AIR CONDITIONING – Toyota Sienna XLE 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram, Rear A/C for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, Rear A/C for Toyota Sienna XLE 2003:

• (at front of right inner fender panel) ea
• (at left rear quarterpanel) bm
• (at right rear quarterpanel) bo
• (in dash harness, at right side of dash) i11
• (near left strut tower) ed
• A/c control assembly
• A23
• A24
• A25
• Auto
• Blower motor (rear cooling) (on rear cooling unit)
• Blower motor (rear heater) (on rear heater unit)
• Blower resistor transistor (cooler) (at right rear corner of vehicle)
• Blower resistor transistor (heater) (under right center seat)
• Blwc
• Blwh
• Blwr
• Bmc
• C20
• C21
• D20
• Dome fuse 10a
• Driver side j/b 1 (behind dash, left of steering column)
• Driver side r/b 5 (behind dash, left of steering column)
• Engine room j/b 2 (on left side of engine compartment)
• Front blower heater switch
• Fusible link block (on left side of engine compartment, inside engine room j/b 2)
• Gnd
• Heater fuse 10a
• Hot at all times
• Hot in on or start
• Hrc
• Hrh
• I11 (in dash harness, at right side of dash)
• Ig+
• Illum
• Interior lghts system
• J/b 3 (behind instrument cluster)
• J12
• Junction connector 17 (behind upper right side of dash)
• Junction connector 18 (on underside of steering column)
• Junction connector 23 (forward of right rear fenderwell)
• Junction connector 3 (behind left side of instrument cluster)
• Junction connector 6 (behind top center of dash)
• Junction connector 8 (behind top center of dash)
• Mhc
• Mhh
• Pnk
• R/b 7 (on left front of engine compartment)
• R/b 8 (on right rear of engine compt)
• Ra/c
• Rbat
• Rear a/c switch
• Rear heater intake air temperature sensor (under right center seat)
• Rear heater relay
• Red
• Rhi
• Rlo
• Rmi
• Rr a/c fuse 40a
• Rr clr fuse 40a
• Rr clr relay
• Rrat
• Rrhi
• Rrlo
• Rrme
• Rron
• Servo motor (on rear cooling unit)
• Tinh
• Tph
• Tset
• V10
• Vmc
• Vmh

Automatic A/C Wiring Diagram, with Towing Package (1 of 3) for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, with Towing Package (1 of 3) for Toyota Sienna XLE 2003:

• (at right side of firewall) ij
• (near left strut tower) ed
• A/c control assembly
• A23
• A24
• A25
• Ac1
• Acon
• Aif
• Air
• Air inlet control servo motor (behind upper right side of dash)
• Air vent mode control servo motor (behind left center of dash)
• Alt fuse 140a
• Auto
• B/l
• Blower motor (behind right side of dash)
• Blw
• Blwc
• Blwh
• C20
• D20
• D21
• Def
• Defogger system
• Driver side j/b 1 (behind dash, left of steering column)
• Face
• Fdef
• Foot
• Front blower motor controller
• Front heater blower switch
• Front heater relay
• Fusible link block (on left side of engine compartment, inside engine room j/b 2)
• Gnd
• Heater fuse 10a
• Hot at all times
• Hot in on or start
• Hrc
• Hrh
• Htr fuse 50a
• I2 (in dash harness, at right side of dash)
• Ig+
• Illum
• Instrument cluster system
• Interior lights system
• J/b 3 (behind instrument cluster)
• Junction connector 17 (behind upper right side of dash)
• Junction connector 2 (behind left side of instrument cluster)
• Junction connector 8 (behind top center of dash)
• Lock
• Mfrs
• Mhc
• Mhh
• Mrs
• Passenger side r/b 4 (at right kick panel)
• Pnk
• Psw
• Rbat
• Rear a/c circuit
• Red
• Rrat
• Rrhi
• Rrlo
• Rrme
• Rron
• Spd
• Taco
• Tam
• Tinh
• Tpd
• Tph
• Tpi
• Tset
• Vmc
• Vmh

Automatic A/C Wiring Diagram, with Towing Package (2 of 3) for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, with Towing Package (2 of 3) for Toyota Sienna XLE 2003:

• (behind top center of dash) junction connector 7
• A/c
• A/c ambient temperature sensor (on right front of engine compartment)
• A/c magnetic clutch & lock sensor (on left front of engine)
• A/c room temperature sensor (on left center of dash)
• A/c solar sensor (on upper left side of dash)
• A/c thermistor (behind lower right side of dash)
• A/c triple pressure switch (dual & single) (on right front of engine compt)
• Acmg
• Air mix control servo motor (behind center of dash)
• Dome fuse 10a
• Driver side j/b 1 (behind dash, left of steering column)
• Dual
• Engine control module (behind right side of dash)
• Engine room j/b 2 (on left side of engine compt)
• Hot at all times
• I11 (in dash harness, at right side of dash)
• J12
• Junction connector 17 (behind upper right side of dash)
• Junction connector 18 (on underside of steering column)
• Junction connector 6 (behind top center of dash)
• Mg clt relay
• Pnk
• R/b 8 (on right rear of engine compartment)
• Rear a/c evaporator temperature sensor (on center of roof)
• Red
• Single
• Tach
• Thwo
• V10

Automatic A/C Wiring Diagram, with Towing Package (3 of 3) for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, with Towing Package (3 of 3) for Toyota Sienna XLE 2003:

• (at front of left inner fender panel) ee
• (at front of right inner fender panel) ea
• (at rear of intake manifold)
• (at right side of intake manifold)
• A/c condenser fan motor (on right front of engine compartment)
• Cds fuse 30a
• Diode (a/c magnetic clutch) (on right rear of engine compartment)
• E3 (in engine harness, behind left headlight)
• Engine room j/b 2 (on left side of engine compartment)
• Engine room r/b 1 (on left side of engine compartment)
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• I12 (in dash harness, at right side of dash)
• J13
• Junction connector 14 (behind lower right side of dash)
• Junction connector 8 (behind top center of dash)
• Main 1 relay
• Main 2 relay
• Pnk
• Radiator fan motor (on left front of engine compartment)
• Rdi fuse 30a
• Red
• Short pin
• Water temperature switch 1 (on right front of engine compartment)
• Water temperature switch 2 (on rear of engine)

Automatic A/C Wiring Diagram, without Towing Package (1 of 3) for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, without Towing Package (1 of 3) for Toyota Sienna XLE 2003:

• (at right side of firewall) ij
• (near left strut tower) ed
• A/c control assembly
• A23
• A24
• A25
• Ac1
• Acon
• Aif
• Air
• Air inlet control servo motor (behind upper right side of dash)
• Air vent mode control servo motor (behind left center of dash)
• Alt fuse 140a
• Auto
• B/l
• Blower motor (behind right side of dash)
• Blw
• Blwc
• Blwh
• C20
• D20
• D21
• Def
• Defogger system
• Driver side j/b 1 (behind dash, left of steering column)
• Face
• Fdef
• Foot
• Front blower motor controller
• Front heater blower switch
• Front heater relay
• Fusible link block (on left side of engine compartment, inside engine room j/b 2)
• Gnd
• Heater fuse 10a
• Hot at all times
• Hot in on or start
• Hrc
• Hrh
• Htr fuse 50a
• I2 (in dash harness, at right side of dash)
• Ig+
• Illum
• Instrument cluster system
• Interior lights system
• J/b 3 (behind instrument cluster)
• Junction connector 17 (behind upper right side of dash)
• Junction connector 2 (behind left side of instrument cluster)
• Junction connector 8 (behind top center of dash)
• Lock
• Mfrs
• Mhc
• Mhh
• Mrs
• Passenger side r/b 4 (at right kick panel)
• Pnk
• Psw
• Rbat
• Rear a/c circuit
• Red
• Rrat
• Rrhi
• Rrlo
• Rrme
• Rron
• Spd
• Taco
• Tam
• Tinh
• Tpd
• Tph
• Tpi
• Tset
• Vmc
• Vmh

Automatic A/C Wiring Diagram, without Towing Package (2 of 3) for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, without Towing Package (2 of 3) for Toyota Sienna XLE 2003:

• (behind top center of dash) junction connector 7
• A/c
• A/c ambient temperature sensor (on right front of engine compartment)
• A/c magnetic clutch & lock sensor (on left front of engine)
• A/c room temperature sensor (on left center of dash)
• A/c solar sensor (on upper left side of dash)
• A/c thermistor (behind lower right side of dash)
• A/c triple pressure switch (dual & single) (on right front of engine compt)
• Acmg
• Air mix control servo motor (behind center of dash)
• Dome fuse 10a
• Driver side j/b 1 (behind dash, left of steering column)
• Dual
• Engine control module (behind right side of dash)
• Engine room j/b 2 (on left side of engine compt)
• Hot at all times
• I11 (in dash harness, at right side of dash)
• J12
• Junction connector 17 (behind upper right side of dash)
• Junction connector 18 (on underside of steering column)
• Junction connector 6 (behind top center of dash)
• Mg clt relay
• R/b 8 (on right rear of engine compartment)
• Rear a/c evaporator temperature sensor (on center of roof)
• Red
• Single
• Tach
• Thwo
• V10

Automatic A/C Wiring Diagram, without Towing Package (3 of 3) for Toyota Sienna XLE 2003

List of elements for Automatic A/C Wiring Diagram, without Towing Package (3 of 3) for Toyota Sienna XLE 2003:

• (at front of left inner fender panel) ee
• (at front of right inner fender panel) ea
• (at rear of intake manifold)
• (at right side of intake manifold)
• A/c condenser fan motor (on right front of engine compartment)
• Cds fuse 30a
• Diode (a/c magnetic clutch) (on right rear of engine compartment)
• Engine room j/b 2 (on left side of engine compartment)
• Engine room r/b 1 (on left side of engine compartment)
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• J13
• Junction connector 14 (behind lower right side of dash)
• Junction connector 8 (behind top center of dash)
• Main 1 relay
• Radiator fan motor (on left front of engine compartment)
• Rdi fuse 30a
• Red
• Water temperature switch 1 (on right front of engine compartment)
• Water temperature switch 2 (on rear of engine)

Manual A/C Wiring Diagram, Rear A/C (1 of 2) for Toyota Sienna XLE 2003

List of elements for Manual A/C Wiring Diagram, Rear A/C (1 of 2) for Toyota Sienna XLE 2003:

• (at right side of firewall) ij
• (behind instrument cluster) j/b 3
• (near left strut tower) ed
• (under left "b" pillar) bk
• A/c amplifier (behind right side of dash, above kick panel)
• A/c fuse 5a
• A/c switch
• A/mp
• Ac1
• Act
• Blower motor (on rear cooling unit)
• Blower resistor (on rear cooling unit)
• Blower switch
• C20
• Cool
• D21
• Driver side j/b 1 (behind dash, left of steering column)
• Driver side r/b 5 (behind dash, left side of steering column)
• Engine room j/b 2 (on left side of engine compartment)
• F-a/c
• F-te
• Fan
• Front a/c circuit
• Front heater relay
• Fusible link block (on left side of engine compartment, inside engine room j/b 2)
• Gnd
• Heater fuse 10a
• Hot
• Hot at all times
• Hot in on or start
• Htr fuse 50a
• Ign
• Illum
• Interior lights system
• Junction connector 2 & 3 (behind left side of instrument cluster)
• Junction connector 8 (behind top center of dash)
• Led
• Lock
• Mcool
• Mgc
• Mhot
• Mode switch
• Off
• Passenger side r/b 4 (at right kick panel)
• Prs
• R-hvr
• Rr a/c fuse 40a
• Servo motor (under center of center seat)
• Sg1
• Sg2
• Volume switch

Manual A/C Wiring Diagram, Rear A/C (2 of 2) for Toyota Sienna XLE 2003

List of elements for Manual A/C Wiring Diagram, Rear A/C (2 of 2) for Toyota Sienna XLE 2003:

• (at left rear quarterpanel) bm
• (at right side of firewall) ij
• (in body harness, at left "b" pillar) b3
• (in body harness, at right rear quarterpanel) b13
• (in body harness, at right side of tailgate) b12
• (in body harness, in roof above left sliding door)
• (in body harness, in roof above left sliding door) b2
• (in dash harness, at left side of dash) i5
• (near left strut tower) ed
• B13 (in body harness, at right rear quarterpanel)
• Driver side r/b 5 (behind dash, left of steering column)
• Front heater blower switch
• Illum
• Interior lights system
• Junction connector 3 (behind left side of instrument cluster)
• Off
• Passenger side r/b 3 (on right rear corner of vehicle)
• Rear
• Rear cooling blower motor (on rear cooling unit)
• Rear cooling blower resistor (on rear cooling unit)
• Rear heater blower motor (on rear heater unit)
• Rear heater blower resistor (on rear heater unit)
• Rear heater blower switch
• Rear heater relay
• Rear hi relay (on right rear of vehicle)
• Rear lo relay
• Rear m1 relay
• Rear m2 relay
• Rear relay

Manual A/C Wiring Diagram, with Towing Package (1 of 2) for Toyota Sienna XLE 2003

List of elements for Manual A/C Wiring Diagram, with Towing Package (1 of 2) for Toyota Sienna XLE 2003:

• (at right side of firewall) ij
• A/c
• A/c amplifier (behind right side of dash, above kick panel)
• A/c fuse 5a
• A/c magnetic clutch & lock sensor (on left front of engine)
• A/c switch
• A/c thermistor (behind lower right side of dash)
• A/c triple pressure switch (dual & single) (on right front of engine compt)
• Ac1
• Acmg
• Act
• Air inlet control servo motor (behind upper right side of dash)
• Air inlet control switch (rear window defogger switch)
• Alt fuse 140a
• Blower motor (behind right side of dash)
• Blower resistor (behind right side of dash, on blower housing)
• Blower switch
• C20
• D20
• D21
• Driver side j/b 1 (behind dash, left of steering column)
• Driver side r/b 5 (behind dash, left of steering column)
• Dual
• Engine control module (behind right side of dash)
• F-a/c
• F-te
• Fan
• Front heater relay
• Fusible link block (on left side of engine compartment, inside engine room j/b 2)
• Gnd
• Heater fuse 10a
• Hot at all times
• Hot in on or start
• Htr fuse 50a
• Ign
• Illum
• Interior lights system
• J/b 3 (behind instrument cluster)
• Junction connector 17 (behind upper right side of dash)
• Junction connector 2 & 3 (behind left side of instrument cluster)
• Junction connector 7 (behind top center of dash)
• Junction connector 8 (behind top center of dash)
• Led
• Lock
• Mgc
• Mode switch
• Off
• Passenger side r/b 4 (at right kick panel)
• Pnk
• Prs
• Sg1
• Single
• Tach

Manual A/C Wiring Diagram, with Towing Package (2 of 2) for Toyota Sienna XLE 2003

List of elements for Manual A/C Wiring Diagram, with Towing Package (2 of 2) for Toyota Sienna XLE 2003:

• (at front of left inner fender panel) ee
• (at front of right inner fender panel) ea
• (at rear of intake manifold)
• (at right side of intake manifold)
• (near left strut tower) ed
• A/c condenser fan motor (on right front of engine compartment)
• Cds fuse 40a
• E3 (in engine harness, behind left headlight)
• Engine room j/b 2 (on left side of engine compartment)
• Engine room r/b 1 (on left side of engine compartment)
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• I12 (in dash harness, at right side of dash)
• J13
• Junction connector 14 (behind lower right side of dash)
• Junction connector 2 & 3 (behind left side of instrument cluster)
• Main 1 relay
• Main 2 relay
• Pnk
• Radiator fan motor (on left front of engine compartment)
• Rdi fuse 40a
• Red
• Short pin
• Water temperature switch 1 (on right front of engine compartment)
• Water temperature switch 2 (on rear of engine)

Manual A/C Wiring Diagram, without Towing Package (1 of 2) for Toyota Sienna XLE 2003

List of elements for Manual A/C Wiring Diagram, without Towing Package (1 of 2) for Toyota Sienna XLE 2003:

• (at right side of firewall) ij
• A/c
• A/c amplifier (behind right side of dash, above kick panel)
• A/c fuse 5a
• A/c magnetic clutch & lock sensor (on left front of engine)
• A/c switch
• A/c thermistor (behind lower right side of dash)
• A/c triple pressure switch (dual & single) (on right front of engine compt)
• Ac1
• Acmg
• Act
• Air inlet control servo motor (behind upper right side of dash)
• Air inlet control switch (rear window defogger switch)
• Alt fuse 140a
• Blower motor (behind right side of dash)
• Blower resistor (behind right side of dash, on blower housing)
• Blower switch
• C20
• D20
• D21
• Driver side j/b 1 (behind dash, left of steering column)
• Driver side r/b 5 (behind dash, left of steering column)
• Dual
• Engine control module (behind right side of dash)
• F-a/c
• F-te
• Fan
• Front heater relay
• Fusible link block (on left side of engine compartment, inside engine room j/b 2)
• Gnd
• Heater fuse 10a
• Hot at all times
• Hot in on or start
• Htr fuse 50a
• Ign
• Illum
• Interior lights system
• J/b 3 (behind instrument cluster)
• Junction connector 17 (behind upper right side of dash)
• Junction connector 2 & 3 (behind left side of instrument cluster)
• Junction connector 7 (behind top center of dash)
• Junction connector 8 (behind top center of dash)
• Led
• Lock
• Mgc
• Mode switch
• Off
• Passenger side r/b 4 (at right kick panel)
• Prs
• Sg1
• Single
• Tach

Manual A/C Wiring Diagram, without Towing Package (2 of 2) for Toyota Sienna XLE 2003

List of elements for Manual A/C Wiring Diagram, without Towing Package (2 of 2) for Toyota Sienna XLE 2003:

• (at front of left inner fender panel) ee
• (at front of right inner fender panel) ea
• (at rear of intake manifold)
• (at right side of intake manifold)
• (near left strut tower) ed
• A/c condenser fan motor (on right front of engine compartment)
• Cds fuse 30a
• Engine room j/b 2 (on left side of engine compartment)
• Engine room r/b 1 (on left side of engine compt)
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• J13
• Junction connector 14 (behind lower right side of dash)
• Junction connector 2 & 3 (behind left side of instrument cluster)
• Main 1 relay
• Radiator fan motor (on left front of engine compartment)
• Rdi fuse 30a
• Red
• Water temperature switch 1 (on right front of engine compartment)
• Water temperature switch 2 (on rear of engine)