AIR CONDITIONING – Saturn L300 2004 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

2.2L VIN F

2.2L VIN F, Automatic A/C Wiring Diagram (1 of 2) for Saturn L300 2004

List of elements for 2.2L VIN F, Automatic A/C Wiring Diagram (1 of 2) for Saturn L300 2004:

• (at right rear corner of engine compt) powertrain control module (pcm)
• (in hvac harness) s205
• +5v
• 5v ref
• A/c
• A/c compressor diode
• A/c fuse 10a
• A/c press
• A/c refrigerant pressure sensor (in a/c high side pressure line)
• A/c relay
• Air tmp ctrl
• Amb air temp
• Amb temp dr
• Ambient air temperature sensor
• Ambient light sensor (at top center of dash)
• B10
• Battery
• Bcm fuse 10a
• Blower motor (on hvac assembly)
• Blower motor speed control module (on front of hvac assembly)
• Blw mtr spd
• Blwr mtr spd
• Body control module (bcm) (mounted to top of glove box)
• C2 c3
• Compressor clutch (at lower left front of engine)
• Computer data lines system
• Coolant fan 1 fuse 30a
• Coolant fan 2 fuse 30a
• Engine coolant temperature (ect) sensor (on thermostat housing)
• G118 (on front of engine block, above starter)
• G305 (under center console)
• Gnd
• Hot at all times
• Hot in run
• Hvac control module (at lower center of dash)
• Ign 3 fuse 10a
• Ign 3 volt
• Low ref
• Low ref
• M11
• Mode actuator (on hvac assembly)
• Mode dr mtr
• Mode dr pos
• N11
• Rec dr cntrl
• Recirculation door actuator (on hvac assembly)
• Red
• Return
• Serial data
• Sig
• Spd req sig
• Sunld sen sig
• Temperature actuator
• Underhood fuse block (left side of engine compt)

2.2L VIN F, Automatic A/C Wiring Diagram (2 of 2) for Saturn L300 2004

List of elements for 2.2L VIN F, Automatic A/C Wiring Diagram (2 of 2) for Saturn L300 2004:

• A12
• Battery
• C11
• C12
• Cool fan low ref
• Cool fan mtr med spd
• Cool fan mtr voltage
• Cooling fan 1 (at front of radiator)
• Cooling fan 2 (at rear of radiator)
• Cooling fan control module (near battery)
• F12
• Fan 1 cntrl
• Fan 2 cntrl
• G105 (at left front corner of engine compt, forward of battery)
• G300 (under center console)
• G304 (at left side of engine compt, near strut tower)
• Ground
• Hi spd cool fan sig
• Hot at all times
• Hot in run
• Ign 3 relay
• Left i/p fuse block (behind left kick panel)
• Low spd cool fan sig
• Powertrain control module (pcm) (at right rear corner of engine compt)
• Red
• Sp103 (at left front corner of engine compt, near battery)
• Sp300
• Underhood fuse block (left side of engine compt)

2.2L VIN F, Compressor Wiring Diagram, with Auto A/C for Saturn L300 2004

List of elements for 2.2L VIN F, Compressor Wiring Diagram, with Auto A/C for Saturn L300 2004:

• +5v
• A/c
• A/c compressor diode
• A/c fuse 10a
• A/c press
• A/c refrigerant pressure sensor (in a/c high side pressure line)
• A/c relay
• B10
• Body control module (bcm) (mounted to top of glove box)
• Compressor clutch (at lower left front of engine)
• Computer data lines system
• G118 (on front of engine block, above starter)
• Hot at all times
• Hot in run
• Ign 3 fuse 10a
• M11
• N11
• Powertrain control module (pcm) (at right rear corner of engine compt)
• Return
• Serial data
• Underhood fuse block (left side of engine compt)

2.2L VIN F, Compressor Wiring Diagram, without Auto A/C for Saturn L300 2004

List of elements for 2.2L VIN F, Compressor Wiring Diagram, without Auto A/C for Saturn L300 2004:

• +5v
• A/c
• A/c diode
• A/c fuse 10a
• A/c on led
• A/c on/off
• A/c press
• A/c refrigerant pressure sensor (in a/c high side pressure line)
• A/c relay
• A/c request
• A/c switch
• B10
• Body control module (bcm) (mounted to top of glove box)
• C11
• C12
• Compressor clutch (at lower left front of engine)
• Computer data lines system
• G118 (on front of engine block, above starter)
• G300 (under center console)
• H12
• Hot at all times
• Hot in run
• Hvac control module (at lower center of dash)
• Hvac fan switch
• Ign 3 fuse 10a
• Ign 3 relay (energized in run)
• K11
• Left i/p fuse block (behind left kick panel)
• M11
• N11
• Off
• Powertrain control module (pcm) (at right rear corner of engine compt)
• Return
• Serial data
• Sp300
• Underhood fuse block (left side of engine compt)

2.2L VIN F, Manual A/C Wiring Diagram (1 of 2) for Saturn L300 2004

List of elements for 2.2L VIN F, Manual A/C Wiring Diagram (1 of 2) for Saturn L300 2004:

• (at right rear corner of engine compt) powertrain control module (pcm)
• (in a/c high side pressure line) a/c refrigerant pressure sensor
• +5v
• A/c compressor clutch (at lower left front of engine)
• A/c diode
• A/c fuse 10a
• A/c led
• A/c on/off input
• A/c press sens
• A/c relay
• A/c relay control
• A/c request input
• A/c request output
• A/c switch
• A1 c2
• B10
• Blower motor (on hvac assembly)
• Blower motor resistor assembly
• Blower switch
• Body control module (bcm) (mounted to top of glove box)
• C11 c1
• C12
• Computer data lines system
• Def
• Def mode input
• Dim illumination
• Engine coolant temperature (ect) sensor (on thermostat housing)
• F1 c1
• Fan 1 ctrl
• Fan 2 ctrl
• Fresh output
• G118 (on front of engine block, above starter)
• G300 (under center console)
• G304 (at left side of engine compt, near strut tower)
• G305 (under center console)
• Gnd
• H11
• H12
• Hot at all times
• Hot in run
• Hvac control module (at lower center of dash)
• Ign
• Ign 3 fuse 10a
• Ign 3 relay
• Interior lights system
• K11
• K12
• Left i/p fuse block (behind left kick panel)
• Low ref
• M11
• Mode actuator (on hvac assembly)
• Mode input
• N11
• Off
• Pnk
• Recirc indicator
• Recirc on input
• Recirc output
• Recirculation door actuator (on hvac assembly)
• Return
• S206 (in hvac harness)
• Serial data
• Sig
• Sp300
• Underhood fuse block (left side of engine compt)
• Vent

2.2L VIN F, Manual A/C Wiring Diagram (2 of 2) for Saturn L300 2004

List of elements for 2.2L VIN F, Manual A/C Wiring Diagram (2 of 2) for Saturn L300 2004:

• A12
• Battery
• Cool fan low ref
• Cool fan mtr med spd
• Cool fan mtr voltage
• Coolant fan 1 fuse 30a
• Coolant fan 2 fuse 30a
• Cooling fan 1 (at front of radiator)
• Cooling fan 2 (at rear of radiator)
• Cooling fan control module (near battery)
• F12
• G105 (at left front corner of engine compt, forward of battery)
• Ground
• Hi spd cool fan sig
• Hot at all times
• Low spd cool fan sig
• Red
• Sp103 (at left front corner of engine compt, near battery)
• Underhood fuse block (left side of engine compt)

3.0L VIN R

3.0L VIN R, Automatic A/C Wiring Diagram (1 of 2) for Saturn L300 2004

List of elements for 3.0L VIN R, Automatic A/C Wiring Diagram (1 of 2) for Saturn L300 2004:

• (in hvac harness) s205
• 5 volt
• 5v ref
• A/c
• A/c compressor diode
• A/c fuse 10a
• A/c press
• A/c refrigerant pressure sensor
• A/c relay
• A10
• Air tmp ctrl
• Amb air temp
• Amb temp dr
• Ambient air temperature sensor
• Ambient light sensor (at top center of dash)
• Battery
• Bcm fuse 10a
• Blower motor (on hvac assembly)
• Blower motor speed control module (on front of hvac assembly)
• Blw mtr spd
• Blwr mtr spd
• Compressor clutch (at lower left front of engine)
• Coolant fan 1 fuse 30a
• Coolant fan 2 fuse 30a
• D10
• Ect sens
• Eng cntl 1 fuse 10a
• Engine control module (ecm) (on top right rear of engine)
• Engine controls system
• Engine coolant temperature (ect) sensor (in lower coolant passage of left cylinder head)
• G118 (at left front corner of engine compt, near battery)
• G305 (under center console)
• Gnd
• Hot at all times
• Hot in run or start
• Hvac control module (at lower center of dash)
• Ign 3 volt
• Low ref
• M11
• Mode actuator (on hvac assembly)
• Mode dr mtr
• Mode dr pos
• N11
• Rec dr cntrl
• Recirculation actuator (on hvac assembly)
• Red
• Sp105 (at rear of engine compt, taped to engine harness)
• Spd req sig
• Sunld sen sig
• Temperature actuator
• Underhood fuse block (left side of engine compt)

3.0L VIN R, Automatic A/C Wiring Diagram (2 of 2) for Saturn L300 2004

List of elements for 3.0L VIN R, Automatic A/C Wiring Diagram (2 of 2) for Saturn L300 2004:

• A12
• Battery
• C11
• C12
• Cool fan low ref
• Cool fan mtr med spd
• Cool fan mtr voltage
• Cooling fan 1 (at front of radiator)
• Cooling fan 2 (at rear of radiator)
• Cooling fan control module (near battery)
• Engine control module (ecm) (on top right rear of engine)
• F12
• Fan 1 cntrl
• Fan 2 cntrl
• G105 (at left front corner of engine compt, forward of battery)
• G300 (under center console)
• G304 (at left side of engine compt, near strut tower)
• Ground
• Hi spd cool fan sig
• Hot at all times
• Hot in run
• Ign 1 voltage
• Ign 3 relay
• Left i/p fuse block (behind left kick panel)
• Low spd cool fan sig
• Red
• Sp103 (at left front corner of engine compt, near battery)
• Sp300
• Underhood fuse block (left side of engine compt)

3.0L VIN R, Compressor Wiring Diagram, with Auto A/C for Saturn L300 2004

List of elements for 3.0L VIN R, Compressor Wiring Diagram, with Auto A/C for Saturn L300 2004:

• +5v
• A/c compressor clutch (at lower left front of engine)
• A/c compressor diode
• A/c fuse 10a
• A/c press
• A/c refrigerant pressure sensor
• A/c relay
• A10
• A12
• B11
• Body control module (bcm) (mounted to top of glove box)
• Can high
• Can low
• D10
• Eng cntl 1 fuse 10a
• Engine control module (ecm) (on top right rear of engine)
• Engine controls system
• G118 (on front of engine block, above starter)
• Hot at all times
• Hot in run or start
• Return
• Tan
• Underhood fuse block (left side of engine compt)

3.0L VIN R, Compressor Wiring Diagram, without Auto A/C for Saturn L300 2004

List of elements for 3.0L VIN R, Compressor Wiring Diagram, without Auto A/C for Saturn L300 2004:

• (left side of engine compt) underhood fuse block
• +5v
• A/c
• A/c comp- ressor diode
• A/c fuse 10a
• A/c on led
• A/c on/off
• A/c press
• A/c refrigerant pressure sensor
• A/c relay
• A/c request
• A/c switch
• A10
• Body control module (bcm) (mounted to top of glove box)
• C11
• C12
• Can high
• Can low
• Compressor clutch (at lower left front of engine)
• Computer data lines system
• D10
• Eng cntl 1 fuse 10a
• Engine control module (ecm) (on top right rear of engine)
• Engine controls system
• G110 (at front left side of transmission)
• G300 (under center console)
• H12
• Hot at all times
• Hot in run or start
• Hvac control module (at lower center of dash)
• Hvac fan switch
• Ign 3 relay (energized in run)
• K11
• Left i/p fuse block (behind left kick panel)
• M11
• N11
• Off
• Return
• Sp300
• Tan

3.0L VIN R, Manual A/C Wiring Diagram (1 of 2) for Saturn L300 2004

List of elements for 3.0L VIN R, Manual A/C Wiring Diagram (1 of 2) for Saturn L300 2004:

• (at rear of engine
• (left side of engine compt) underhood fuse block
• (on top right rear of engine) engine control module (ecm)
• +5v
• A/c compressor clutch (at lower left front of engine)
• A/c diode
• A/c fuse 10a
• A/c led
• A/c on/off input
• A/c press
• A/c refrigerant pressure sensor
• A/c relay
• A/c request input
• A/c request output
• A/c switch
• A1 c2
• A10
• A12
• B11
• Blower motor (on hvac assembly)
• Blower motor resistor assembly
• Blower switch
• Body control module (bcm) (mounted to top of glove box)
• C1 d10
• C11
• C12
• Can high
• Can low
• Compt, taped to engine harness)
• Def
• Def mode input
• Dim illumination
• Ect sensor
• Eng cntl 1 fuse 10a
• Engine controls system
• Engine coolant temperature (ect) sensor (in lower coolant passage of left cylinder head)
• F1 c1
• Fan 1 ctrl
• Fan 2 ctrl
• Fresh output
• G110 (at front left side of transmission)
• G300 (under center console)
• G304 (at left side of engine compt, near strut tower)
• G305 (under center console)
• Gnd
• H11
• H12
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac control module (at lower center of dash)
• Ign
• Ign 3 fuse 10a
• Ign 3 relay
• Interior lights system
• K11
• K12
• Left i/p fuse block (behind left kick panel)
• Low reference
• M11
• Mode actuator (on hvac assembly)
• Mode input
• N11
• Off
• Pnk
• Recirc indicator
• Recirc on input
• Recirc output
• Recirculation actuator (on hvac assembly)
• Return
• S206 (in hvac harness)
• Sp105
• Sp300
• Tan
• Vent

3.0L VIN R, Manual A/C Wiring Diagram (2 of 2) for Saturn L300 2004

List of elements for 3.0L VIN R, Manual A/C Wiring Diagram (2 of 2) for Saturn L300 2004:

• A12
• Battery
• Cool fan 1 fuse 30a
• Cool fan 2 fuse 30a
• Cool fan low ref
• Cool fan mtr med spd
• Cool fan mtr voltage
• Cooling fan 1 (at front of radiator)
• Cooling fan 2 (at rear of radiator)
• Cooling fan control module (near battery)
• F12
• G105 (at left front corner of engine compt, forward of battery)
• Ground
• Hi spd cool fan sig
• Hot at all times
• Low spd cool fan sig
• Red
• Sp103 (at left front corner of engine compt, near battery)
• Underhood fuse block (left side of engine compt)