ENGINE PERFORMANCE – Mercury Mountaineer 2001 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.0L

4.0L SOHC, Engine Performance Wiring Diagrams (1 of 4) for Mercury Mountaineer 2001

List of elements for 4.0L SOHC, Engine Performance Wiring Diagrams (1 of 4) for Mercury Mountaineer 2001:

• (2000)
• (center of firewall)
• (left radiator support) g108
• 4wd indicator
• A/c
• Air conditioning system (htr-a/c assy)
• Air susp input
• Battery junction box (left side of engine compt, at fender apron)
• C283
• Central timer module (ctm)/ generic electronic module (gem) (behind center of dash)
• Chassis gnd
• Chk fuel cap
• Ckp sensor (+)
• Ckp sensor (-)
• Crankshaft position sensor (lower front of engine compt)
• Crankshaft position sensor shield
• Data link
• Data link (+)
• Data link (-)
• Data link connector (behind left side of dash)
• Digital transmission range (dtr) sensor (left side of automatic transmission selector lever)
• Ect sens
• Electronic suspension system
• Evr ctrl
• Fuel flow rate
• Fuel guage send
• Fuel pump rel
• Fuse 15a
• Fuse 25a
• Fuse 30a
• Fuse junction panel (left side of vehicle, below dash)
• G121
• G121 (rear of engine compartment, center of firewall)
• Gem
• Ho2s 2 sig
• Hot at all times
• Hot in run
• Hot in run or start
• Ign coil
• Ignition coil (above valve cover)
• Instrument cluster system
• Knock sens
• Maf sens
• Maf sig rtn
• Mil
• Nca
• Oss
• Pcm power diode
• Pcm power relay
• Powertrain control module (pcm) (mounted through firewall)
• Pwr gnd
• R n
• Radio noise capacitor (left of ignition coil)
• Red
• S105
• S108
• S118 (near breakout to fuel injector 3)
• S205
• S206 (near breakout to ground g200)
• S207
• Shift sol a
• Shift sol b
• Shift sol d
• Spark plugs
• Tachometer
• Tcs input
• Tft sens
• To dtr sensor (diagram 4 of 4)
• Tr1
• Tr2a
• Tr4a
• Transmission control switch

4.0L SOHC, Engine Performance Wiring Diagrams (2 of 4) for Mercury Mountaineer 2001

List of elements for 4.0L SOHC, Engine Performance Wiring Diagrams (2 of 4) for Mercury Mountaineer 2001:

• (1999)
• (1999) fuel reset switch indicator
• (2000)
• (behind right kick panel) inertia fuel shut-off switch
• (near breakout to 12-pin conn at left side of engine compt)
• (near breakout to instr cluster)
• (near breakout to map sensor)
• (near breakout to throttle position sensor)
• 4wd "low range" indicator
• Battery junction box (left side of engine compt)
• C2008
• C2009
• Check fuel cap indicator
• Differential pressure feedback egr (dpfe) sensor (rear of engine compt)
• Engine coolant temperature sensor (left of throttle body)
• Fuel flow rate input
• Fuel pump
• Fuel pump relay
• Fuel tank assembly
• Fuse 20a
• G200 (left kick panel)
• Hot at all times
• Instrument cluster
• Knock sensor (near intake manifold)
• Mal- function indicator
• Message center
• Nca
• Output shaft speed (oss) sensor (left rear of transmission)
• Pressure transducer
• Red
• Red/pnk
• S127
• S136
• S146
• S161
• S248
• S351
• Tach input
• Tcil ground input
• Throttle position (tp) sensor (on throttle body)

4.0L SOHC, Engine Performance Wiring Diagrams (3 of 4) for Mercury Mountaineer 2001

List of elements for 4.0L SOHC, Engine Performance Wiring Diagrams (3 of 4) for Mercury Mountaineer 2001:

• (near breakout to fuel injector 6)
• (near breakout to fuel pump relay)
• 5r55e transmission
• Air conditioning system (a/c relay)
• Canister vent solenoid (above spare tire)
• Egr vacuum regulator solenoid (left side of engine)
• Electronic pressure control solenoid
• Evap canister purge valve (left front of engine compt)
• Fuel injectors
• Idle air control (iac) valve (left side of intake manifold)
• Red
• Red/pnk
• S123
• S124 (near top of cylinder head)
• S166
• S167
• S179 (rear of engine compt)
• Shift solenoids
• Ssa
• Ssb
• Ssc
• Ssd
• Tan
• Torque converter clutch solenoid
• Transmission fluid temperature sensor
• Turbine shaft speed sensor

4.0L SOHC, Engine Performance Wiring Diagrams (4 of 4) for Mercury Mountaineer 2001

List of elements for 4.0L SOHC, Engine Performance Wiring Diagrams (4 of 4) for Mercury Mountaineer 2001:

• (above brake pedal) brake pedal position switch
• (in breakout for pcm)
• (left side of automatic transmission selector lever)
• (near breakout to 16-pin conn at rear of engine compt)
• (near breakout to auxiliary relay box 3)
• (not used)
• (right rear of engine compt)
• 1999, early production
• 2000 & 2001
• 270 ohms
• 4-wheel anti-lock brake system (4wabs) module (left side of engine compt)
• A/c press
• Air conditioning system (a/c press sw)
• Air conditioning system (a/c relay)
• Battery junction box (left side of engine compt, at fender apron)
• Bpp switch
• Camshaft position (cmp) sensor (rear of engine)
• Can vent sol
• Cmp sens
• Digital transmission range (dtr) sensor
• Dpfe sens
• Epc sol
• Evap
• From dtr sensor (diagram 1 of 4)
• Ft press sens
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel pump rel
• Fuse 10a
• Fuse 15a
• Fuse 7.5a
• Fuse junction panel (left side of vehicle, below dash)
• G104 (rear of left front fender)
• G108 (left radiator support)
• Heated oxygen sensor (ho2s) 1 (on exhaust pipe)
• Heated oxygen sensor (ho2s) 2 (on exhaust pipe)
• Heated oxygen sensor (ho2s) 3 (on exhaust pipe)
• Heated oxygen sensor (ho2s) 4 (on exhaust pipe)
• Heater ctrl
• Ho2s 1
• Ho2s 1 sig
• Ho2s 2
• Ho2s 2 sig
• Ho2s 3
• Ho2s 4
• Ho2s 4 sig
• Hot at all times
• Iac sol
• Ign coil
• Kapwr (+)
• Knock sens
• Late production 2000 & 2001
• Maf sens in
• Mass airflow (maf) sensor (right side of engine compt)
• Nca
• Power
• Power gnd
• Powertrain control module (pcm) (mounted through firewall)
• Pwr gnd
• Rear axle sensor (on axle assembly)
• Red
• Red/pnk
• Ref volt
• S101
• S105
• S142
• S180
• S230
• Shift sol c
• Sig rtn
• Tan
• Tcc sol
• To 4wabs module)
• Tp sens in
• Tr3a
• Trans ctrl ind
• Tss
• Vpwr
• Vss (+)
• Wac

5.0L

5.0L, Engine Performance Wiring Diagrams (1 of 4) for Mercury Mountaineer 2001

List of elements for 5.0L, Engine Performance Wiring Diagrams (1 of 4) for Mercury Mountaineer 2001:

• (left radiator support) g108
• (near breakout to fuel injector 3)
• (rear of eng compt, center of firewall) g121
• A/c
• Air conditioning system
• Air conditioning system (htr-a/c assy)
• Air susp input
• Battery junction box (left side of eng compt, at left fender apron)
• Chassis gnd
• Ckp sensor (+)
• Ckp sensor (-)
• Crankshaft position (ckp) sensor (lower front of engine compt)
• Crankshaft position sensor shield
• Data link
• Data link (+)
• Data link (-)
• Data link connector (behind left side of dash)
• Ect sens
• Electronic suspension system
• Evr ctrl
• Fuel flow rate
• Fuel level in
• Fuel pump mon
• Fuse 15a
• Fuse 25a
• Fuse 30a
• Fuse junction panel (left side of vehicle, below dash)
• G108 (left radiator support)
• G121 (rear of engine compt, center of firewall)
• Ho2s 3 sig
• Hot at all times
• Hot in run
• Hot in run or start
• Ign coil 1
• Ign coil 2
• Ignition coil 1 & 2 (left front of engine)
• Ignition coil 3 & 4 (right front of engine)
• Instrument cluster system
• Maf sens
• Maf sig rtn
• Mil
• Nca
• Pcm power diode
• Pcm power relay
• Powertrain control module (pcm) (mounted through firewall)
• Pwr gnd
• Radio noise capacitor (left of ignition coil)
• Red
• S105
• S108
• S118
• S123 (near breakout to fuel pump relay)
• S205
• S206 (near breakout to ground g200)
• S207
• Shift sol a
• Shift sol b
• Spark plugs
• Tachometer
• Tr1
• Tr2a
• Tr4a
• Trans ctrl sw
• Trans temp
• Transmission control switch

5.0L, Engine Performance Wiring Diagrams (2 of 4) for Mercury Mountaineer 2001

List of elements for 5.0L, Engine Performance Wiring Diagrams (2 of 4) for Mercury Mountaineer 2001:

• (1999)
• (1999) fuel reset switch indicator input
• (behind right kick panel) inertia fuel shut-off switch
• (near breakout to 12-pin conn at left side of engine compt) s127
• (near breakout to 4-pin conn at rear of eng)
• (near breakout to fuel injector 6)
• (near breakout to gem module)
• (near breakout to throttle position sensor)
• Battery junction box (left side of eng compt, at left fender apron)
• C2008
• C2009
• C286
• C287
• Differential pressure feedback egr (dpfe) sensor (rear of engine compt)
• Digital transmission range (dtr) sensor (left side of automatic transmission selector lever)
• Engine coolant temperature sensor (left of throttle body)
• Fuel flow rate input
• Fuel pump
• Fuel pump relay
• Fuel tank assembly
• Fuse 20a
• G200 (left kick panel)
• Hot at all times
• Instrument cluster
• Malfunction indicator input
• Message center
• Nca
• Output shaft speed (oss) sensor (left rear of transmission)
• Pressure sensor
• R n
• Red
• Red/pnk
• S130
• S146
• S161
• S166
• S351
• Tach input
• Tcil ground input
• Throttle position (tp) sensor (on throttle body)
• To dtr sensor (diagram 4 of 4)

5.0L, Engine Performance Wiring Diagrams (3 of 4) for Mercury Mountaineer 2001

List of elements for 5.0L, Engine Performance Wiring Diagrams (3 of 4) for Mercury Mountaineer 2001:

• (near breakout to fuel injector 6)
• (near breakout to fuel injector 7)
• (near top of cylinder head)
• 4r70w transmission
• Canister vent solenoid (above spare tire)
• Egr vacuum regulator (evr) solenoid (right side of engine)
• Electronic pressure control solenoid
• Evap canister purge valve (left front corner of engine compt)
• Fuel injectors
• Idle air control (iac) valve (right side of intake manifold)
• Red
• Red/pnk
• S117
• S124
• S167
• Shift solenoids
• Ssa
• Ssb
• Tan
• Tan/ red
• Tan/red
• Torque converter clutch solenoid
• Transmission fluid temperature sensor

5.0L, Engine Performance Wiring Diagrams (4 of 4) for Mercury Mountaineer 2001

List of elements for 5.0L, Engine Performance Wiring Diagrams (4 of 4) for Mercury Mountaineer 2001:

• (above brake pedal) brake pedal position switch
• (in breakout for pcm)
• (near breakout to auxiliary relay box 3)
• (near breakout to conn at right rear of engine)
• (near breakout to egr valve position sensor)
• 270 ohms
• 4-wheel anti-lock brake system (4wabs) module (left side of engine compt)
• A/c press
• Air conditioning system (a/c press sw)
• Air conditioning system (a/c relay)
• Battery junction box (left side of eng compt, at left fender apron)
• Bpp switch
• Camshaft position (cmp) sensor (front of engine)
• Camshaft position sensor shield
• Can vent sol
• Cmp sens
• Digital transmission range (dtr) sensor (left side of automatic transmission selector lever)
• Dpfe sens
• Epc sol
• From dtr sensor (diagram 2 of 4)
• Ft press sens
• 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 pump ctrl
• Fuse 10a (mini)
• Fuse 15a (mini)
• Fuse 7.5a
• Fuse junction panel (left side of vehicle, below dash)
• G104 (rear of left front fender)
• G108 (left radiator support)
• G121 (rear of eng compt, center of firewall)
• Heated oxygen sensor (ho2s) 1 (on exhaust pipe)
• Heated oxygen sensor (ho2s) 2 (on exhaust pipe)
• Heated oxygen sensor (ho2s) 3 (on exhaust pipe)
• Heated oxygen sensor (ho2s) 4 (on exhaust pipe)
• Heater ctrl
• Ho2s 1
• Ho2s 1 sig
• Ho2s 2
• Ho2s 2 sig
• Ho2s 3
• Ho2s 4
• Ho2s 4 sig
• Hot at all times
• Iac sol
• Ign coil 3
• Ign coil 4
• Kapwr (+)
• Maf sens in
• Mass airflow (maf) sensor (right side of engine compt)
• Nca
• Oss
• Power
• Power gnd
• Powertrain control module (pcm) (mounted through firewall)
• Pwr gnd
• Rear axle sensor (on axle assembly)
• Red
• Red/pnk
• Ref volt
• S101
• S105
• S108
• S119
• S142
• Sig rtn
• Tan
• Tan/red
• Tcc sol
• To 4wabs module)
• Tp sens in
• Tr3a
• Trans ctrl ind
• Vapor valve
• Vpwr
• Vss (+)
• Wat