ENGINE PERFORMANCE – Mercury Grand Marquis LS 2009 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.6L FLEX FUEL

4.6L Flex Fuel, Engine Performance Wiring Diagram (1 of 6) for Mercury Grand Marquis LS 2009

List of elements for 4.6L Flex Fuel, Engine Performance Wiring Diagram (1 of 6) for Mercury Grand Marquis LS 2009:

• Accelerator pedal position sensor (under left side of dash)
• Accr
• Accs
• Acpt
• Air conditioning system
• Anti-theft system
• Antilock brakes system
• App1
• App2
• App3
• Battery junction box (bjb) (right front of engine compt, behind battery)
• Bps
• C175b
• Central junction box (cjb) (below dash, left of steering column)
• Computer data lines system
• Cruise control system
• Etcref1
• Etcref2
• Etcrtn
• Evap can vent
• Feps
• Fpc
• Fpm
• Ftpt
• Fuse 10a
• Fuse 15a
• Fuse 30a
• G106 (left rear of engine compt)
• G107 (left rear of engine compt)
• G109 (front of right fender)
• Gen com
• Gnd
• Hot at all times
• Hot in run or start
• Hs can+
• Hs can-
• Ignition coils relay
• Kapwr
• Pcm power diode
• Pcm power relay
• Power distribution system
• Powertrain control module (pcm) (left rear of engine compt)
• Psps
• Rdi
• Red
• Red/pnk
• Rx in
• S118
• S121
• S130 (in dash panel to headlight junction harness, near breakout to powertrain control module (pcm))
• S276
• Sccs
• Sig rtn
• Sigrtn1
• Starter relay
• Starting/charging system
• Tcs_sw
• Trans ctrl sw
• Transmission control switch (in steering column)
• Transmissions system
• Tx out
• Vpwr
• Vref
• Vsout

4.6L Flex Fuel, Engine Performance Wiring Diagram (2 of 6) for Mercury Grand Marquis LS 2009

List of elements for 4.6L Flex Fuel, Engine Performance Wiring Diagram (2 of 6) for Mercury Grand Marquis LS 2009:

• (in dash panel to headlamp junction harness, near breakout to battery junction box (bjb))
• A/c clutch relay
• Audio control module (acm)
• Battery junction box (bjb) (right front of engine compt, behind battery)
• C290a
• Evap canister purge valve (top right rear of engine)
• Evap canister vent valve solenoid (under left rear of vehicle)
• Fuel pump relay
• Fuse 10a
• Fuse 15a
• Fuse 20a
• G107 (left rear of engine compt)
• G109 (front of right fender)
• Hot at all times
• Inertia fuel shut-off (ifs) switch (in luggage compt, on left support)
• Mass air flow/intake air temperature (maf/iat) sensor (behind air cleaner assembly)
• Police accessory connector (pigtail) (if equipped)
• Red
• Red/pnk
• S118
• S119
• S121
• S165
• S241 (in main wiring harness, near breakout to audio unit)

4.6L Flex Fuel, Engine Performance Wiring Diagram (3 of 6) for Mercury Grand Marquis LS 2009

List of elements for 4.6L Flex Fuel, Engine Performance Wiring Diagram (3 of 6) for Mercury Grand Marquis LS 2009:

• (behind bottom center of rear seat) g405
• (in engine control sensor & fuel charge wiring harness, near breakout to cop 4)
• (in engine control sensor & fuel charge wiring harness, near breakout to powertrain control module (pcm))
• (in engine control sensor & fuel charge wiring harness, near breakout to turbine shaft speed sensor) s146
• (lower right front of engine) power steering pressure switch
• (on left front side of luggage compt) fuel pump driver module
• (on right side center of engine) a/c pressure transducer sensor
• (right side of engine) egr system module (esm)
• (top left front of engine) cylinder-head temperature sensor
• (top right front of engine) fuel rail pressure/ temperature sensor
• Digital transmission range (dtr) sensor (left side of transmission)
• Dpfe
• Evp
• Fp feed
• Frp
• Frt
• Fuel tank unit (in fuel tank)
• G406 (behind bottom center of rear seat)
• Heated oxygen sensor (ho2s) 11 (lower right rear of engine, in exhaust manifold)
• Heated oxygen sensor (ho2s) 12 (in exhaust, rear of catalyst)
• Heated oxygen sensor (ho2s) 21 (lower left rear of engine, in exhaust manifold)
• Heated oxygen sensor (ho2s) 22 (in exhaust, rear of catalyst)
• Map
• Nca
• Red
• Red/pnk
• S123
• S126
• Sig
• Tr1
• Tr2
• Tr3a
• Tr4
• Vpwr
• Vref

4.6L Flex Fuel, Engine Performance Wiring Diagram (4 of 6) for Mercury Grand Marquis LS 2009

List of elements for 4.6L Flex Fuel, Engine Performance Wiring Diagram (4 of 6) for Mercury Grand Marquis LS 2009:

• (front of left cylinder bank) camshaft position sensor
• (in engine control sensor & fuel charge wiring harness, near breakout to pcm)
• (right side of transmission) automatic transmission
• (top right front of engine) heated pcv
• Anti-theft ind
• Anti-theft system
• C175t
• Epc
• Epcs ctrl
• Fuel level
• Fuel level rtn
• Ho2s 12
• Ho2s 22
• Htr 12
• Htr 22
• Instrument cluster (ic)
• Nca
• Oss sensor
• Output shaft speed (oss) sensor (left side of transmission)
• Powertrain control module (pcm) (left rear of engine compt)
• Red
• S147
• Shift sol a
• Shift sol b
• Sig rtn 1
• Ssa
• Ssb
• Tcc
• Tcc sol
• Tft sens sig
• Tr1
• Tr2
• Tr3a
• Tr4
• Tss sen sig
• Turbine shaft speed (tss) sensor (left side of transmission)

4.6L Flex Fuel, Engine Performance Wiring Diagram (5 of 6) for Mercury Grand Marquis LS 2009

List of elements for 4.6L Flex Fuel, Engine Performance Wiring Diagram (5 of 6) for Mercury Grand Marquis LS 2009:

• Coil on plugs (coil 1: top right front of engine) (coil 2: top right center of engine) (coil 3 & 4: top right rear of engine) (coil 5 & 6: top left front of engine) (coil 7: top left center of engine) (coil 8: top left rear of engine)
• Fuel injectors (inj 1: top right front of engine) (inj 2 & 3: top right center of engine) (inj 4: top right rear of engine) (inj 5 & 6: top left front of engine) (inj 7: top left center of engine) (inj 8: top left rear of engine)
• Ignition transformer capacitor (front of left cylinder bank)
• Knock sensor (top right front of engine)
• Red
• Red/pnk
• S136 (in engine control sensor & fuel charge wiring harness, near breakout to heated oxygen sensor (ho2s) 11)
• Tan
• Tan/red

4.6L Flex Fuel, Engine Performance Wiring Diagram (6 of 6) for Mercury Grand Marquis LS 2009

List of elements for 4.6L Flex Fuel, Engine Performance Wiring Diagram (6 of 6) for Mercury Grand Marquis LS 2009:

• (in engine control sensor & fuel charge wiring harness, near breakout to c192) s158
• (left rear of engine compt) powertrain control module (pcm)
• (left rear of engine) electronic throttle control (etc) module
• (lower right front of engine) crankshaft position sensor
• Bvref
• C1368
• C1449
• C175e
• Cht
• Ckp+
• Ckp-
• Cmp
• Cooling fans system
• Dpfe
• Etcrtn
• Evr
• Fan low rly
• Frp
• Frt
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• G107 (left rear of engine compt)
• Gen mon
• Ho2s 11
• Ho2s 21
• Htr 11
• Htr 21
• Iat
• Ign coil 1
• Ign coil 2
• Ign coil 3
• Ign coil 4
• Ign coil 5
• Ign coil 6
• Ign coil 7
• Ign coil 8
• Ks+
• Ks-
• Maf
• Mafrtn
• Map
• Nca
• Pcvhc
• Red/pnk
• S118
• Sigrtn 1
• Starting/charging system
• Tacm+
• Tacm-
• Tan
• Tan/red
• Tp1-ns
• Tp2-ps
• Vapor valve
• Vref