) s249 (in main harness, near breakout to function selector switch assembly) (near breakout to temperature blend door actuator) 87a A/c clutch cycling pressure switch (right side of engine A/c clutch relay A/c clutch solenoid (at left side of engine) A/c demand signal A/c high pressure switch (left front of engine compt) A/c indicator diode Battery junction box (bjb) (left side of engine compt, at fender apron) Blend dr output Blower motor relay Blower motor switch Blower motor to blower sw C175b C175e C220a C270a C270b C270e C270h C294a C294b C294c Central junction box (cjb) (behind left side of dash) Compt) Def Engine coolant temperature sensor (ect) (4.0l) (top right of engine, near injector harness) Except base Exterior lights input Exterior lights system Floor Floor/vent Front blower motor (behind center of dash) Front blower motor resistor assembly (behind center of dash) Function selector switch assembly Fuse 10 10a Fuse 16 5a Fuse 30 5a Fuse 36 40a Fuse 37 15a Fuse 7 15a G101 (left front of engine compartment) G104 (right rear of engine compt) G200 (at right ``a" pillar) G206 (behind center of dash) G300 (at left ``a" pillar) Ground High High speed fan control relay (behind center of dash) Hot at all times Hot in start or run Hot w/ rear window defrost relay energized Illumination Instrument cluster Interior lights system Low Max Med 1 Med 2 Medium Micropro- cessor Mix Mode switch Nca Off Powertrain control module (pcm) (at right side engine bulkhead) Rear window defrost sw S102 (near breakout to powertrain control module) S147 S148 S219 (near breakout to center of dash) S222 S240 (air conditioning harness, near breakout to temperature blend door actuator) S241 S317 (in window regulator jumper assembly, near breakout to left rear speaker) Temperature blend door actuator (below left rear cargo area window) Vbatt Vent Vpwr Manual A/C Wiring Diagram, with Sliding Roof (2 of 2) for Mercury Mountaineer 2005 List of elements for Manual A/C Wiring Diagram, with Sliding Roof (2 of 2) for Mercury Mountaineer 2005: 30 (in air conditioning harness, near breakout to c3007) s339 (in air conditioning harness, near breakout to c3007) s341 (in interior illumination harness, near breakout to c340) 0) off 1) rear 2) low 3) med low 4) med high 5) ceiling 6) floor 1) ceiling 2) floor Auxiliary a/c relay (behind left side of rear seats) Auxiliary blower motor (left side of cargo area) Auxiliary blower motor resistor assembly (in left rear cargo area) Battery junction box (bjb) (left side of engine compt, at fender apron) C270a C938a C938b C940a Central junction box (cjb) (behind left side of dash) Cool Fuse 25 5a Fuse 33 30a G400 (left rear of vehicle) Hot at all times Hot in start or run Interior lights system Rear a/c control module (front) (in roof panel) Rear a/c control module (rear) (in roof panel) Rear mode door actuator (left side of cargo area, behind rear seats) S341 (in air conditioning harness, near breakout to c3007) S903 S908 (in interior illumination harness, at breakout to c340) Temperature blend door actuator (below left rear cargo area window) Warm Manual A/C Wiring Diagram, without Sliding Roof (1 of 2) for Mercury Mountaineer 2005 List of elements for Manual A/C Wiring Diagram, without Sliding Roof (1 of 2) for Mercury Mountaineer 2005: 81 (in main harness, near breakout to central junction box) s249 (in main harness, near breakout to function selector switch assembly) (near breakout to temperature blend door actuator) 87a A/c clutch cycling pressure switch (right side of engine A/c clutch relay A/c clutch solenoid (at left side of engine) A/c demand signal A/c high pressure switch (left front of engine compt) A/c indicator diode Battery junction box (bjb) (left side of engine compt, at fender apron) Blend dr output Blower motor relay Blower motor switch Blower mtr to blower switch C175b C175e C220a C270a C270b C270e C270h C294a C294b C294c Central junction box (cjb) (behind left side of dash) Compt) Def Engine coolant temperature sensor (ect) (4.0l) (top right of engine, near injector harness) Except base Exterior lights input Exterior lights system Floor Floor/vent Front blower motor (behind center of dash) Front blower motor resistor assembly (behind center of dash) Function selector switch assembly Fuse 10 10a Fuse 16 5a Fuse 30 5a Fuse 36 40a Fuse 37 15a Fuse 7 15a G101 (left front of engine compartment) G104 (right rear of engine compt) G200 (at right ``a" pillar) G206 (behind center of dash) G300 (at left ``a" pillar) Ground High High speed fan control relay (behind center of dash) Hot at all times Hot in start or run Hot w/ rear window defrost relay energized Illumination Instrument cluster Interior lights system Low Max Med 1 Med 2 Medium Micropro- cessor Mix Mode switch Nca Off Powertrain control module (pcm) (at right side engine bulkhead) Rear window defrost sw S102 (near breakout to powertrain control module) S147 S148 S219 (near breakout to center of dash) S222 S240 (air conditioning harness, near breakout to temperature blend door actuator) S241 S317 (in window regulator jumper assembly, near breakout to left rear speaker) Temperature blend door actuator (below left rear cargo area window) Vbatt Vent Vpwr Manual A/C Wiring Diagram, without Sliding Roof (2 of 2) for Mercury Mountaineer 2005 List of elements for Manual A/C Wiring Diagram, without Sliding Roof (2 of 2) for Mercury Mountaineer 2005: 36 (in air conditioning harness, near breakout to c3007) s341 (in interior illumination harn, at breakout to c340) s907 (in interior illumination harness, at breakout to c340) (in interior illumination harness, near breakout to c340) s326 (in interior illumination harness, near breakout to c340) s903 (in pia harness, at breakout to roof opening panel switch) s910 (left rear of vehicle) 0) off 1) low 2) med low 3) med high 4) high 5) ceiling 6) floor 0) off 1) rear 2) low 3) med low 4) med high 5) ceiling 6) floor At breakout to c340) Auxiliary a/c relay (behind left side of rear seats) Auxiliary blower motor (left side of cargo area) Auxiliary blower motor resistor assembly (in left rear cargo area) Battery junction box (bjb) (left side of engine compt, at fender apron) C270a C938a C938b C940a C940b Central junction box (cjb) (behind left side of dash) Cool Fuse 25 5a Fuse 33 30a G400 G400 (left rear of vehicle) Hot at all times Hot in start or run Interior lights system Rear a/c control module (front) (in roof panel) Rear a/c control module (rear) (in roof panel) Rear mode door actuator (left side of cargo area, behind rear seats) S339 (in air conditioning harness, near breakout to c3007) S341 (in air conditioning harness, near breakout to c3007) S906 Temperature blend door actuator (below left rear cargo area window) Warm
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram, with IVD for Mercury Mountaineer 2005 List of elements for Anti-lock Brakes Wiring Diagram, with IVD for Mercury Mountaineer 2005: 59 (in dash panel to engine harness, near breakout to left horn) s120 (left front of engine compt) g101 1) break pedal force switch 2) active booster solenoid Abs control module (left front of engine compt) Abs ind Abs test connector (at left side of engine compt) Battery junction box (bjb) (left side of engine compt, at fender apron) Brake booster sensor (on front of brake booster) Brake fluid level switch (mounted on side of master cylinder) Brake pedal position switch (above brake pedal) C175b C220a C220b C270a C270b C270h Can + Can - Central junction box (cjb) (behind left side of dash) Computer data lines system Fuse 10a Fuse 15a Fuse 30a Fuse 40a Fuse 5a Fuse 7.5a G101 (left front of engine compt) Gnd Hot at all times Hot in start or run Illum Ind Instrument cluster Interior lights system Iso Left front wheel speed sensor (at left front wheel) Left rear wheel speed sensor (at left rear wheel) Micro processor Powertrain control module (pcm) (at right side engine bulkhead) Primary brake pressure sensor (on master cylinder) Red Red/ pnk Red/pnk Redundant pedal switch (under left side dash panel) Right front wheel speed sensor (at right front wheel) Right rear wheel speed sensor (at right rear wheel) S171 S173 S200 S201 S264 Secondary brake pressure sensor (on brake booster) Steering position sensor (at top of steering column) Tan Tcs disable Traction control switch Vbatt Vpwr Yaw velocity sensor (below center console) Anti-lock Brakes Wiring Diagram, without IVD for Mercury Mountaineer 2005 List of elements for Anti-lock Brakes Wiring Diagram, without IVD for Mercury Mountaineer 2005: 38 (at left side of engine compt) Abs control module (left front of engine compt) Abs ind Battery junction box (bjb) (left side of engine compt, at fender apron) Brake fluid level switch (mounted on side of master cylinder) Brake pedal position switch (above brake pedal) Brake pressure switch (mounted on master cylinder) C220a C220b C270b C270h Can + Can - Can bus+ Can bus- Central junction box (cjb) (behind left side of dash) Computer data lines system Fuse 10a Fuse 15a Fuse 2a Fuse 30a Fuse 40a Fuse 5a G101 (left front of engine compt) Gnd Hot at all times Hot in start or run Instrument cluster Iso Left front wheel speed sensor (at left front wheel) Micro processor Pressure switch) Rear axle speed sensor (on rear differential) Right front wheel speed sensor (at right front wheel) S120 (in dash panel to engine harness, near breakout to windshield wiper motor) S173 Vbatt Vpwr
ANTI-THEFT Forced Entry Wiring Diagram for Mercury Mountaineer 2005 List of elements for Forced Entry Wiring Diagram for Mercury Mountaineer 2005: 71 (in main harness, near breakout to c238) s246 (in window regulator jumper assembly, near breakout to passenger 1 side impact sensor) s328 (near breakout to passenger 1 side impact sensor) s351 +/- 1/2 3/4 5/6 7/8 9/0 Autolmp sig Battery junction Battery junction box (bjb) (left side of engine compt, at fender apron) Box (bjb) (left side of engine compt, at fender apron) C220b C270e C3203d C3203e C3203f Central junction box (cjb) (behind left side of dash) Computer data lines system Data link connector (dlc) (behind left side of dash) Door ajar sw Door locks system Driver side rear door ajar switch (at rear of left rear door) Exterior lights system Fuse 15a Fuse 20a Fuse 30a Fuse 5a G101 (left front of engine compt) G103 (right front of engine compt) G400 (left rear of vehicle) G401 (at right "d" pillar) G401 (at right ``d" pillar) Glass release Gnd Ground Headlights system Horn relay Horn relay pwr Hot at all times Instrument cluster Key pad switch assembly Lamp pwr Left front door ajar switch (at rear of left front door) Left horn (at left front of engine compartment) Liftgate ajar Liftgate ajar switch (lower center of liftgate) Liftgate glass ajar switch (in center of tailgate) Microprocessor Passenger side rear door ajar switch (at rear of right rear door) Passive anti-theft circuit Power windows system Pwr Red Right front door ajar switch (at rear of right front door) Right horn (at right front of engine compartment) S124 (in dash panel to engine harness, near breakout to c126) S170 S205 S259 S407 S502 S602 Sig rtn Sw input Tan Ubp Vbatt Vehicle security module (vsm) (above right rear wheelwell) Vpwr autolmp relay Passive Anti-theft Wiring Diagram for Mercury Mountaineer 2005 List of elements for Passive Anti-theft Wiring Diagram for Mercury Mountaineer 2005: 23 Autolamp/ sunload sensor (behind glove box) Battery junction box (bjb) (left side of engine compt, at fender apron) C175b C270d C270e C3203f Central junction box (cjb) (behind left side of dash) Door ajar star rly ctrl Fuse 5a G200 (at right ``a" pillar) G300 (at left ``a" pillar) Gnd Hot at all times Hot in start or run Ind ctrl Passive anti-theft transceiver (on steering column) Pats indicator Powertrain control module (pcm) (at right side engine bulkhead) S219 S229 Starter relay Vehicle security module (vsm) (above right rear wheelwell) Vpwr
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Mercury Mountaineer 2005 List of elements for Computer Data Lines Wiring Diagram for Mercury Mountaineer 2005: 45 (above right rear wheelwell) vehicle security module (vsm) (at right "c" pillar) low tire pressure module (at right side engine bulkhead) powertrain control module (pcm) (behind center of dash) electronic automatic temperature control (eatc) module (left side of engine compt) (near breakout for center of dash) (near breakout to audio unit) s228 (near breakout to c238) s246 (near breakout to g100) s110 (near breakout to left front of engine compt) (near breakout to passenger side impact sensor) s351 Abs control module (left front of engine compt) Abs test connector C175b C220b C228b C270f C310a C3203f C341g Can bus + Can bus - Can bus - can bus + Central junction box (cjb) (behind left side of dash) Data link connector (dlc) (behind left side of dash) Driver seat module (in driver's seat) Feps Fuse 24 15a G100 (left front of engine compt) G200 (at right "a" pillar) Hot at all times Instrument cluster Iso Microprocessor Parking aid module (pam) (at right "d" pillar) Restraints control module (below center console) S111 S209 S212 S223 S263 S301 S304 Side of engine compt) abs test connector Ubp
CRUISE CONTROL Cruise Control Wiring Diagram, with IVD for Mercury Mountaineer 2005 List of elements for Cruise Control Wiring Diagram, with IVD for Mercury Mountaineer 2005: 48 Air bag sliding contact (at top of steering column) Air conditioning system Audio/ climate control switch Battery junction box (bjb) (left side of engine compt, at fender apron) Brake pedal position switch (above brake pedal) C175b C175e C175t C218a C220a C220b Can bus+ Can bus- Cancel Computer data lines system Digital transmission range (dtr) sensor (lower left side of automatic transmission) Electronic throttle control (etc) motor (at top of engine) Engine controls system Etc motor, +/- Fuse 15a G104 (right rear of engine compt) Gnd Horn switch Hot at all times Instrument cluster Interior lights system Microprocessor Near breakout to central junction box) Output shaft speed (oss) sensor (a/t: left rear of automatic transmission) Powertrain control module (pcm) (at right side engine bulkhead) Redundant pedal switch (under left side dash panel) Res S101 (in transmission control selector neutral switch harness, near breakout to powertrain control module) S120 (in dash panel to engine harness, near breakout to left horn) S132 S149 S171 S173 Set+ Set- Sig Sig rtn Sig1 Sig2 Speed control indicator Speed control switch Throttle position sensor (tps) (on top of throttle body) Vref Cruise Control Wiring Diagram, without IVD for Mercury Mountaineer 2005 List of elements for Cruise Control Wiring Diagram, without IVD for Mercury Mountaineer 2005: 50 Air bag sliding contact (at top of steering column) Air conditioning system Anti-lock brakes system Audio/ climate control switch Battery junction box (bjb) (left side of engine compt, at fender apron) Brake pedal position switch (above brake pedal) Brake pressure switch (mounted on master cylinder) C175b C175e C175t C218a C220a C220b Can bus+ Can bus- Cancel Computer data lines system Digital transmission range (dtr) sensor (lower left side of automatic transmission) Electronic throttle control (etc) motor (at top of engine) Engine controls system Etc motor, +/- Fuse 15a Fuse 2a G104 (right rear of engine compt) Gnd Horn switch Hot at all times Hot in start or run Instrument cluster Interior lights system Microprocessor Near breakout to central junction box) Output shaft speed (oss) sensor (a/t: left rear of automatic transmission) Powertrain control module (pcm) (at right side engine bulkhead) Res S101 (in transmission control selector neutral switch harness, near breakout to powertrain control module) S120 (in dash panel to engine harness, near breakout to windshield wiper motor) S127 (in dash panel to engine harness, near breakout to a/c clutch cycling pressure switch) S132 S149 Set+ Set- Sig Sig rtn Sig1 Sig2 Speed control indicator Speed control switch Throttle position sensor (tps) (on top of throttle body) Vref
DEFOGGERS Defoggers Wiring Diagram for Mercury Mountaineer 2005 List of elements for Defoggers Wiring Diagram for Mercury Mountaineer 2005: 35 (near breakout to left rear speaker) s317 Automatic a/c Battery junction box (bjb) (left side of engine compt, at fender apron) C220a C228a C270a C270c C270e C294b C402a C402b Central junction box (cjb) (behind left side of dash) Electronic automatic temperature control (eatc) module (behind center of dash) Function selector switch assembly Fuse 10a Fuse 15a Fuse 30a G200 (at right "a" pillar) G401 (at right "d" pillar) G403 (left rear of vehicle) Hot at all times Hot in start or run Instrument cluster Left exterior rear view mirror Manual a/c Micro- Micro- processor Processor Rear window defrost grid Rear window defrost relay Right exterior rear view mirror S216 S415 S502 S602
ENGINE PERFORMANCE
4.0L 4.0L, Engine Performance Wiring Diagram (1 of 4) for Mercury Mountaineer 2005 List of elements for 4.0L, Engine Performance Wiring Diagram (1 of 4) for Mercury Mountaineer 2005: 82 (in dash panel to engine harness, near breakout to (in dash panel to engine harness, near breakout to a/c clutch cycling pressure switch) (in dash panel to engine harness, near breakout to left horn) s168 (in dash panel to engine harness, near breakout to powertrain control module) (in main harness, near breakout to left side of dash) A/c clutch cycling pressure switch) A/c sw Ac demand Accelerator pedal position sensor (under left side of dash) Air conditioning system Anti-theft system Audio unit Battery junction box (bjb) (left side of engine compt, at fender apron) Brake in Brake pressure switch (mounted on master cylinder) C175b C240a C290a Can bus + Can bus - Can vent Cruise control system Data link connector (dlc) (behind left side of dash) Dr ajar Evap pu Evaporative emission (evap) canister vent valve (right rear of vehicle, on frame rail) Feps Fpm Fuse 15a Fuse 20a Fuse 2a Fuse 40a G101 (left front of engine compt) G103 (right front of engine compt) G104 (right rear of (right rear of engine compt) engine compt) G105 (right rear of engine compt) Ground Hot at all times Hot in run or start Iat in Ind ctrl Maf out Mass airflow (maf) sensor (right front of engine compt, on fender) Od off Passive anti-theft transceiver (on steering column) Pcm power diode Pcm power relay Pos 1 Pos 2 Pos 3 Powertrain control module (pcm) (at right side engine bulkhead) Press sw Red Red/pnk Rtn S127 S130 S131 S132 S148 S150 S209 S212 Sens rtn Sig rtn Srs St mtr Starting/charging system Tan Tank press Transmission system (4wd circuit) Tx sig Vapor management valve (left rear of engine compt) Vbatt Vpwr Vref Vss W/ 4x4 W/ audiophile W/o audiophile W/o ivd w/ ivd Windshield wiper motor (at left rear of engine compt) 4.0L, Engine Performance Wiring Diagram (2 of 4) for Mercury Mountaineer 2005 List of elements for 4.0L, Engine Performance Wiring Diagram (2 of 4) for Mercury Mountaineer 2005: 55 (above brake pedal) brake pedal position switch (in transmission control selector neutral switch harness, near breakout to powertrain control module) (on lower left of automatic transmission) transmission solenoid body assembly Abs control module (left front of engine compt) Acc Battery junction box (bjb) (left side of engine compt, at fender apron) C175t C270c Central junction box (cjb) (behind left side of dash) Fuse 5a G103 (right front of engine compt) H2os 12 htr H2os 12 in H2os 22 htr H2os 22 in Hot at all times Hot in run or start Ignition switch Iss Lock Nca Off Oss Pcs a Pcs b Pcs c Positive crankcase ventilation heater (right rear of engine compt) Powertrain control module (pcm) (at right side engine bulkhead) Press ctrl sol a Press ctrl sol b Press ctrl sol c Red/pnk Redundant pedal switch (under left side dash panel) S101 S113 S120 (w/ ivd: in dash panel to engine harness, near breakout to left horn) (w/o ivd: in dash panel to engine harness, near breakout to windshield wiper motor) S173 Shift sol a Shift sol b Shift sol c Shift sol d Sig rtn Ss a Ss b Ss c Ss d Start Tcc sol Transmission control switch Transmission controls system (4wd circuit) Transmission fluid temperature sensor Tss Turbine shaft speed (tss) sensor (a/t) (top left side of automatic transmission) Vref W/ ivd 4.0L, Engine Performance Wiring Diagram (3 of 4) for Mercury Mountaineer 2005 List of elements for 4.0L, Engine Performance Wiring Diagram (3 of 4) for Mercury Mountaineer 2005: 44 (in engine control sensor & fuel charge harness, near breakout to powertrain control module) (in engine control sensor & fuel charge harness, near breakout to heated oxygen sensor) (in transmission control selector neutral switch harness, near breakout to digital transmission range sensor) (lower left side of automatic transmission) digital transmission range (dtr) sensor Battery junction box (bjb) (left side of engine compt, at fender apron) C220a C270a C270f C270h Central junction box (cjb) (behind left side of dash) Check Engine Flex fuel sender module Fuel gauge Fuel pump Fuel pump relay Fuel tank pressure transducer sensor Fuel tank unit (on right frame rail) Fuse 10a Fuse 20a Fuse 5a G101 (left front of engine compt) Heated oxygen sensor (ho2s) 11 (in right exhaust pipe before catalytic converter) Heated oxygen sensor (ho2s) 12 (in left exhaust pipe, after catalytic converter) Heated oxygen sensor (ho2s) 21 (in left exhaust pipe, before catalytic converter) Heated oxygen sensor (ho2s) 22 (in right exhaust pipe, after catalytic converter) Hot at all times Hot in run or start Hot with battery saver relay energized Inertia fuel shutoff (ifs) switch (base of right "a" pillar) Instrument cluster Intermediate shaft speed (iss) sensor (a/t) (top left side Micro- processor N r Nca Of automatic transmission) Output shaft speed sensor (a/t) (left rear Red Red/pnk S100 S102 S103 S146 Sig rtn 4.0L, Engine Performance Wiring Diagram (4 of 4) for Mercury Mountaineer 2005 List of elements for 4.0L, Engine Performance Wiring Diagram (4 of 4) for Mercury Mountaineer 2005: 53 (at right "d" pillar) fuel pump driver module (engine control sensor & fuel charge harness, near breakout to ignition coil) s134 (in engine control sensor & fuel charge harness, near breakout to differential pressure feedback egr sensor) s105 (in engine control sensor & fuel charge harness, near breakout to heated oxygen sensor) s104 (not used) (top of engine) ignition coil C175e Camshaft position sensor (front of right cylinder head) Ckp sens + Ckp sens - Cmp sens Crankshaft position sensor (right front of engine, behind a/c compressor) Dfpegr sens Ect input Egr system module Egrvr Electronic throttle control motor Engine coolant temperature (ect) sensor (top right of engine, near injector harness) Fuel injectors Fuel pres Fuel rail pressure transducer sensor G105 (right rear of engine compt) G401 (at right "d" pillar) Ho2s 11 Ho2s 11 htr Ho2s 21 Ho2s 21 htr Ignition transformer capacitor (at top of engine) Inj 1 Inj 2 Inj 3 Inj 4 Inj 5 Inj 6 Knock sensor (top rear of engine) Ks + Ks - Map Nca Pcm to coil Pcm to t1 Powertrain control module (pcm) (at right side engine bulkhead) Red/pnk Return S106 Sig rtn Sig1 Sig2 Tan Temp Throttle position (tps) sensor (on top of throttle body) V ref Vref
4.6L 4.6L, Engine Performance Wiring Diagram (1 of 4) for Mercury Mountaineer 2005 List of elements for 4.6L, Engine Performance Wiring Diagram (1 of 4) for Mercury Mountaineer 2005: 85 (in dash panel to engine harness, near breakout to (in dash panel to engine harness, near breakout to a/c clutch cycling pressure switch) (in dash panel to engine harness, near breakout to left horn) s168 (in dash panel to engine harness, near breakout to powertrain control module) (in main harness, near breakout to left side of dash) A/c clutch cycling pressure switch) A/c sw Ac demand Accelerator pedal position sensor (under left side of dash) Air conditioning system Air contioning system Anti-theft system Audio unit Battery junction box (bjb) (left side of engine compt, at fender apron) Brake in Brake pressure switch (mounted on master cylinder) C175b C240a C290a Can bus + Can bus - Can vent Cruise control system Data link connector (dlc) (behind left side of dash) Dr ajar Evap pu Evaporative emission (evap) canister vent valve (right rear of vehicle, on frame rail) Feps Fpm Fuse 15a Fuse 20a Fuse 2a Fuse 40a G101 (left front of engine compt) G103 (right front of engine compt) G104 (right rear of engine compt) G105 (right rear of engine compt) Ground Hot at all times Hot in run or start Iat in Ind ctrl Maf out Mass airflow (maf) sensor (right front of engine compt, on fender) Od off Passive anti-theft transceiver (on steering column) Pcm power diode Pcm power relay Pos 1 Pos 2 Pos 3 Powertrain control module (pcm) (at right side engine bulkhead) Press sw Red Red/pnk Rtn S127 S130 S131 S132 S148 S149 S150 S209 S212 Sens rtn Sig ret Sig rtn Srs St mtr Starting/charging system Tan Tank press Transmissions system (4wd circuit) Tx sig Vapor management valve (left rear of engine compartment) Vbatt Vpwr Vref Vss W/ 4x4 W/ audiophile W/o audiophile W/o ivd w/ ivd Windshield wiper motor (left rear of engine compt) 4.6L, Engine Performance Wiring Diagram (2 of 4) for Mercury Mountaineer 2005 List of elements for 4.6L, Engine Performance Wiring Diagram (2 of 4) for Mercury Mountaineer 2005: 49 (above brake pedal) brake pedal position switch (in transmission control selector neutral switch harness, near breakout to powertrain control module) (on lower left of automatic transmission) transmission solenoid body assembly Abs control module (left front of engine compt) Acc Battery junction box (bjb) (left side of engine compt, at fender apron) C175t H2os 12 htr H2os 12 in H2os 22 htr H2os 22 in Hot at all times Ignition switch Iss Lock Nca Off Oss Pcs a Pcs b Pcs c Powertrain control module (pcm) (at right side engine bulkhead) Press ctrl sol a Press ctrl sol b Press ctrl sol c Red/pnk Redundant pedal switch (under left side dash panel) S101 S113 S120 (w/ ivd: in dash panel to engine harness, near breakout to left horn) (w/o ivd: in dash panel to engine harness, near breakout to windshield wiper motor) S173 Shift sol a Shift sol b Shift sol c Shift sol d Sig rtn Ss a Ss b Ss c Ss d Start Tcc sol Transmission control switch Transmission fluid temperature sensor Transmission system Tss Turbine shaft speed (tss) sensor (a/t) (on top left side of automatic transmission) Vref W/ ivd 4.6L, Engine Performance Wiring Diagram (3 of 4) for Mercury Mountaineer 2005 List of elements for 4.6L, Engine Performance Wiring Diagram (3 of 4) for Mercury Mountaineer 2005: 41 (in engine control sensor & fuel charge harness, near breakout to powertrain control module) (in engine control sensor & fuel charge harness, near breakout to heated oxygen sensor) (in transmission control selector neutral switch harness, near breakout to digital transmission range sensor) (lower left side of automatic transmission) digital transmission range (dtr) sensor Battery junction box (bjb) (left side of engine compt, at fender apron) C220a C270f C270h Central junction box (cjb) (behind left side of dash) Check Engine Flex fuel sender module Fuel gauge Fuel pump Fuel pump relay Fuel tank pressure transducer sensor Fuel tank unit (on right frame rail) Fuse 20a Fuse 5a G101 (left front of engine compt) Heated oxygen sensor (ho2s) 11 (in right exhaust pipe, before catalytic converter) Heated oxygen sensor (ho2s) 12 (in left exhaust pipe, after catalytic converter) Heated oxygen sensor (ho2s) 21 (in left exhaust pipe, before catalytic converter) Heated oxygen sensor (ho2s) 22 (in right exhaust pipe, after catalytic converter) Hot at all times Hot in run or start Inertia fuel shutoff (ifs) switch (at base of right "a" pillar) Instrument cluster Intermediate shaft speed (iss) sensor (a/t) (top left side Micro- processor N r Nca Of automatic transmission) Output shaft speed sensor (a/t) (left rear Red Red/pnk S100 S102 S103 S146 Sig rtn 4.6L, Engine Performance Wiring Diagram (4 of 4) for Mercury Mountaineer 2005 List of elements for 4.6L, Engine Performance Wiring Diagram (4 of 4) for Mercury Mountaineer 2005: 67 (at right "d" pillar) fuel pump driver module (in engine control sensor & fuel charge harness, near breakout to differential pressure feedback egr sensor) (in engine control sensor & fuel charge harness, near breakout to fuel injector 3) s108 (in engine control sensor & fuel charge harness, near breakout to fuel injector 7) (in engine control sensor & fuel charge harness, near breakout to heated oxygen sensor) C175e Camshaft position sensor (on front of right cylinder head) Ckp sens + Ckp sens - Cmp sens Coil on plug Cop 1 Cop 2 Cop 3 Cop 4 Cop 5 Cop 6 Cop 7 Cop 8 Crankshaft position sensor (on right front of engine, behind a/c compressor) Cyl temp Cylinder head temperature sensor (top front of cylinder head) Dfpegr sens Egr system module (at top of engine) Egrvr Electronic throttle control motor (at top of engine) Fuel pres Fuel rail pressure transducer sensor (at top rear of engine) G105 (right rear of engine compt) G401 (at right "d" pillar) Harness, near breakout to fuel injector 4) Ho2s 11 Ho2s 11 htr Ho2s 21 Ho2s 21 htr Ignition transformer capacitor 1 (in engine compt) Ignition transformer capacitor 2 (in engine compt) Inj 1 Inj 2 Inj 3 Inj 4 Inj 5 Inj 6 Inj 7 Inj 8 Injec- tors Knock sensor (at rear of engine) Ks + Ks - Map Nca Powertrain control module (pcm) (at right side engine bulkhead) Red/pnk Return S104 S105 S106 S107 S109 Sig rtn Sig1 Sig2 Tan Tan/red Throttle position (tps) sensor (top of throttle body) V ref Vref
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Mercury Mountaineer 2005 List of elements for Back-up Lamps Wiring Diagram for Mercury Mountaineer 2005: 17 (in rear lamp connector harness, near breakout to parking aid speaker) s401 (in window regulator jumper assembly, near breakout to driver safety belt buckle switch) s309 Autodimming interior mirror unit C270a Central junction box (cjb) (behind left side of dash) Digital transmission range (dtr) sensor (lower left side of automatic transmission) Fuse 7.5a G400 (left rear of vehicle) G401 (at right "d" pillar) Hot in run or start Left reversing lamp Parking aid module (pam) (at right "d" pillar) Rear auxiliary junction box (ajb) (at right "d" pillar) Reversing lamp trailer tow relay Right reversing lamp S400 S404 Exterior Lamps Wiring Diagram for Mercury Mountaineer 2005 List of elements for Exterior Lamps Wiring Diagram for Mercury Mountaineer 2005: 77 "a" pillar) g200 (in dash panel to engine harness, near breakout to left horn) s122 (manual a/c) function selector switch assembly (near breakout for center of dash) s307 (near breakout to central junction box) s224 (near breakout to data link connector) (near breakout to left rear park/stop /turn lamp) s405 (near breakout to left repeater lamp) s136 (near breakout to right reversing lamp) s402 (near breakout to to central junction box) s203 (right "d" pillar) rear auxiliary junction box (ajb) Auto off Battery junction box (bjb) (left side of engine compt, at fender apron) Brake pedal position switch (above brake pedal) C202b C205a C205b C220a C220b C270a C270d C294b C3203e Central junction box (cjb) (behind left side of dash) Fuse 15a Fuse 5a G101 (left front of engine compartment) G103 (right front of engine compartment) G400 (left rear of vehicle) G401 (at right "d" pillar) Hazard Head High mounted stoplamp Hot at all times Hot in run or start Indicator flasher relay Instrument cluster Left front park/ turn lamp Left front side lamp Left license plate lamp Left re- peater lamp Left rear park/ stop/ turn lamp Left rear side lamp Left tail lamp Left turn Left turn signal ind Left turn trailer tow relay Main light switch Micro- processor Multi-function switch Nca Park Parking lamp trailer tow relay Pwr Right front park/ turn lamp Right front side lamp Right license plate lamp Right re- peater lamp Right rear park/ stop/ turn lamp Right rear side lamp Right tail lamp Right turn Right turn signal ind Right turn trailer tow relay S120 (near breakout to windshield wiper motor) S126 S137 (near breakout to ambient air temperature sensor) S138 S173 S204 S217 (near breakout to center of dash) S250 S251 S259 S407 Trailer electronic brake control module (early production) (behind right side of dash) Vehicle security module (vsm) (above right rear wheelwell) Trailer Tow Wiring Diagram for Mercury Mountaineer 2005 List of elements for Trailer Tow Wiring Diagram for Mercury Mountaineer 2005: 34 Back-up lamps circuit Battery charge trailer tow relay Battery junction box (bjb) (left side of engine compt, at fender apron) Brake pedal position switch (above brake pedal) C270a Central junction box (cjb) (behind left side of dash) Class ii Class iii/iv Exterior lamps circuit Fuse 15a Fuse 20a Fuse 30a Fuse 40a Fuse 5a G103 (right front of engine compartment) G200 (at right "a" pillar) G401 (at right "d" pillar) Hot at all times Hot in run or start Left turn trailer tow relay Nca Parking lamp trailer tow relay Rear auxiliary junction box (ajb) (right "d" pillar) Reversing lamp trailer tow relay Right turn trailer tow relay S120 (w/ ivd: near breakout to left horn) (w/o ivd: near breakout to windshield wiper motor) S121 S173 S216 S410 S412 Trailer electronic brake control module (behind right side of dash) Trailer tow connector (class ii) (at rear of vehicle, below bumper) Trailer tow connector (class iii/iv) (at rear of vehicle, below bumper)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Mercury Mountaineer 2005 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Mercury Mountaineer 2005: 60 (at right side of engine compartment) engine compartment relay box (ends in harness) abs test connector (left side of engine compartment, at fender apron) battery junction box (bjb) (left side of engine compt, at fender apron) battery junction box (bjb) 4.0l 4.6l 87a A/c clutch cycling pressure switch A/c clutch solenoid A/c high pressure switch A/c indicator diode Abs control module Blower motor relay Brake fluid level switch C175b Daytime running lamps (drl) relay Explorer Fog lamp relay Fuel pump relay G101 (left front of engine compartment) G103 (right front of engine compartment) G104 (right rear of engine compartment) G105 (right rear of engine compartment) G109 (in engine compartment) Harness, near breakout to right side of engine compt) High beam relay Ignition relay Left front fog lamp Left front high beam lamp Left front low beam lamp Left front park/turn lamp Left front side lamp Left headlamp Left horn Left repeater lamp Left turn trailer tow relay Mass air flow (maf) sensor Mountaineer Nca Near breakout to c1168) Pcm power relay Positive crankcase ventilation heater Powertrain control module (pcm) Right front fog lamp Right front high beam lamp Right front low beam lamp Right front park/turn lamp Right front side lamp Right headlamp Right horn Right repeater lamp Right turn trailer tow relay S126 (in dash panel to engine harness, near breakout to g103) S135 (in dash panel to engine harness, near breakout to a/c clutch cycling pressure switch) S138 (in dash panel to headlamp junction extension harness, near breakout to left headlamp) S139 (in dash panel to headlamp junction extension harness, near breakout to right headlamp) Shield Transfer case high to low relay Transfer case low to high relay Windshield wiper motor Ground Distribution Wiring Diagram (2 of 4) for Mercury Mountaineer 2005 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Mercury Mountaineer 2005: 71 (in radio jumper harness, near breakout to c237) (manual a/c) (manual a/c) function selector switch assembly (w/ audiophile) subwoofer amplifier (w/ base) audio unit (w/o audiophile) (w/ audiophile) Adjustable pedal switch Audio unit Autolamp/ sunload sensor Brake shift interlock C202a C205a C205b C220a C220b C228b C240b C290a C294b C294c C310a C341g Console 1 power point Console 2 power point Data link connector (dlc) Driver safety belt buckle switch Driver seat module Dvd player Electronic automatic temperature control (eatc) module Electronic compass Four- wheel drive switch Front blower motor resistor assembly Front blower motor speed controller Front cigar lighter Function selector switch assembly G200 (at right "a" pillar) G204 (at right "a" pillar) G205 (under center console) G206 (behind center of dash) G300 (at left "a" pillar) G301 (under center console) Glove box lamp High speed fan control relay Instrument cluster Main light switch Memory set switch Message center switch Multi- function switch Nca Parking aid disable switch Passenger safety belt buckle switch Passive anti-theft transceiver Red Restraints control module S204 (in main harness, near breakout to central junction box) S215 (in main harness, near breakout to center of dash) S216 (in main harness, near breakout to center of dash) S219 (in main harness, near breakout to center of dash) S223 (in main harness, near breakout to center of dash) S240 (air conditioning harness, near breakout to temperature blend door actuator) S267 (in radio jumper harness, near breakout to c237) S333 (in window regulator jumper assembly, near breakout to restraints control module) Temperature blend door actuator Traction control switch Trailer electronic brake control module W/ audiophile W/ automatic a/c W/ base rse W/ dvd W/ manual a/c W/o dvd Ground Distribution Wiring Diagram (3 of 4) for Mercury Mountaineer 2005 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Mercury Mountaineer 2005: 48 Battery C3203d Class ii Class iii/iv Data link connector (dlc) Daytime running lamps (drl) module Digital transmission range (dtr) sensor Driver side door lock switch Explorer Exterior rear view mirror switch Fuel pump driver module G100 (left front of engine compartment) G102 (left front of engine compartment) G106 (left front of engine compartment) G107 (4.6l: lower left side of engine) G401 (at right "d" pillar) Key pad switch assembly Left exterior rear view mirror Left front door ajar switch Low tire pressure module Memory set switch Mountaineer Nca Parking aid module (pam) Passenger side front door lock unit Passenger side rear door ajar switch Passenger side seat back heater Rear auxiliary junction box (ajb) (at right "d" pillar) Right exterior rear view mirror Right front door ajar switch Right power seat switch Right rear park/stop/ turn lamp Right rear side lamp Right reversing lamp Right tail lamp S125 (in dash panel to engine harness, near breakout to g100) S400 (in rear lamp connector harness, near breakout to right rear park/ stop/turn lamp) S410 (in suspension leveling compressor harness, in breakout to c405) S502 (in window regulator jumper assembly, near breakout to driver's side door lock switch) S602 (in window regulator jumper assembly, near breakout to right exterior rear view mirror) Shield Trailer tow battery charge relay Trailer tow connector Trailer tow parking lamp relay Trailer tow reversing lamp relay Vehicle security module Washer fluid level switch Windshield wiper motor Ground Distribution Wiring Diagram (4 of 4) for Mercury Mountaineer 2005 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Mercury Mountaineer 2005: 67 (behind left side of dash) central junction box (cjb) (w/ memory) driver seat module (w/o memory) Adjustable pedal switch At breakout to c340) Auto- dimming interior mirror unit Auxiliary a/c relay C341e C402b C504a C912a C912b C938a C938b C940a Cargo lamp assembly Driver side rear door ajar switch Driver side seat back heater Explorer Front Front interior/ map lamps assembly G400 (left rear of vehicle) G403 (left rear of vehicle) High mounted stoplamp Homelink module Indicator flasher relay Interior/map lamp assembly Left front lumbar adjust switch Left license plate lamp Left power seat switch Left rear park/stop/ turn lamp Left rear side lamp Left reversing lamp Left tail lamp Left vanity mirror lamp Liftgate ajar switch Liftgate door lock switch Liftgate glass actuator Liftgate glass release switch Link connector) Master window adjust switch Mountaineer Nca Parking brake switch Rear a/c control module Rear a/c control module (front) Rear interior/map lamp assembly Rear window defrost grid Rear wiper motor assembly Right license plate lamp Right vanity mirror lamp Roof opening panel motor assembly Roof opening panel switch S341 (in air conditioning harness, near breakout to c3007) S352 (in window regulator jumper assembly, near breakout to left power seat switch) S404 (in rear lamp connector harn, near breakout to c421) S404 (in rear lamp connector harness, near breakout to c421) S407 (at tailgate warning switch harness, in breakout to c494) S415 (in rear window wiper motor feed harness, near breakout to rear wiper motor assembly) S900 (in interior lamps harness, near breakout to left vanity mirror lamp) S903 (in interior illumination harness, near breakout to c340) S911 (in pia harness, at breakout to roof opening panel switch) Temperature blend door actuator W/ medium overhead console W/ overhead console W/o medium overhead console W/o overhead console
HEADLIGHTS Headlights Wiring Diagram for Mercury Mountaineer 2005 List of elements for Headlights Wiring Diagram for Mercury Mountaineer 2005: 51 (in dash panel to engine harness, near breakout to c126) s123 (in dash panel to engine harness, near breakout to g100) s133 (in main harness, near breakout to central junction box) s260 (not used) Air conditioning system Anti-theft system Auto Autolamp/ sunload sensor (behind glove box) Battery junction box (bjb) (left side of engine compt, at fender apron) C202c C205a C220b C3203e Exterior lights system Fog lamp relay Fog lamp switch Fuse 10a Fuse 15a Fuse 20a G101 (left front of engine compt) G103 (right front of engine compt) G200 (at right ``a" pillar) Head Headlamp relay High beam ind High beam relay Hot at all times Instrument cluster Left front fog lamp Left headlamp Main light switch Microprocessor Multi-function switch Off Park Pass Pats ind Right front fog lamp Right headlamp S117 S126 S138 S139 S203 (in main harness, near breakout to central junction box) S204 S205 S229 S252 (in main harness, near breakout to central junction box) S259 Vehicle security module (vsm) (above right rear wheelwell) W/ autolamps
HORN Horn Wiring Diagram for Mercury Mountaineer 2005 List of elements for Horn Wiring Diagram for Mercury Mountaineer 2005: 24 (in dash panel to engine harness, near breakout to c126) s124 20a Air bag sliding contact (at top of steering column) Air conditioning system Battery junction box (bjb) (left side of engine compt, at fender apron) C175b C218a C3203e Fuse 28 G101 (left front of engine compt) G103 (right front of engine compt) Horn relay Horn switch Hot at all times Left horn (at left front of engine compt) Low tire pressure module (at right "c" pillar) Nca Powertrain control module (pcm) (at right side engine bulkhead) Right horn (at right front of engine compt) S170 S172 (near breakout to windshield wiper motor) S328 (near breakout to passenger 1 side impact sensor) Speed control switch Vehicle security module (vsm) (above right rear wheelwell)
INSTRUMENT CLUSTER
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram, Base for Mercury Mountaineer 2005 List of elements for Courtesy Lamps Wiring Diagram, Base for Mercury Mountaineer 2005: 47 (at right "d" pillar) g401 Accessory delay relay Battery junction box (bjb) (left side of engine compt, at fender apron) Battery saver relay C205b C220a C270a C270d C270e C270h Cargo lamp assembly Central junction box (cjb) (behind left side of dash) Closed Defeat Front interior/ map lamps assembly Fuel tank unit (on right frame rail) Fuse 10a Fuse 15a G200 (at right "a" pillar) G400 (left rear of vehicle) Glove box lamp Hot at all times Instrument cluster Interior Interior lamp Interior lamp relay Left exterior rear view mirror Liftgate open Main light switch Map lamps Microprocessor Nca Off Open Puddle lamp Rear interior/ map lamps assembly Right exterior rear view mirror S204 S218 (in main harness, near breakout to center of dash) S229 S232 (w/ dual zone eatc) S350 (in window regulator jumper assembly, near breakout to driver safety belt buckle switch) S502 S602 S903 S904 (in interior illumination harness, near breakout to c340) W/o overhead console Courtesy Lamps Wiring Diagram, Except Base (1 of 2) for Mercury Mountaineer 2005 List of elements for Courtesy Lamps Wiring Diagram, Except Base (1 of 2) for Mercury Mountaineer 2005: 36 interior lamp relay Accessory delay relay Battery junction box (bjb) (left side of engine compt, at fender apron) Battery saver relay C205b C220a C270a C270d C270e C270h Central junction box (cjb) (behind left side of dash) Closed Defeat Fuel tank unit (on right frame rail) Fuse 10a Fuse 15a G200 (at right "a" pillar) G401 (at right "d" pillar) Glove box lamp Hot at all times Instrument cluster Interior Left exterior rear view mirror Main light switch Microprocessor Nca Open Puddle lamp Right exterior rear view mirror S204 S218 (in main harness, near breakout to center of dash) S229 S232 (w/ dual zone eatc) S350 (in window regulator jumper assembly, near breakout to driver safety belt buckle switch) S502 S602 Courtesy Lamps Wiring Diagram, Except Base (2 of 2) for Mercury Mountaineer 2005 List of elements for Courtesy Lamps Wiring Diagram, Except Base (2 of 2) for Mercury Mountaineer 2005: 18 (left rear of vehicle) Front interior/ map lamps assembly G400 G400 (left rear of vehicle) Gnd Homelink module Interior lamp Left vanity mirror lamp Map lamps Off Right vanity mirror lamp S900 S901 (in interior lamps harness, near breakout to left vanity mirror lamp) S911 S912 Vpwr W/ medium overhead console W/o medium overhead console Instrument Illumination Wiring Diagram for Mercury Mountaineer 2005 List of elements for Instrument Illumination Wiring Diagram for Mercury Mountaineer 2005: 67 (in main harness, near breakout to audio unit) s225 (in main harness, near breakout to central junction box) Adjustable pedal switch Air bag sliding contact (at top of steering column) Audio Audio unit Audio/ climate control switch Audiophile Autolamp Base audio Battery junction box (bjb) (left side of engine compt, at fender apron) Bulbs C205a C205b C218a C220b C2237) C228a C228b C240b C290a C294b C938a C940a Driver side door lock switch Dvd player Eatc Electronic automatic temperature control (eatc) module (behind center of dash) Exterior lights system Four-wheel drive switch Function selector switch assembly Fuse 15a G200 (at right "a" pillar) G204 (at right "a" pillar) G300 (at left "a" pillar) G400 G400 (left rear of vehicle) G401 (at right "d" pillar) Head Hot at all times Instru- ment cluster Main light switch Manual a/c Message center switch Microprocessor Park off Parking aid disable switch Passenger side front door lock unit Rear a/c control module (front) (in roof panel) Rear a/c control module (rear) (w/o roof opening panel) (in roof panel) S203 S204 S216 S219 S223 S229 S259 S267 S349 (in seat control feed jumper harness, near breakout to right front speaker) S502 S602 S903 S908 S909 (in interior illumination harness, at breakout to c340) Speed control switch Traction control switch W/ dvd player
MEMORY SYSTEMS Adjustable Pedal Wiring Diagram for Mercury Mountaineer 2005 List of elements for Adjustable Pedal Wiring Diagram for Mercury Mountaineer 2005: 37 (at right ``a" pillar) g200 (near breakout to c3052) s302 (near breakout to data link connector) s221 (near breakout to left power seat switch) s303 (not used) (under center console) g301 Adj pedal mtr Adj pedal pot Adj pedal sw Adjustable pedal memory potentiometer (under driver's side of dash) Adjustable pedal motor (on pedal assembly, left of brake pedal) Adjustable pedal switch C270a C341e C341f C341g C353a Central junction box (cjb) (behind left side of dash) Driver seat module (in driver's seat) Forward Fuse 30a G400 (left rear of vehicle) Ground Hot at all times Interior lights system Left power seat motor assembly (in driver seat) Lumbar) Memory seats circuit Memory set sw Pos sens + Pos sens - Power Rearward Red S305 (w/ power S333 S352 Driver"s Memory Seat Wiring Diagram for Mercury Mountaineer 2005 List of elements for Driver"s Memory Seat Wiring Diagram for Mercury Mountaineer 2005: 53 (in seat control feed jumper harness, near breakout to c3052) (near breakout to left power seat switch) Adj pedal mtr Adj pedal pot Adj pedal sw Adjustable pedal circuit C270a C270e C341e C341f C341g C353a C353b Central junction box (cjb) (behind left side of dash) Computer data lines system Driver seat module (in driver's seat) Front Front hght sens Front up/down Fuse 30a Fuse 5a Fwd G301 (under center console) G400 (left rear of vehicle) G401 (at right ``d" pillar) Ground Horiz sens Hot at all times Left power seat motor assembly (in driver seat) Left power seat switch Memory set sw Memory set switch Nca Pos sense + Pos sense - Power Pwr seat motor Pwr seat sw Rear Rear hgt sens Rear up/down Red Rwd S302 S303 S305 (w/ power lumbar) S333 S352 S502 Seat Seat fwd/rwd Set Ubp diag
NAVIGATION Parking Assistant Wiring Diagram for Mercury Mountaineer 2005 List of elements for Parking Assistant Wiring Diagram for Mercury Mountaineer 2005: 41 (at left side of rear bumper) left outer parking aid sensor (at right side of rear bumper) (in breakout to inner right parking aid sensor) s408 (in breakout to inner right parking aid sensor) s409 C270a C270e Central junction box (cjb) (behind left side of dash) Computer data lines system Digital transmission range (dtr) sensor (lower left side of automatic transmission) Exterior lights system Exterior lights, mirrors systems Fuse 26 7.5a Fuse 27 7.5a G200 (at right ``a" pillar) G401 (at right ``d" pillar) Ground Hot in start or run Interior lights system Iso Left inner parking aid sensor (at left side of rear bumper) Left inner sensor input Left outer sensor input On/off signal Parking aid disable switch Parking aid module (pam) (at right ``d" pillar) Parking aid speaker Pnk Power Rear sounder (+) Rear sounder (-) Reverse input Right inner parking aid sensor (at right side of rear bumper) Right inner sensor input Right outer parking aid sensor Right outer sensor input S204 S400 S401 (near breakout to parking aid speaker) Sensor power Sensor return Status led
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Mercury Mountaineer 2005 List of elements for Power Distribution Wiring Diagram (1 of 4) for Mercury Mountaineer 2005: 74 (diagram 3 of 4) (in dash panel to engine harness, near breakout to right side of engine compt) (in window regulator jumper assembly, near breakout to c3134) s313 (left side of engine compt, at fender apron) battery junction box (bjb) Abs control module Adjustable pedal switch Auxiliary a/c relay Auxiliary junction box (ajb) Battery Battery junction box (bjb) (left side of engine compartment, at fender apron) Battery junction box (bjb) (left side of engine compt, at fender apron) Blower motor relay C1035a C1035b C175b C205a C270c C3203e Central junction box (cjb) (behind left side of dash) Circuit breaker 30a Console 1 power point (in center console) Console 2 power point (in center console) Daytime running lamps (drl) module Engine compartment relay box (at right side of engine compartment) From b fuse 6 (bjb) (diagram 1 of 4) From fuse 8 (bjb) (diagram 1 of 4) Fuel pump relay Fuse 10a Fuse 15a Fuse 20a Fuse 30a Fuse 40a Fuse 50a Fuse 5a Fuse 60a G200 (at right ``a'' pillar) Generator Harness, near breakout to joint connector 1) s170 Horn relay Ignition relay Left turn trailer tow relay Main light switch Nca Parking lamp trailer tow relay Pcm power relay Powertrain control module (pcm) Rear auxiliary junction box (ajb) (at right ``d" pillar) Rear window defrost relay Rear wiper motor assembly Red Regulator jumper assembly, near breakout to g401) s412 Reversing lamp trailer tow relay Right power seat switch Right turn trailer tow relay S116 S119 S143 (at battery cable assembly, near breakout to battery junction box) S216 Starter motor Starter relay Tan/ (in main harness, near breakout to central junction box) s259 To accessory delay relay (cjb) (diagram 3 of 4) To fuse 10 (cjb) To fuse 11 (bjb) (diagram 1 of 4) To fuse 15 (bjb) (diagram 3 of 4) To fuse 16 (cjb) (diagram 4 of 4) To fuse 26 (bjb) (diagram 1 of 4) To fuse 5 (cjb) (diagram 3 of 4) To ignition switch (diagram 2 of 4) Trailer electronic brake control module Trailer tow battery charge relay Transfer case high to low relay Transfer case low to high relay Vehicle security module (vsm) Power Distribution Wiring Diagram (2 of 4) for Mercury Mountaineer 2005 List of elements for Power Distribution Wiring Diagram (2 of 4) for Mercury Mountaineer 2005: 69 (diagram 4 of 4) (in engine control sensor & fuel charge harness, near breakout to fuel injector 4) s107 (in engine control sensor & fuel charge harness, near breakout to fuel injector 7) s109 (in main harness, near breakout to central junction box) s207 (w/ audiophile) (w/o audiophile) 4.0l 4.6l Abs control module Abs test connector Acc Audio unit Battery junction box (bjb) (left side of engine compt, at fender apron) Brake pressure switch Brake shift interlock Breakout to ignition coil) C220a C220b C240b C270a C270b C270d C270e C270f C270g C270h C290a C310a Central junction box (cjb) (behind left side of dash) Coil on plug (cop) 1 Coil on plug (cop) 2 Coil on plug (cop) 3 Coil on plug (cop) 4 Coil on plug (cop) 5 Coil on plug (cop) 6 Coil on plug (cop) 7 Coil on plug (cop) 8 Connector 1) s113 Digital digital transmission transmission range (dtr) sensor Electronic compass From fuse 23 (bjb) (diagram 1 of 4) From s207 (diagram 2 of 4) Fuse 10a Fuse 15a Fuse 2a Fuse 5a Ignition coil Ignition relay Ignition switch Ignition transformer capacitor Ignition transformer capacitor 1 Ignition transformer capacitor 2 Indicator flasher relay Instrument cluster Key in ignition switch Key removal inhibit solenoid Lock Nca Off Pcm power diode Pcm power relay Rear wiper motor assembly Red Restraints control module Run Start To fuse 25 (cjb) j To s113 (diagram 2 of 4) Windshield wiper motor Power Distribution Wiring Diagram (3 of 4) for Mercury Mountaineer 2005 List of elements for Power Distribution Wiring Diagram (3 of 4) for Mercury Mountaineer 2005: 61 (behind left side of dash) central junction box (cjb) (in dash panel to engine harness, near breakout to joint connector 1) s171 (in main harness, near breakout to central junction box) s205 (in main harness, near breakout to central junction box) s232 (in radio jumper harness, near breakout to c2238) s266 (left side of engine compartment, at fender apron) battery junction box (bjb) A/c clutch relay Accessory delay relay Audio unit Battery junction box (bjb) (left side of engine compartment, at fender apron) Brake pedal position switch C175b C202c C205a C220a C228b C240b C270a C270b C270c C270d C270g C3203e Driver seat module Dvd player Electronic automatic temperature control (eatc) module From circuit breaker 62 (bjb) (diagram 1 of 4) From fuse 1 (bjb) (diagram 1 of 4) From fuse 23 (bjb) (diagram 1 of 4) From ignition relay (bjb) (diagram 1 of 4) Fuse 10a Fuse 15a Fuse 20a Fuse 30a High beam relay Indicator flasher relay Instrument cluster Left front lumbar adjust switch Left power seat switch Main light switch Multi-function switch Nca Powertrain control module Rear window defrost relay Red Redundant pedal switch Roof opening panel motor assembly S149 S305 Subwoofer amplifier To fuse 11 (cjb) (diagram 4 of 4) Vehicle security module (vsm) W/ audiophile W/ dual zone eatc W/ dvd player W/ ivd W/ memory W/ power lumber W/o audiophile W/o memory Windshield wiper motor Power Distribution Wiring Diagram (4 of 4) for Mercury Mountaineer 2005 List of elements for Power Distribution Wiring Diagram (4 of 4) for Mercury Mountaineer 2005: 65 (behind left side of dash) central junction box (cjb) (in main harness, near breakout to central junction box) s247 (in rear axle shifter motor control switch extension harness, in breakout to traction control switch) s264 Accessory delay relay Auto-dimming interior mirror unit Autolamp/ sunload sensor Auxiliary a/c relay Battery charge trailer tow relay Battery saver relay Brake shift interlock C228b C270a C270b C270c C270d C270e C270f C270g C270h C294a C294b C3203e C341g C938a Data link connector (dlc) Daytime running lamps (drl) module Digital transmission range (dtr) sensor Driver seat module Driver side seat heater switch Electronic automatic temperature control (eatc) module Exterior rear view mirror switch Four- wheel drive switch From fuse 10 (cjb) (diagram 3 of 4) From fuse 17 (cjb) (diagram 4 of 4) From fuse 22 (cjb) (diagram 2 of 4) From fuse 26 (cjb) (diagram 4 of 4) From fuse 29 (bjb) (diagram 1 of 4) Front cigar lighter Function selector switch assembly Fuse 15a Fuse 20a Fuse 5a Fuse 7.5a G200 (at right ``a" pillar) Harness, near breakout to c2126) s263 Left power seat switch Low tire pressure module Nca Neutral tow indicator Parking aid module (pam) Passenger side seat heater switch Passive anti-theft transceiver Positive crankcase ventilation heater Rear a/c control module Rear auxiliary junction box (ajb) (at right ``d" pillar) Red S216 Temperature blend door actuator To fuse 20 (cjb) (diagram 4 of 4) To fuse 27 (cjb) (diagram 4 of 4) Traction control switch Transmission control switch Vehicle security module (vsm) W/ dual zone eatc W/ manual a/c
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Mercury Mountaineer 2005 List of elements for Power Door Locks Wiring Diagram for Mercury Mountaineer 2005: 53 (near breakout to c3134) s315 (near breakout to c3134) s318 (near breakout to driver safety belt buckle switch) 1/2 3/4 5/6 7/8 9/0 Battery junction box (bjb) (left side of engine compt, at fender apron) C270e C3203d C3203e C3203f Central junction box (cjb) (behind left side of dash) Door lock/ unlock relay Driver door unlock relay Driver side door lock switch Fuse 15a Fuse 20a Fuse 30a Fuse 5a G400 (left rear of vehicle) G401 (at right "d" pillar) G401 (at right ``d" pillar) Ground Hot at all times Interior lights system Key pad switch assembly Left front door lock actuator (at rear of left front door) Left rear door lock actuator (at rear of left rear door) Liftgate door lock switch (at left rear corner of vehicle) Liftgate lock actuator (on center of liftgate) Lock Lock relay Microprocessor Passenger side front door lock unit Pwr Red Right front door lock actuator (at rear of right front door) Right rear door lock actuator (at rear of right rear door) S205 S259 S308 S312 (near breakout to passenger's safety belt buckle switch) S502 S602 Sig rtn Unlk Unlock relay Vbatt Vehicle security module (vsm) (above right rear wheelwell) Vpwr Vref
POWER MIRRORS Electronic Day/Night Mirror Wiring Diagram for Mercury Mountaineer 2005 List of elements for Electronic Day/Night Mirror Wiring Diagram for Mercury Mountaineer 2005: 12 Auto-dimming interior mirror unit C270a Central junction box (cjb) (behind left side of dash) Digital transmission range (dtr) sensor (lower left side of automatic transmission) Exterior lights system Fuse 7.5a G400 (left rear of vehicle) Gnd Hot in start or run S309 (in window regulator jumper assembly, near breakout to driver safety belt buckle switch) S900 Vpwr Power Mirrors Wiring Diagram for Mercury Mountaineer 2005 List of elements for Power Mirrors Wiring Diagram for Mercury Mountaineer 2005: 20 C270a Central junction box (cjb) (behind left side of dash) Defogger system Down Exterior rear view mirror switch Fuse 5a G401 (at right ``d" pillar) Hot at all times Interior lights system Left Left exterior rear view mirror Left/ right Mirror select Puddle lamp Red Right Right exterior rear view mirror S501 (in window regulator jumper assembly, near breakout to driver's side door lock switch) S502 Up/ down m
POWER SEATS Adjustable Pedal Wiring Diagram for Mercury Mountaineer 2005 List of elements for Adjustable Pedal Wiring Diagram for Mercury Mountaineer 2005: 13 Adjustable pedal motor (on pedal assembly, left of brake pedal) Adjustable pedal switch Battery junction box (bjb) (left side of engine compt, at fender apron) Fuse 30a Fwd G200 (at right "a" pillar) G400 (left rear of vehicle) Hot at all times Interior lights system Red Rwd S221 S313 Driver Power Seat Wiring Diagram for Mercury Mountaineer 2005 List of elements for Driver Power Seat Wiring Diagram for Mercury Mountaineer 2005: 18 C270a Central junction box (cjb) (behind left side of dash) Dn up Entire seat Forward/rearward Front of seat Fuse 30a G400 (left rear of vehicle) Hot at all times Left power seat motor assembly (in driver seat) Left power seat switch Nca Rear of seat Red Rwd fwd S305 (w/ power lumbar) Up/down front Up/down rear Heated Seats Wiring Diagram for Mercury Mountaineer 2005 List of elements for Heated Seats Wiring Diagram for Mercury Mountaineer 2005: 18 (in seat control feed jumper harness, near breakout to c3051) s348 (in seat control feed jumper harness, near breakout to left power seat switch) s314 C228b C270a Central junction box (cjb) (behind left side of dash) Driver side seat back heater (in driver seat) Driver side seat cushion heater (in driver seat) Driver side seat heater switch Electronic automatic temperature control (eatc) module (behind center of dash) Fuse 20a G400 (left rear of vehicle) G401 (at right "d" pillar) Hot in start or run Nca Passenger side seat back heater (in passenger seat) Passenger side seat cushion heater (in passenger seat) Passenger side seat heater switch S316 Lumbar Wiring Diagram for Mercury Mountaineer 2005 List of elements for Lumbar Wiring Diagram for Mercury Mountaineer 2005: 11 (left rear of vehicle) g400 C270a Central junction box (cjb) (behind left side of dash) Driver seat lumbar compressor motor Fuse 30a Hot at all times Left front lumbar adjust switch Out Pnk S305 S352 Passenger Power Seat Wiring Diagram for Mercury Mountaineer 2005 List of elements for Passenger Power Seat Wiring Diagram for Mercury Mountaineer 2005: 18 (at right "d" pillar) g401 Adjustable pedal switch Battery junction box (bjb) (left side of engine compt, at fender apron) Dn up Entire seat Forward/rearward Front of seat Fuse 30a Hot at all times Nca Rear of seat Red Right power seat motor assembly (in passenger seat) Right power seat switch Rwd fwd S313 Up/down front Up/down rear
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Mercury Mountaineer 2005 List of elements for Power Top/Sunroof Wiring Diagram for Mercury Mountaineer 2005: 23 Accessory delay relay Battery junction box (bjb) (left side of engine compt, at fender apron) C270a C270c C270f Central junction box (cjb) (behind left side of dash) Circuit breaker 62 30a Down/ open Fuse 20a G400 (left rear of vehicle) Hot at all times Overhead console) Ptc 6a Roof opening panel motor assembly Roof opening panel switch S262 S900 Tan/red Up/ close Vbatt Vpwr W/ medium overhead console W/o medium overhead console
POWER WINDOWS Power Windows Wiring Diagram for Mercury Mountaineer 2005 List of elements for Power Windows Wiring Diagram for Mercury Mountaineer 2005: 39 (in window regulator jumper assembly, Accessory delay relay Battery junction box (bjb) (left side of engine compartment, at fender apron) C220a C270a C270c C270e C3203e C3203f C504a C504b Central junction box (cjb) (behind left side of dash) Circuit breaker 62 30a Driver side front power window motor (in center of left front door) Fuse 17 15a Fuse 2 30a Fuse 6 60a G400 (left rear of vehicle) Hot at all times Instrument cluster Left rear Left rear power window motor (in center of left rear door) Left rear window adjust switch Liftgate glass actuator (on center of liftgate) Liftgate glass release relay Liftgate glass release switch (in center of tailgate) Master window adjust switch Microprocessor Near breakout to passenger 1 side impact sensor) s343 One-touch down Passenger Passenger side front power window motor (in center of right front door) Passenger side window adjust switch Right rear Right rear power window motor (in center of right rear door) Right rear window adjust switch S342 (in window regulator jumper assembly, near breakout to left rear speaker) S407 Vehicle security module (above right rear wheelwell)
RADIO Radio Wiring Diagram, with Audiophile System for Mercury Mountaineer 2005 List of elements for Radio Wiring Diagram, with Audiophile System for Mercury Mountaineer 2005: 61 (in dash panel to engine harness, near breakout to left horn) s168 Air bag contact Air bag sliding contact (at top of steering column) Air conditioning system Antenna Audio unit Audio/ climate control switch C175b C218a C270d C270f C270g C290a C290c Central junction box (cjb) (behind left side of dash) Circuit breaker ptc 1 6a Cruise control system Enable Fan down Fan up Fuse 20a Fuse 5a G200 (at right "a" pillar) G204 (at right "a" pillar) Gnd Hot at all times Hot in start Hot w/ acc delay relay energized Illum input Interior lights system L front spkr (+) L front spkr (-) L rear spkr (+) L rear spkr (-) Left front speaker Left rear speaker Media Nca Next Powertrain control module (pcm) (at right side engine bulkhead) R front spkr (+) R front spkr (-) R rear spkr (+) R rear spkr (-) Right front speaker Right rear speaker S229 S262 Shield Subwoofer Subwoofer amplifier (at right rear quarterpanel) Subwoofer high + Subwoofer high - Temp down Temp up Vbatt Vol down Vol up Vpwr Vss Windshield wiper motor (at left rear of engine compt) Radio Wiring Diagram, without Audiophile System for Mercury Mountaineer 2005 List of elements for Radio Wiring Diagram, without Audiophile System for Mercury Mountaineer 2005: 57 (at right "a" pillar) g200 Air bag contact Air bag sliding contact (at top of steering column) Air conditioning system Antenna Audio unit Audio/ climate control switch C175b C218a C240a C240b C270d C270f C270g Central junction box (cjb) (behind left side of dash) Circuit breaker ptc 1 6a Cruise control system Fan down Fan up Fuse 20a Fuse 5a Fused ignition G204 (at right "a" pillar) Ground Hot at all times Hot in start Hot with acc delay relay energized Illum return Interior lights system L front spkr (+) L front spkr (-) L rear spkr (+) L rear spkr (-) Left front speaker Left rear speaker Media Nca Next Power Powertrain control module (pcm) (at right side engine bulkhead) R front spkr (+) R front spkr (-) R rear spkr (+) R rear spkr (-) Right front speaker Right rear speaker S168 (in dash panel to engine harness, near breakout to left horn) S215 S229 S262 Temp down Temp up Vehicle speed Vol down Vol up Vss Windshield wiper motor (at left rear of engine compt) Rear Seat Entertainment Wiring Diagram, with Audiophile System for Mercury Mountaineer 2005 List of elements for Rear Seat Entertainment Wiring Diagram, with Audiophile System for Mercury Mountaineer 2005: 82 (in dash panel to engine harness, near breakout to left horn) s168 Air bag contact Air bag sliding contact (at top of steering column) Air conditioning system Antenna Asyson Audio system on Audio unit Audio/ climate control switch C175b C218a C270d C270f C270g C290a C290b C290c Central junction box (cjb) (behind left side of dash) Circuit breaker ptc 1 6a Cruise control system Dvd left + Dvd left - Dvd player Dvd right + Dvd right - Enable Fan down Fan up Fuse 20a Fuse 5a G200 (at right "a" pillar) G204 (at right "a" pillar) Gnd Ground Hot at all times Hot in start Hot w/ acc delay relay energized Illum Illum input Interior lights system L front spkr (+) L front spkr (-) L rear spkr (+) L rear spkr (-) Left front speaker Left rear speaker Media Nca Next Powertrain control module (pcm) (at right side engine bulkhead) Protocol a Protocol b R front spkr (+) R front spkr (-) R rear spkr (+) R rear spkr (-) Red Right front speaker Right rear speaker S262 S265 S266 S267 S268 (near breakout to c2237) Shield Spkr lf+ Spkr lf- Spkr rt+ Spkr rt- Subwoofer Subwoofer amplifier (at right rear quarterpanel) Subwoofer high + Subwoofer high - Tan Temp down Temp up Vbatt Vol down Vol up Vpwr Vss Windshield wiper motor (at left rear of engine compt) Rear Seat Entertainment Wiring Diagram, without Audiophile System for Mercury Mountaineer 2005 List of elements for Rear Seat Entertainment Wiring Diagram, without Audiophile System for Mercury Mountaineer 2005: 75 (at right "a" pillar) g200 (in dash panel to engine harness, near breakout to left horn) s168 Air bag contact Air bag sliding contact (at top of steering column) Air conditioning system Antenna Asyson Audio system on Audio unit Audio/ climate control switch C175b C218a C240a C240b C270d C270f C270g Central junction box (cjb) (behind left side of dash) Circuit breaker ptc 1 6a Cruise control system Dvd left + Dvd left - Dvd player Dvd right + Dvd right - Fan down Fan up Fuse 20a Fuse 5a Fused ignition G204 (at right "a" pillar) Ground Hot at all times Hot in start Hot with acc delay relay energized Illum Illum return Interior lights system L front spkr (+) L front spkr (-) L rear spkr (+) L rear spkr (-) Left front speaker Left rear speaker Medium Nca Next Power Powertrain control module (pcm) (at right side engine bulkhead) Protocol a Protocol b R front spkr (+) R front spkr (-) R rear spkr (+) R rear spkr (-) Red Right front speaker Right rear speaker S262 S265 S266 S267 Shield Spkr lf+ Spkr lf- Spkr rt+ Spkr rt- Tan Temp down Temp up Vehicle speed Vol down Vol up Vss Windshield wiper motor (at left rear of engine compt)
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Mercury Mountaineer 2005 List of elements for Shift Interlock Wiring Diagram for Mercury Mountaineer 2005: 36 (on steering column) All times Battery junction box (bjb) (left side of engine compt, at fender apron) Brake pedal position switch (above brake pedal) Brake shift interlock C175b C220a C220b C270e C270f Central junction box (cjb) (behind left side of dash) Computer data lines system Fuse 13 5a Fuse 15 15a Fuse 23 30a Fuse 25 15a Fuse 26 7.5a G200 (at right "a" pillar) Hot at Hot in start Ignition switch Instrument cluster Key removal inhibit solenoid Micro switch Microprocessor Nca O/d off ind Or run Powertrain control module (pcm) (at right side engine bulkhead) Red S120 (w/o ivd: in dash panel to engine harness, near breakout to windshield wiper motor) (w/ ivd: in dash panel to engine harness, near breakout to left horn) S171 (w/o ivd) S173 S223 S232 (w/ dual zone eatc) (in main harness, near breakout to central junction box) Transmission control switch
STARTING/CHARGING Charging Wiring Diagram for Mercury Mountaineer 2005 List of elements for Charging Wiring Diagram for Mercury Mountaineer 2005: 26 4.ol Battery Battery junction box (bjb) (left side of engine compt, at fender apron) Bus + Bus - C102c C120a C175b C220a C220b C270h Central junction box (cjb) (behind left side of dash) Charge indicator Computer data lines system Fuse 5a G106 (left front of engine compartment) G107 (4.6l: lower left side of engine) Generator Hot in start or run Instrument cluster Micro- processor Powertrain control module (pcm) (at right side engine bulkhead) Red S143 S144 Starter motor Starting Wiring Diagram for Mercury Mountaineer 2005 List of elements for Starting Wiring Diagram for Mercury Mountaineer 2005: 23 Acc Battery Battery junction box (bjb) (left side of engine compt, at fender apron) C175b C270b C270d Central junction box (cjb) (behind left side of dash) Digital transmission range (dtr) sensor (lower left side of automatic transmission) Fuse 10a Fuse 30a Fuse 50a G106 (left front of engine compt) G107 (4.6l: lower left side of engine) Ignition switch Lock Off Powertrain control module (pcm) (at right side engine bulkhead) Red Run S115 Start Starter motor Starter relay
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Mercury Mountaineer 2005 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Mercury Mountaineer 2005: 63 (in main harness, near breakout to audio unit) Air bag ind Air bag ind ctrl Air bag monitor Battery Battery junction box (bjb) (left side of engine compartment, at fender apron) C175b C220a C220b C228b C270e C310a C310b Central junction box (cjb) (behind left side of dash) Computer data lines system Data link connector (dlc) (behind left side of dash) Driver 1 side impact sensor (at base of left "b" pillar) Driver safety belt buckle pretensioner (under driver seat) Driver safety belt buckle switch (under driver seat) Dvr air bag stage 2 + Dvr air bag stage 2 - Electronic automatic temperature control (eatc) module (behind center of dash) Fuse 10a Fuse 15a G205 (under center console) G301 (under center console) Hot at all times Hot in run or start Instrument cluster Iso Logic ground Micro- processor Nca Note: 1: unbuckled 2: buckled Pass air bag stage 1 + Pass air bag stage 1 - Pass air bag stage 2 + Pass air bag stage 2 - Passenger 1 side impact sensor (at base of right "b" pillar) Passenger safety belt buckle pretensioner (under passenger seat) Passenger safety belt buckle switch (under passenger seat) Pin shorting bars engaged when module connector is disconnected from harness (shorting bars are connected between pins: 1-2, 3-4, 5-6 & 13-14 c310a 3-4 & 5-6 c310b Powertrain control module (pcm) (at right side engine bulkhead) Red Ref/gnd Restraints control module (below center console) S149 S228 S232 (in main harness, near breakout to central junction box) S333 (in window regulator jumper assembly, near breakout to restraints control module) See note Shorting bar Signal Signal + Signal - Stage 1 + Stage 1 - Tone Tone driver Vbatt Vpwr W/ dual zone eatc W/ right safety canopy Supplemental Restraints Wiring Diagram (2 of 2) for Mercury Mountaineer 2005 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Mercury Mountaineer 2005: 18 Air bag sliding contact (at top of steering column) C216a C216b C218b Driver 2 side impact sensor (w/ right safety canopy) (at left rear wheelwell) Driver air bag unit (under horn pad) Front impact severity sensor (at front of engine compartment) Left safety canopy (at left "c" pillar) Left seat track position sensor Nca Passenger 2 side impact sensor (w/ right safety canopy) (at right "c" pillar) Passenger air bag module (behind right side of dash) Red Resistor "a" (on left "c" pillar) Right safety canopy (w/ right safety canopy) (at right "c" pillar) Shorting bar W/ safety canopy W/o safety canopy
TRANSMISSION 4WD Wiring Diagram for Mercury Mountaineer 2005 List of elements for 4WD Wiring Diagram for Mercury Mountaineer 2005: 57 (in dash panel to engine harness, near breakout to right side of engine compt) (main harness, near breakout to c2126) s263 87a Battery junction (bjb) box (left side of engine compt, at fender apron) Brake pedal position switch (above brake pedal) Brk ped pos sw C175b C175t C270f Central junction box (cjb) (behind left side of dash) Cltch coil pwr Cltch coil rtn Computer data lines system Digital transmission range (dtr) sensor (lower left side of automatic transmission) Engine compartment relay box (right side of engine compt) Four-wheel drive switch Fuse 15a Fuse 20a Fuse 30a Fuse 5a G102 (left front of engine compartment) G103 (right front of engine compt) High Hot at all times Hot in run or start Illum Ind cntrl Interior lights system Low Magnetic clutch coil N tow sw Nca Neutral sw Neutral tow indicator Off Other Position 1 Position 2 Position 3 Position 4 Position ind Position sw rtn Powertrain control module (pcm) (at right side engine bulkhead) S114 S116 S119 S120 (w/ivd: in dash panel to engine harness, near breakout to left horn) (w/o ivd: in dash panel to engine harness, near breakout to windshield wiper motor) S149 Sig rtn To engine harness, near breakout to g100) Transfer case assembly controls (on left side of transfer case) Transfer case high to low relay Transfer case low to high relay Trns shft mot Vbatt Vref W/ 1 speed A/T Wiring Diagram for Mercury Mountaineer 2005 List of elements for A/T Wiring Diagram for Mercury Mountaineer 2005: 103 (4.0l) (4.6l) (behind left side of dash) data link connector (dlc) (in dash panel to engine harness, near breakout to a/c clutch cycling pressure switch) (in dash panel to engine harness, near breakout to c1168) (in engine control sensor & fuel charge harness, near breakout to powertrain control module) (in transmission control selector neutral switch harness, near breakout to powertrain control module) (main harness, near breakout central to junction box) (main harness, near breakout to left side of dash) (right rear of engine compt) (right side engine bulkhead) powertrain control module (pcm) (w/ ivd: in dash panel to engine harness, near breakout to left horn) (w/o ivd: in dash panel to engine harness, near breakout to windshield wiper motor) (window regulator jumper harness, near breakout for center of dash) Acc Battery junction (bjb) box (left engine compt, at fender apron) Battery junction (bjb) box (left side of engine compt, at fender apron) Brake in Brake pedal position switch (above brake pedal) C175b C175e C175t C220a C220b C270f Can + Can - Central junction box (cjb) (behind left side of dash) Cht Cylinder head temperature sensor (4.6l) (top front of cylinder head) Digital transmission range (dtr) sensor (lower left side of automatic transmission) Ect Engine controls system Engine coolant temperature sensor (4.0l) (top right of engine, near injector harness) Feps Fuse 15a Fuse 40a Fuse 5a G101 (left front engine compt) G104 G105 Ground Hot at all times Hot in run or start Ignition switch Instrument cluster Intermediate shaft speed (iss) sensor (top left side of automatic transmission) Iss Lock Microprocessor Nca O/d off Off Oss Output shaft speed (oss) sensor (left rear of automatic transmission) Pcm power diode Pcm power relay Pcs a Pcs b Pcs c Power Pressure control solenoids Red Return S101 S102 S120 S130 S132 S148 S149 S173 S207 (in main harness, near breakout to central junction box) S209 S212 S232 S301 S304 Shift solenoids Sig 1 Sig 2 Sig rtn Ss a Ss b Ss c Ss d Start Tcc sol Tcs Tft Throttle position (tps) sensor (top of throttle body) Torque conv clutch solenoid Tr1 Tr2 Tr3a Tr4 Trans- mission control switch Transmission fluid temperature sensor Transmission solenoid body assembly (on lower left of automatic transmission) Tss Turbine shaft speed (tss) sensor (on top left side of automatic transmission) Vbatt Vref
WARNING SYSTEMS Key Reminder & Seat Belt Warning Wiring Diagram for Mercury Mountaineer 2005 List of elements for Key Reminder & Seat Belt Warning Wiring Diagram for Mercury Mountaineer 2005: 67 (behind left side of dash) data link connector (dlc) Battery junction box (bjb) (left side of engine compt, at fender apron) Breakout for center of dash) C205a C220a C220b C270a C270d C270e C270h C310a C310b C3203d C3203e C3203f Central junction box (cjb) (behind left side of dash) Door ajar ind Driver safety belt buckle switch (under driver seat) Driver side rear door ajar switch (at rear of left rear door) Fuse 10a Fuse 15a Fuse 30a Fuse 5a G102 (left front of engine compt) G205 (under center console) G301 (under center console) G400 (left rear of vehicle) G401 (at right "d" pillar) Head Hot at all times Hot in start or run Ignition switch Ind Ind ctrl Instrument cluster Key in ignition switch Left front door ajar switch (at rear of left front door) Liftgate ajar switch (lower center of liftgate) Liftgate glass ajar switch (in center of tailgate) Main light switch Microprocessor Nca Off Park Pass- enger safety belt buckle switch (under passenger seat) Passenger side rear door ajar switch (at rear of right rear door) Restraints control module (below center console) Right front door ajar switch (at rear of right front door) S125 S232 (w/ dual zone eatc) S246 (in main harness, near breakout to c238) S259 S261 S307 (in window regulator jumper harness, near S333 S407 S502 S602 Sw sig Tan Tone drv Ubp Unbuckled seat belt Vbatt Vehicle security module (vsm) (above right rear wheelwell) Vpwr Washer fluid level switch (right front of engine compt) Tire Pressure Monitoring Wiring Diagram for Mercury Mountaineer 2005 List of elements for Tire Pressure Monitoring Wiring Diagram for Mercury Mountaineer 2005: 15 C270a Can bus + Can bus - Central junction box (cjb) (behind left side of dash) Computer data lines system Fuse 5a G401 (at right "d" pillar) Gnd Horn rly ctrl Horns system Hot at all times Hot in run or start Low tire pressure module (at right "c" pillar) Vbatt Vpwr
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Mercury Mountaineer 2005 List of elements for Front Wiper/Washer Wiring Diagram for Mercury Mountaineer 2005: 39 1. off 2. interval 1 3. interval 2 4. interval 3 5. interval 4 6. interval 5 7. low 8. high Battery junction box (bjb) (left side of engine compt, at fender apron) C175b C202a C220a C220b C270b C270e Central junction box (cjb) (behind left side of dash) Front washer pump relay Fuse 15 5a Fuse 21 30a Fuse 4 5a G101 (left front of engine compt) G102 (left front of engine compt) G300 (at left "a" pillar) G403 (left rear of vehicle) Hall sensor Hot at all times Hot in run or acc Instrument cluster Interval switch Low washer fluid ind Micro processor Microprocessor Multi- function switch Powertrain control module(pcm) (at right side of engine bulkhead) Rear washer pump relay Rear wiper motor assembly (at center of liftgate) S125 S168 (near breakout to left horn) S219 S415 Washer fluid level switch (right front of engine compt) Washer switch Windshield washer pump motor (in washer reservoir) Windshield wiper motor (at left rear of engine compt) Wiper high/low relay Wiper run/park relay Rear Washer/Wiper Wiring Diagram for Mercury Mountaineer 2005 List of elements for Rear Washer/Wiper Wiring Diagram for Mercury Mountaineer 2005: 27 (at center of liftgate) rear wiper motor assembly 1. off 2. variable 3. on 4. wash Battery junction box (bjb) (left side of engine compt, at fender apron) C202a C270a Central junction box (cjb) (behind left side of dash) Front washer pump relay Fuse 15 5a Fuse 30 20a G101 (left front of engine compt) G300 (at left "a" pillar) G400 (left rear of vehicle) G403 (left rear of vehicle) Hot at all times Hot in run or acc Intermittent wipe Microprocessor Multi- function switch Park Rear washer pump relay Rear wiper relay Run S219 S415 Windshield washer pump motor (in washer reservoir) Windshield wiper motor (at left rear of engine compartment)
