AIR CONDITIONING – Mercury Grand Marquis GS 2004 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram for Mercury Grand Marquis GS 2004

List of elements for Automatic A/C Wiring Diagram for Mercury Grand Marquis GS 2004:

• (at center rear of engine) g106
• (at front of right front fender apron) g102
• (at front of right front fender apron) g102
• (behind right kick panel) g201
• (in main wiring harness, on left rear side of engine compt) s286
• (left rear of engine compt)
• (left rear of engine compt) s156
• (near breakout to c1019) s109
• (near breakout to c1033) s123
• (near breakout to c1046) s113
• (near breakout to coil on plug 2) s157
• (near breakout to coil on plug 4)
• (near breakout to speed control actuator) s128
• (not used)
• A/c clutch field coil (at right front of engine)
• A/c clutch relay
• A/c evaporator discharge temperature sensor (on right side rear of engine compt)
• A/c pressure transducer sensor (on right side center of engine)
• Air bag sliding contact (at base of steering column)
• Amb temp sens input
• Ambient air temperature sensor (on front of upper radiator support)
• Audio/climate control system
• Autolamp/sunload sensor (on upper left side of dash)
• Battery
• Battery junction box (bjb) (in right front of engine compartment, behind battery)
• Blend door (heat)
• Blower motor high message center switch out blend door (cool)
• Blower motor relay
• Blower mtr output
• Blower speed ctrl
• C2145a
• C220b
• C228a
• C228b
• Central junction box (cjb) (below dash, left of steering column)
• Computer data lines system
• Control module)
• Eatc module
• Electronic automatic temperature control (eatc) module (behind center of dash)
• Engine controls system
• Engine coolant temperature (ect) sensor (except marauder: on top right front of engine, near fuel injector 1) (marauder: at front top left of engine)
• Engine cooling fan motor (front of engine compt)
• Fan down
• Fan up
• Front blower motor (at right rear of engine compt)
• Front blower motor speed controller (at rear of engine compt)
• Front fender apron) g102
• Front panel illum
• Fuse 15a
• Fuse 40a
• Fuse 50a
• G201 (behind right kick panel)
• Ground
• Hot at all times
• Hot in run
• Hot in run or acc
• Hot in run or start
• Ignition
• In car temp sens
• In-vehicle temperature sensor (behind top center of dash)
• Instrument cluster (electronic cluster)
• Instrument illum
• Interior lights system
• Lighting control module (behind center of dash)
• Low charge protection sw
• Low charge protection switch (at right side of of engine compt)
• Nca
• Pcm power relay
• Powertrain control module (pcm) (in engine compt on left side of firewall)
• Red
• Remote ctrl unit
• Rest
• S113 (in dash panel to headlamp junction harness, near breakout to c1046)
• S122 (in dash panel to headlamp junction harness, left rear of engine compartment)
• S126
• S130 (left rear of engine compt)
• S133 (left rear of engine compt)
• S136
• S141 (in dash panel to headlamp junction harness, near breakout to c1026)
• S142 (in dash panel to headlamp junction harness, in breakout to engine cooling fan motor)
• S227 (in main wiring harness, near breakout to lighting control module)
• S276 (in main wiring harness, near breakout to autolamp sensor)
• S285 (in main wiring harness, near breakout to adjustable pedal switch)
• Scp bus (+)
• Scp bus (-)
• Sensor rtn
• Sunload sens input
• Temp door variable resistor
• Temp down
• Temp up
• Temperature blend door actuator (behind right side of dash, on top of a/c plenum)
• To autolamp sensor)
• Variable resistor

Manual A/C Wiring Diagram for Mercury Grand Marquis GS 2004

List of elements for Manual A/C Wiring Diagram for Mercury Grand Marquis GS 2004:

• (at front of right
• (at front of right front fender apron) g102
• (behind right kick panel) g201
• (front of engine compartment)
• (in engine compt on left side of firewall)
• (near breakout to coil on plug 4)
• (not used)
• A/c clutch field coil (at right front of engine)
• A/c clutch relay
• A/c evaporator discharge air temperature sensor (on right side rear of engine compt)
• A/c pressure transducer sensor (on right side center of engine)
• A/c switch
• Battery junction box (bjb) (in right front of engine compartment, behind battery)
• Battery junction box (bjb) (in right front of engine compt, behind battery)
• Blower motor relay
• Blower motor switch
• C294a
• C294b
• C294c
• C294d
• Central junction box (cjb) (below dash, left of steering column)
• Cold
• Compt)
• Control module) s266
• Def
• Def/floor
• Engine controls system
• Engine coolant temperature (ect) sensor (except marauder: on top right front of engine, near fuel injector 1) (marauder: at front top left of engine)
• Engine cooling fan motor
• Floor
• Front blower motor (at right rear of engine
• Front blower motor resistor assembly
• Front fender apron)
• Function selector switch assembly
• Fuse 15a
• Fuse 25a
• Fuse 30a
• Fuse 40a
• Fuse 50a
• G101 (at rear of left front fender apron)
• G102
• G102 (at front of right
• G106 (at center rear of engine)
• High
• Hot at all times
• Hot in run
• Hot in start or run
• Illumination
• Interior lights system
• Low
• Low charge protection switch (at right side of engine compt)
• Max
• Med high
• Med low
• Mode switch
• Off
• Panel
• Panel/ floor
• Pcm power diode
• Pcm power relay
• Powertrain control module (pcm)
• S109 (in dash panel to headlamp junction harness, near breakout to c1019)
• S113 (in dash panel to headlamp junction harness, near breakout
• S113 (in dash panel to headlamp junction harness, near breakout to c1046)
• S117 (near breakout to c1010)
• S123 (near breakout to c1033)
• S126
• S128 (near breakout to speed control actuator)
• S142 (in breakout to engine cooling fan motor)
• S144 (in dash panel to headlamp junction harness, in breakout to front blower motor)
• S157 (near breakout to coil on plug 2)
• S204 (in main wiring harness, near breakout to clock)
• S204 (near breakout to clock)
• S276 (in main wiring harness, near breakout to autolamp sensor)
• S276 (near breakout to autolamp sensor)
• Solid state
• Temperature blend door actuator (behind right side of dash, on top of a/c plenum)
• Temperature control potentiometer
• To c1046)
• Warm