AIR CONDITIONING – Ford Expedition 1999 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Ford Expedition 1999

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Ford Expedition 1999:

• (not used)
• 87a
• Amb temp sens input
• Ambient temperature sensor (left front of engine compartment)
• Audio/climate control switch assembly
• Aux rly ctrl
• Battery
• Battery junction box
• Blend door (wiper)
• Blend door 5v+
• Blend door actuator
• Blend door actuator (behind center of dash)
• Blend door gnd
• Blower ctrl out
• Blower motor (right side of engine compartment)
• Blower motor speed controller (behind right side of dash)
• Blower relay
• Blower/flasher relay block (behind center of dash)
• C205
• C242
• C243
• C280
• C281
• C282
• Central junction box
• Clockspring assembly (base of steering column)
• Data (+)
• Data (-)
• Eatc clutch rly out
• Electronic automatic temperature control (eatc) module (center of dash)
• Front panel illum
• Fuse 10a
• Fuse 5a
• Fuse 105 40a
• G200 (lower right kick panel)
• Ground
• Hot at all times
• Hot in run
• In-car temp sens
• In-car temperature sensor (behind dash)
• Inst panel lp feed
• Interior lights system
• Nca
• Power
• S200 (main body harness, near breakout to redundant steering control module)
• S203 (main body harness, near breakout to passenger airbag)
• S292 (main body harness, near breakout to electronic automatic temperature (eatc) module)
• S293 (main body harness, near breakout to electronic automatic temperature (eatc) module)
• Sensor ground
• Steering whl sw
• Sunload sens input
• Sunload sensor (top right side of dash)

Automatic A/C Wiring Diagram (2 of 3) for Ford Expedition 1999

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Ford Expedition 1999:

• (interior lamp feed harness, near breakout to in-line connector, left front of left rear wheelwell)
• (interior lamp feed harness, near breakout to left side rail lamp)
• (near fuel tank) g402
• (not used)
• (seat belt retractor harness, near breakout to rpo relay block 2) s424
• Auxiliary a/c blend actuator (behind left rear side panel)
• Auxiliary a/c control module (behind left rear side panel)
• Auxiliary a/c mode actuator (behind left rear side panel)
• Battery junction box (left side of engine compartment)
• C242
• C243
• Central junction box
• Connector (dlc) (behind center of dash)
• Console blower relay
• Control sensor harness, near breakout to power distribution box)
• Data link
• Engine control system
• Front blend potentiometer (in center of headliner)
• Front mode potentiometer (in center of headliner)
• Fuse 10a
• Fuse 15a
• Fuse 5a
• Hot in run
• Instrument cluster system
• Powertrain control module (pcm) (right side of engine compartment)
• Rear blend potentiometer (center of headliner)
• Red
• Relay block 2)
• Rpo relay block 1 (in dash, above passenger air bag)
• S2007 (main body harness, near breakout to central junction box)
• S2008 (main body harness, near breakout to instrument cluster)
• S228 (main body harness, in breakout to junction box fuse/ relay panel)
• S295 (main body harness, near breakout to electronic automatic temperature control (eatc) module)
• S422
• S918
• S919
• S920
• S921
• Seat belt retractor harness, near breakout to auxiliary a/c mode actuator)
• Solid state
• Wide open throttle relay

Automatic A/C Wiring Diagram (3 of 3) for Ford Expedition 1999

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Ford Expedition 1999:

• (interior lamp feed harness, near breakout to in-line connector in center of headliner) s926
• (lower right kick panel) g200
• (near fuel tank) g402
• 0.6 ohms
• 0ff
• 2.7 ohms
• 3.8 ohms
• 87a
• A/c clutch cycling pressure switch (right rear corner of engine compartment)
• A/c clutch diode (taped in harness, near a/c compressor clutch)
• A/c compressor clutch solenoid (left side of engine compartment)
• A/c pressure cutoff switch (right side of engine compartment)
• Auxiliary a/c blower motor resistor (behind left rear side panel)
• Auxiliary a/c relay
• Auxiliary blower motor (behind left rear side panel)
• Console blend door actuator (left center of floor console)
• Console blower motor (inside center of floor console)
• Console blower motor resistor (inside center of floor console)
• Front blower motor switch
• Fuse 30a
• G102 (rear of right fender apron)
• Hot at all times
• Low
• Low med
• Med
• Off
• Ohms
• Power distribution box
• Rear
• Rear blower motor switch
• Rear integrated control panel (ricp) (rear blower switch)
• Rear mode potentiometer (center of headliner)
• Red/ pnk
• Red/pnk
• Rpo relay block no.2 (behind left side rear panel)
• S102 (engine control sensor harness, near breakout to starter motor relay)
• S322 (console panel harness, near breakout to console blower motor)
• S423 (seat belt retractor harness, near breakout to auxiliary a/c mode blower motor resistor)
• S916 (interior lamp feed harness, near breakout to left side rail lamp)

Manual A/C Wiring Diagram (1 of 2) for Ford Expedition 1999

List of elements for Manual A/C Wiring Diagram (1 of 2) for Ford Expedition 1999:

• (heater blower motor feed harness, in breakout to blower motor resistor) s125
• (interior lamp feed harness, near breakout to in-line connector, left front of left rear wheelwell)
• (interior lamp feed harness, near breakout to left side rail lamp) s918
• (lower right kick panel) g200
• (main harness in breakout to fuse/relay panel)
• (main harness, near breakout to in-line connector) s279
• (main harness, near breakout to instrument cluster) s222
• (main harness, near breakout to rpo relay block)
• (near fuel tank) g403
• 87a
• Auxiliary a/c blend actuator (behind left rear side panel)
• Auxiliary a/c control module (behind left rear side panel)
• Auxiliary a/c mode actuator (behind left rear side panel)
• Battery junction box
• Blend door actuator (behind center of dash)
• Blend door pot
• Blower motor (right side of engine compartment)
• Blower motor switch
• Blower relay
• Blower/flasher relay block (behind center of dash)
• C217
• C218
• C219
• C220
• C242
• C243
• Central junction box
• Cold
• Def
• Def/flr
• Floor
• Flr & def
• Front blend potentiometer (in center of headliner)
• Front mode potentiometer (in center of headliner)
• Function selector switch
• Fuse 10a
• Fuse 15a
• Fuse 40a
• Fuse 5a
• Hot at all times
• Hot in run
• Illumination
• Interior lights system
• Max a/c
• Med hi
• Med lo
• Mode selector switch
• Norm a/c
• Off
• Pan & flr
• Pan/flr
• Panel
• Pnk
• Rear blend potentiometer (in center of headliner)
• Rear mode potentiometer
• Red
• S112 (engine sensor harness, left rear of engine compartment)
• S202 (main harness, in breakout to blower/ flasher relay block)
• S203
• S228
• S422 (seat belt retractor harness, near breakout to auxiliary a/c mode switch)
• S424 (seat belt retractor harness, near breakout to rpo relay box)
• S919
• S920 (interior lamp feed harness, near breakout to in-line connector, left front of left rear wheelwell)
• S921 (interior lamp feed harness, near breakout to in-line connector, left front of left rear wheelwell)
• Solid state
• Warm

Manual A/C Wiring Diagram (2 of 2) for Ford Expedition 1999

List of elements for Manual A/C Wiring Diagram (2 of 2) for Ford Expedition 1999:

• (lower right kick panel inner) g200
• (lower right kick panel) g200
• (near fuel tank) g402
• .6 ohms
• 0.6 ohms
• 0ff
• 2.7 ohms
• 3.8 ohms
• 87a
• A/c clutch cycling pressure switch (right rear corner of engine compartment)
• A/c clutch diode (taped in harness, near a/c compressor clutch)
• A/c compressor clutch solenoid (right side of engine compartment)
• A/c pressure cut off switch (right side of engine compartment)
• Accs
• Auxiliary a/c blower motor (rear floor panel)
• Auxiliary a/c blower motor resistor (behind left rear side panel)
• Auxiliary a/c relay
• Battery junction box
• Blower motor resistor (near blower motor)
• Console blend door actuator (left center of floor console)
• Console blower motor (inside center of floor console)
• Console blower motor resistor (inside center of floor console)
• Engine controls system
• Front blower motor switch
• Fuse 30a
• G102 (rear of right fender apron)
• Hot at all times
• Med
• Nca
• Off
• Ohms
• Powertrain control module (pcm) (right side of engine compartment)
• Rear
• Rear blower motor switch
• Rear integrated control panel (ricp) (rear blower switch)
• Red/pnk
• Rpo relay box 2 (in dash, above passenger airbag)
• S202 (main harness, near breakout to blower/flasher relay block)
• S204 (main harness near breakout to instrument cluster)
• S322 (console panel harness, near breakout to console blower motor)
• S423 (seat belt retractor harness, near breakout to auxiliary a/c mode blower resistor assembly)
• S916 (interior lamp feed harness, near breakout to left side rail lamp)
• Wide open throttle relay