AIR CONDITIONING – Ford Econoline E250 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

4.2L

4.2L, Manual A/C Wiring Diagram, without Stripped Chassis (1 of 2) for Ford Econoline E250 2003

List of elements for 4.2L, Manual A/C Wiring Diagram, without Stripped Chassis (1 of 2) for Ford Econoline E250 2003:

• (1: temperature control potentiometer)
• (at right front of engine compt)
• (at right front of engine compt) g101
• (in engine control sensor harness, in breakout to battery junction box) s110
• (in engine control sensor harness, in breakout to battery junction box) s176
• (in fuel charge wiring harness, near breakout to intake manifold runner control module) s107
• (in window regulator relay switch harness, near breakout to ignition switch) s223
• (left side of dash) g204
• A/c clutch cycling pressure switch (in right front of engine compartment)
• A/c clutch relay
• A/c clutch solenoid (on left front of engine)
• A/c compressor clutch diode (near front of engine)
• A/c high pressure switch (in right front of engine compartment)
• A/c on input signal
• A/c relay control
• Battery junction box (bjb) (in left front of engine compartment)
• C294a
• C294d
• Central junction box (cjb) (left side of dash, near kick panel)
• Defrost
• Floor
• Front function selector switch assembly
• Fuse 10a
• Fuse 15a
• Fuse 30a
• G101
• Hot at all times
• Hot in run
• Hot in start or run
• Max a/c
• Mix
• Mode switch
• Norm a/c
• Of engine compt)
• Off
• Pcm power relay
• Pnk/ (in main wiring harness, near breakout to front function selector switch assembly) s203
• Powertrain control module (pcm) (in left rear of engine compartment, near brake master cylinder)
• Red
• S142 (in engine control sensor harness, at center rear red
• Temperature blend door actuator (behind right side of dash, on a/c heater plenum)
• To blower motor relay (diagram 2 of 2)
• To s400 (diagram 2 of 2)
• Vent
• Vent norm a/c

4.2L, Manual A/C Wiring Diagram, without Stripped Chassis (2 of 2) for Ford Econoline E250 2003

List of elements for 4.2L, Manual A/C Wiring Diagram, without Stripped Chassis (2 of 2) for Ford Econoline E250 2003:

• (at left side of dash) g203
• (at left side of engine compt) g100
• (at left side of vehicle rear end)
• (at left side of vehicle rear end) g400
• (at right front of engine compt) g101
• (in a/c blower motor wiring harness, near breakout to rear a/c blower speed relay 1) s400
• (in engine control sensor harness, near breakout to c219) s122
• (in interior lamps wiring harness, near breakout to interior lamp) s913
• (in right rear of engine compartment) blower motor resistor
• (in taillamp wiring harness, near breakout to c925) s303
• (not used)
• 87a
• Auxiliary blower motor (above left rear wheelwell)
• Auxiliary blower motor resistor assembly (above left rear wheelwell)
• Auxiliary blower motor switch
• Battery junction box (bjb) (in left front of engine compartment)
• Blower motor relay
• Blower motor switch
• C294b
• C294c
• C951a
• C951b
• Cutaway
• From s111 (diagram 1 of 2)
• Front blower motor (on right side of engine compartment)
• Front function selector switch assembly
• Fuse 50a
• G400
• High
• Hot at all times
• Illum
• Interior lights system
• Low
• Off
• Rear a/c blower speed relay 1 (in left rear corner of vehicle, above wheelwell)
• Rear a/c blower speed relay 2 (in left rear corner of vehicle, above wheelwell)
• Rear function selector switch assembly
• S143 (in engine control sensor harness, at right side of engine compt)
• S144 (in engine control sensor harness, at right side of engine compt)
• S202 (near breakout to front function selector switch assembly)
• S304 (in taillamp wiring harness, near breakout to c925)
• S305 (in taillamp wiring harness, near breakout to c925)
• S401 (in a/c blower motor wiring harness, in breakout to c405)
• Van & wagon
• W/ auxiliary a/c
• W/ rear control
• W/o rear control

4.6L

4.6L, Manual A/C Wiring Diagram (1 of 2) for Ford Econoline E250 2003

List of elements for 4.6L, Manual A/C Wiring Diagram (1 of 2) for Ford Econoline E250 2003:

• (1: temperature control potentiometer)
• (at right front of engine compt)
• (in engine control sensor harness, in breakout to battery junction box) s110
• (in engine control sensor harness, in breakout to battery junction box) s176
• (in window regulator relay switch harness, near breakout to ignition switch) s223
• (left side of dash) g204
• 87a
• A/c clutch cycling pressure switch (in right front of engine compartment)
• A/c clutch relay
• A/c clutch solenoid (on lower right front of engine)
• A/c compressor clutch diode (near front of engine)
• A/c high pressure switch (in right front of engine compartment)
• A/c on input sig
• A/c relay ctrl
• Battery junction box (bjb) (in left front of engine compartment)
• C294a
• C294d
• Central junction box (cjb) (left side of dash, near kick panel)
• Defrost
• Engine compartment)
• Floor
• Front function selector switch assembly
• Fuse 15a
• Fuse 30a
• G101
• G101 (at right front of engine compt)
• Hot at all times
• Hot in run
• Hot in start or run
• Max a/c
• Mix
• Mode switch
• Norm a/c
• Off
• Pcm power relay
• Pnk/ (in main wiring harness, near breakout to front function selector switch assembly) s203
• Powertrain control module (pcm) (in left rear of engine compartment, near brake master cylinder)
• Red
• S142 (in engine control sensor harness, at center rear of engine compartment)
• S166 (in engine control sensor harness, near breakout to c139)
• Temperature blend door actuator (behind right side of dash, on a/c heater plenum)
• To blower motor relay (diagram 2 of 2)
• To s400 (diagram 2 of 2)
• Vent
• Vent norm a/c

4.6L, Manual A/C Wiring Diagram (2 of 2) for Ford Econoline E250 2003

List of elements for 4.6L, Manual A/C Wiring Diagram (2 of 2) for Ford Econoline E250 2003:

• (at left side of dash) g203
• (at left side of engine compt) g100
• (at left side of vehicle rear end)
• (at left side of vehicle rear end) g400
• (at right front of engine compt) g101
• (in a/c blower motor wiring harness, near breakout to rear a/c blower speed relay 1) s400
• (in engine control sensor harness, near breakout to c219) s122
• (in interior lamps wiring harness, near breakout to interior lamp) s913
• (in right rear of engine compartment) blower motor resistor
• (in taillamp wiring harness, near breakout to c925) s303
• (not used)
• 87a
• Auxiliary blower motor (above left rear wheelwell)
• Auxiliary blower motor resistor assembly (above left rear wheelwell)
• Auxiliary blower motor switch
• Battery junction box (bjb) (in left front of engine compartment)
• Blower motor relay
• Blower motor switch
• C294b
• C294c
• C951a
• C951b
• Cutaway
• From s111 (diagram 1 of 2)
• Front blower motor (on right side of engine compartment)
• Front function selector switch assembly
• Fuse 50a
• G400
• High
• Hot at all times
• Illum
• Interior lights system
• Low
• Off
• Rear a/c blower speed relay 1 (in left rear corner of vehicle, above wheelwell)
• Rear a/c blower speed relay 2 (in left rear corner of vehicle, above wheelwell)
• Rear function selector switch assembly
• S143 (in engine control sensor harness, at right side of engine compt)
• S144 (in engine control sensor harness, at right side of engine compt)
• S202 (in main wiring harness, near breakout to front function selector switch assembly)
• S304 (in taillamp wiring harness, near breakout to c925)
• S305 (in taillamp wiring harness, near breakout to c925)
• S401 (in a/c blower motor wiring harness, in breakout to c405)
• Van & wagon
• W/ auxiliary a/c
• W/ rear control
• W/o rear control

5.4L

5.4L, Manual A/C Wiring Diagram, without Stripped Chassis (1 of 2) for Ford Econoline E250 2003

List of elements for 5.4L, Manual A/C Wiring Diagram, without Stripped Chassis (1 of 2) for Ford Econoline E250 2003:

• (at right front of engine compt) g101
• (in engine control sensor & fuel charge wiring harness, near breakout to a/c clutch solenoid) s189
• (in window regulator relay switch harness, near breakout to ignition switch) s223
• (left side of dash) g204
• (temperature control potentiometer)
• 5.4l, 5.4l cng & 6.8l
• 7.3l di turbo diesel
• A/c clutch cycling pressure switch (in right front of engine compartment)
• A/c clutch solenoid (on lower right front of engine)
• A/c clutch solenoid (on top left front of engine)
• A/c compressor clutch diode (near front of engine)
• A/c high pressure switch (in right front of engine compartment)
• A/c on input signal
• C294a
• C294d
• Central junction box box (cjb) (left side of dash, near kick panel)
• Defrost
• Floor
• Front function selector switch assembly
• Front function selector switch assembly front12
• Fuse 15a
• Hot in run
• Max a/c
• Mix
• Mode switch
• Norm a/c
• Off
• Pnk/ (in main wiring harness, near breakout to front function selector switch assembly) s203
• Powertrain control module (pcm) (in left rear of engine compartment, near brake master cylinder)
• S111 (in engine control sensor harness, in breakout to battery junction box)
• S141 (in engine control sensor harness, near breakout to c139) (7.3l: in engine control sensor harness, near breakout to c1168)
• S143 (in engine control sensor harness, at right side of engine compartment)
• Temperature blend door actuator (behind right side of dash, on a/c heater plenum)
• To blower motor relay (diagram 2 of 2)
• To s400 (diagram 2 of 2)
• Vent
• Vent norm a/c

5.4L, Manual A/C Wiring Diagram, without Stripped Chassis (2 of 2) for Ford Econoline E250 2003

List of elements for 5.4L, Manual A/C Wiring Diagram, without Stripped Chassis (2 of 2) for Ford Econoline E250 2003:

• (at left side of dash) g203
• (at left side of vehicle rear end)
• (at left side of vehicle rear end) g400
• (at right front of engine compt) g101
• (in a/c blower motor wiring harness, near breakout to rear a/c blower speed relay 1) s400
• (in engine control sensor harness, near breakout to c219) s122
• (in interior lamps wiring harness, near breakout to interior lamp) s913
• (in right rear of engine compartment) blower motor resistor
• (in taillamp wiring harness, near breakout to c925) s303
• (not used)
• 87a
• Auxiliary blower motor (above left rear wheelwell)
• Auxiliary blower motor resistor assembly (above left rear wheelwell)
• Auxiliary blower motor switch
• Battery junction box (bjb) (in left front of engine compartment)
• Blower motor relay
• Blower motor switch
• C294b
• C294c
• C951a
• C951b
• Cutaway
• From s111 (diagram 1 of 2)
• Front blower motor (on right side of engine compartment)
• Front function selector switch assembly
• Fuse 50a
• G100 (at left side of engine compt)
• G400
• High
• Hot at all times
• Illum
• Interior lights system
• Low
• Off
• Rear a/c blower speed relay 1 (in left rear corner of vehicle, above wheelwell)
• Rear a/c blower speed relay 2 (in left rear corner of vehicle, above wheelwell)
• Rear function selector switch assembly
• S143 (in engine control sensor harness, at right side of engine compt)
• S144 (in engine control sensor harness, at right side of engine compt)
• S202 (near breakout to front function selector switch assembly)
• S304 (in taillamp wiring harness, near breakout to c925)
• S305 (in taillamp wiring harness, near breakout to c925)
• S401 (in a/c blower motor wiring harness, in breakout to c405)
• Van & wagon
• W/ auxiliary a/c
• W/ rear control
• W/o rear control