ENGINE PERFORMANCE – Mercury Grand Marquis GS 1998 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.6L

4.6L, Engine Performance Wiring Diagrams (1 of 4) for Mercury Grand Marquis GS 1998

List of elements for 4.6L, Engine Performance Wiring Diagrams (1 of 4) for Mercury Grand Marquis GS 1998:

• (behind right kick panel) g203
• (left side of engine, on left side of engine coil) radio noise capacitor
• (near breakout to 4-pin conn at right front fender)
• (near breakout to camshaft position sensor)
• (rear of left front fender apron)
• A/c cutout
• Air conditioning (a/c cutout sw)
• Case gnd
• Ckp (+)
• Ckp (-)
• Coil 1
• Coil 3
• Coil 5
• Coil 6
• Cooling fans (fan high rly)
• Cooling fans (fan low relay)
• Crankshaft position sensor (lower right front of engine)
• Crankshaft position sensor shield
• Cyl temp ind
• Data link (+)
• Data link (-)
• Data link connector (left side of dash)
• Ect ind
• Egr vac reg
• Egr vacuum regulator solenoid (top center rear of engine)
• Engine compartment fuse box (right front of engine compt)
• Eprom
• Fan high rly
• Fan low rly
• Fuel flow
• Fuel gauge
• Fuel pump
• Fuse 15a
• Fuse 25a
• Fuse 30a
• G104
• G104 (rear of left front fender apron)
• Hot at all times
• Hot in run or start
• I/p fuse panel (below dash, left of steering column)
• Iat sens
• Ignition coils
• Instrument cluster
• Intake air temperature sensor (left front of engine compt)
• Maf sig rtn
• Mil
• Nca
• Pcm power diode
• Pcm power relay
• Powertrain control module (behind left side of dash, on left side of firewall)
• Pwr gnd
• Red
• Relay center (left side of engine compt)
• Rt ho2s #2
• S100
• S101
• S103
• S119
• S134
• S135 (near breakout to generator)
• S151
• S223
• S276
• Shft sol 1
• Shft sol 2
• Tcil
• Tr1
• Tr2
• Tr4
• Trans ctrl sw
• Trans temp
• Transmission control switch (bottom of steering column)
• Vss (-)

4.6L, Engine Performance Wiring Diagrams (2 of 4) for Mercury Grand Marquis GS 1998

List of elements for 4.6L, Engine Performance Wiring Diagrams (2 of 4) for Mercury Grand Marquis GS 1998:

• (near breakout to engine compt fuse box)
• (speedometer/ odometer) vehicle speed input
• 4r7ow transmission
• Analog
• C250
• C251
• C255
• C256
• Cylinder head temp input
• Differential pressure feedback egr sensor (right side of intake manifold)
• Digital
• Digital transmission range sensor (dtr sensor) (left side of transmission)
• Electronic pressure control solenoid
• Engine coolant temp input
• Engine coolant temperature sensor (top right front of engine)
• Evaporative emission canister purge valve (rear center of engine compt)
• Fuel flow rate input
• G104 (rear of left front fender apron)
• G203 (behind right kick panel)
• Instrument cluster
• Malfunction indicator input
• Mass air flow sensor (behind air cleaner assembly)
• R n
• Red
• S105
• S119
• S126 (near breakout to right htd oxy sensor 1)
• S153
• S222
• Shift solenoids
• Ss1
• Ss2
• Throttle position sensor (left side of throttle body)
• Torque converter clutch solenoid
• Transmission control indicator input
• Transmission fluid temperature sensor

4.6L, Engine Performance Wiring Diagrams (3 of 4) for Mercury Grand Marquis GS 1998

List of elements for 4.6L, Engine Performance Wiring Diagrams (3 of 4) for Mercury Grand Marquis GS 1998:

• (center rear of trunk) g407
• (in trunk, on left support) inertia fuel shutoff switch
• (near breakout to 16-pin conn at left rear of engine compt)
• (near breakout to 4-pin conn at left rear of engine compt)
• (near breakout to 8-pin conn at left rear of engine compt)
• (near breakout to 8-pin conn at left rear of engine compt) s148
• (near breakout to fuel injector 8)
• (near breakout to fuel pump prime conn)
• (top of brake pedal support) brake pedal position switch
• Air conditioning (a/c cutout relay)
• Camshaft position sensor (left front of engine, below ignition coil)
• Cooling fans (fan low relay)
• Cylinder head temperature sensor (top left front of engine)
• Engine compartment fuse box (right front of engine compt)
• Fuel pump prime connector (left sdie of engine compt)
• Fuel pump relay
• Fuel pump/ fuel gauge sender
• Fuel tank assembly
• Fuel tank pressure sensor (on upper fuel tank assembly)
• Fuse 15a
• Fuse 20a
• Hot at all times
• I/p fuse panel (below dash, left of steering column)
• Left heated oxygen sensor no 1 (lower left rear of engine, in exhaust manifold)
• Left heated oxygen sensor no 2 (in exhaust, rear of catalyst)
• Nca
• Output shaft speed sensor (left side of transmission)
• Red
• Red/pnk
• Relay center (left side of engine compt)
• Right heated oxygen sensor no 1 (lower right rear of engine, in exhaust manifold)
• Right heated oxygen sensor no 2 (in exhaust, rear of catalyst)
• S115 (near breakout to 16-pin conn at left rear of engine compt)
• S123
• S124
• S125
• S129
• S130
• S147
• S265
• S402

4.6L, Engine Performance Wiring Diagrams (4 of 4) for Mercury Grand Marquis GS 1998

List of elements for 4.6L, Engine Performance Wiring Diagrams (4 of 4) for Mercury Grand Marquis GS 1998:

• (behind right side of dash) air suspension/ evo steering module
• (behind right side of dash) electronic variable orifice steering module
• (left rear of engine compt) speed control servo assembly
• (left rear of transmission) vehicle speed sensor
• (near breakout to diff press feedback egr sensor)
• (near breakout to fuel injector 8)
• (rear of vehicle, left side of trunk) canister vent solenoid
• (right side of dash) speed chime module
• A/c cutout sw
• A/c wot cutout
• Air conditioning (a/c cutout rly)
• Air conditioning (a/c cutout sw)
• Batt
• Brake on/off
• C204
• C214
• C216
• C234
• Cam pos in
• Canp
• Cht sensor
• Coil 2
• Coil 7
• Coil 8
• Dpfe sens
• Engine compartment fuse box (right front of engine compt)
• Epc sol
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Fuel injectors
• Fuel press
• Fuel pump ctrl
• Fuse 30a
• G104 (rear of left front fender apron)
• G203 (behind right kick panel)
• Heater ctrl
• Hot at all times
• Iac sol
• Idle air control valve (left side of intake manifold)
• L ho2s
• Lft ho2s #1
• Lft ho2s #2
• Maf sens in
• Oss (+)
• Power
• Power gnd
• Powertrain control module (behind left side of dash, on left side of firewall)
• Pwr gnd
• R ho2s
• Red
• Red/pnk
• Ref volt
• Rt ho2s #1
• S105
• S109 (near breakout to 16-pin conn at left rear of engine compt)
• S119
• S131
• S143
• S247 (near breakout to front control unit)
• Sig rtn
• Tan
• Tan/red
• Tcc sol
• Tp sens in
• Tr sens
• Vapor valve
• Vss (+)
• Vss (-)
• W/ air suspension & evo steering
• W/ evo steering only