AIR CONDITIONING – Toyota Highlander 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

2.4L

2.4L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander 2003

List of elements for 2.4L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander 2003:

• (in dash harness, at center of dash)
• (in dash harness, at center of dash) i5
• (in dash harness, at right side of dash)
• A/c control assembly (behind center of dash)
• A10
• A11
• A13
• Acc
• Aif
• Air
• Air inlet control servo motor (behind upper center of dash)
• Air mix control servo motor (behind center of dash)
• Air vent mode control servo motor (behind left center of dash)
• Amc
• Amh
• Aod
• Aof
• Blower control switch
• Blower motor (behind right side of dash)
• Blower resistor (behind right side of dash)
• Center j/b (behind upper center of dash)
• Clk
• Control panel
• Dpd
• Ecu-b fuse 7.5a
• Engine room j/b (on left side of engine compartment)
• Evaporator temperature sensor (behind right side of dash)
• F13
• Fusible link block (on left side of engine compartment)
• G10
• Gnd
• Haz
• Heater fuse 15a
• Heater fuse 50a
• Heater relay (right of instrument panel j/b)
• Hot at all times
• Hot in on or acc
• Hot in on or start
• I10
• I11
• Ia (at left kick panel)
• Ib (at right dash brace)
• Ic (at right kick panel)
• Ill+
• Ill-
• Instrument panel j/b (behind left side of dash)
• Interior lights system
• J10
• Junction connector 5 (left side of dash, behind instrument cluster)
• K13
• Mpx+
• Mpx-
• Mr/f
• Passenger side j/b (behind right side of dash)
• Pnk
• Radio 2 fuse 7.5a
• Red
• S5-1
• Sg-1
• Stx
• Swd
• Test
• Tpo

2.4L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander 2003

List of elements for 2.4L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander 2003:

• (in engine compt harness, at left front of engine compt)
• (on left rear of engine) engine coolant temperature sensor
• (under left headlight) eg
• A/c magnetic clutch & lock sensor (on a/c comp- ressor)
• A/c triple pressure switch (on right front of engine compartment)
• Acmg
• B10
• Body ecu (behind right side of dash)
• C11
• C12
• Cds fuse 30a
• Combination meter
• Condenser fan motor (behind radiator)
• Dual
• Eb (at right front fender apron)
• Ee (at intake side of cylinder block)
• Engine control module (behind right side of dash)
• Engine room j/b (on left side of engine compartment)
• Engine room r/b (on left side of engine compartment)
• Fan
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• Fusible link block (on left side of engine compartment)
• Hot at all times
• Junction connector 4 (on right side of engine compartment)
• Junction connector 7 (behind right side of dash)
• Lck1
• Mg clt relay
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• Passenger side j/b (behind right side of dash)
• Power window master switch with ecu
• Pr2
• Pre
• Radiator fan motor (behind radiator)
• Rdi fuse 30a
• Single
• Thw

3.0L

3.0L, Automatic A/C Wiring Diagram (1 of 2) for Toyota Highlander 2003

List of elements for 3.0L, Automatic A/C Wiring Diagram (1 of 2) for Toyota Highlander 2003:

• (in dash harness, at center of dash)
• (in dash harness, at right side of dash) i9
• A/c ambient temperature sensor (on front center of grille)
• A/c control assembly (behind center of dash)
• A/c solar sensor (on upper left side of dash)
• A10
• A11
• A13
• Acc
• Aif
• Air
• Air inlet control servo motor (behind upper center of dash)
• Air mix control servo motor (behind center of dash)
• Air vent mode control servo motor (behind left center of dash)
• Amc
• Amh
• Aod
• Aof
• Blower motor (behind right side of dash)
• Blower motor controller
• Blw
• Center j/b (behind upper center of dash)
• Clk
• Control panel
• Dpd
• Ecu-b fuse 7.5a
• Engine room j/b (on left side of engine compartment)
• Evaporator temperature sensor (behind right side of dash)
• F13
• Fusible link block (on left side of engine compartment)
• G10
• Gnd
• Haz
• Heater fuse 15a
• Heater fuse 50a
• Heater relay (right of instrument panel j/b)
• Hot at all times
• Hot in on or acc
• Hot in on or start
• I11
• Ia (at left kick panel)
• Ib (at right dash brace)
• Ic (at right kick panel)
• Ig+
• Ill+
• Ill-
• Instrument panel j/b (behind left side of dash)
• Interior lights system
• Junction connector 5 (left side of dash, behind instrument cluster)
• K13
• Mpx+
• Mpx-
• Mr/f
• Passenger side j/b (behind right side of dash)
• Pnk
• Radio 2 fuse 7.5a
• Red
• Room temperature sensor (behind center of dash)
• S5-1
• S5-3
• Sg-1
• Sg-3
• Sg-5
• Stx
• Swd
• Tam
• Tpo

3.0L, Automatic A/C Wiring Diagram (2 of 2) for Toyota Highlander 2003

List of elements for 3.0L, Automatic A/C Wiring Diagram (2 of 2) for Toyota Highlander 2003:

• (in engine compt harness, at left front of engine compt)
• A/c magnetic clutch & lock sensor (on a/c comp- ressor)
• A/c triple pressure switch (on right front of engine compt)
• Acmg
• B10
• Body ecu (behind right side of dash)
• C11
• C12
• Cds fuse 30a
• Combination meter
• Condenser fan motor (behind radiator)
• Cooling fan diode (behind left side of dash)
• Dual
• E2 (in engine compt harness, at left front of engine compt)
• E5 (in engine compt harness, at left side of engine compt)
• Eb (at right front fender apron)
• Ed (at rear side of surge tank)
• Eg (under left headlight)
• Eh (under left headlight)
• Engine control module (behind right side of dash)
• Engine room j/b (on left side of engine compartment)
• Engine room r/b (on left side of engine compartment)
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• Fusible link block (on left side of engine compartment)
• Hot at all times
• Junction connector 2 (behind left headlight)
• Junction connector 4 (on right side of engine compartment)
• Junction connector 7 (behind right side of dash)
• Lck1
• Mg clt relay
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• Passenger side j/b (behind right side of dash)
• Power window master switch with ecu
• Pre
• Radiator fan motor (behind radiator)
• Rdi fuse 30a
• Single
• Water temperature switch 1 (at right front of engine compartment, behind grille)
• Water temperature switch 2 (on rear center of engine)

3.0L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander 2003

List of elements for 3.0L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander 2003:

• (in dash harness, at center of dash)
• (in dash harness, at center of dash) i5
• (in dash harness, at right side of dash)
• A/c control assembly (behind center of dash)
• A10
• A11
• A13
• Acc
• Aif
• Air
• Air inlet control servo motor (behind upper center of dash)
• Air mix control servo motor (behind center of dash)
• Air vent mode control servo motor (behind left center of dash)
• Amc
• Amh
• Aod
• Aof
• Blower control switch
• Blower motor (behind right side of dash)
• Blower resistor (behind right side of dash)
• Center j/b (behind upper center of dash)
• Clk
• Control panel
• Dpd
• Ecu-b fuse 7.5a
• Engine room j/b (on left side of engine compartment)
• Evaporator temperature sensor (behind right side of dash)
• F13
• Fusible link block (on left side of engine compartment)
• G10
• Gnd
• Haz
• Heater fuse 15a
• Heater fuse 50a
• Heater relay (right of instrument panel j/b)
• Hot at all times
• Hot in on or acc
• Hot in on or start
• I10
• I11
• Ia (at left kick panel)
• Ib (at right dash brace)
• Ic (at right kick panel)
• Ill+
• Ill-
• Instrument panel j/b (behind left side of dash)
• Interior lights system
• J10
• Junction connector 5 (left side of dash, behind instrument cluster)
• K13
• Mpx+
• Mpx-
• Mr/f
• Passenger side j/b (behind right side of dash)
• Pnk
• Radio 2 fuse 7.5a
• Red
• S5-1
• Sg-1
• Stx
• Swd
• Test
• Tpo

3.0L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander 2003

List of elements for 3.0L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander 2003:

• (in engine compt harness, at left front of engine compt)
• A/c magnetic clutch & lock sensor (on a/c comp- ressor)
• A/c triple pressure switch (on right front of engine compartment)
• Acmg
• B10
• Body ecu (behind right side of dash)
• C11
• C12
• Cds fuse 30a
• Combination meter
• Condenser fan motor (behind radiator)
• Cooling fan diode (behind left side of dash)
• Dual
• E5 (in engine compt harness, at left side of engine compt)
• Ed (at rear side of surge tank)
• Eg (under left headlight)
• Eh (under left headlight)
• Engine control module (behind right side of dash)
• Engine room j/b (on left side of engine compartment)
• Engine room r/b (on left side of engine compartment)
• Fan 1 relay
• Fan 2 relay
• Fan 3 relay
• Fusible link block (on left side of engine compartment)
• Hot at all times
• Junction connector 2 (behind left headlight)
• Junction connector 4 (on right side of engine compartment)
• Junction connector 7 (behind right side of dash)
• Lck1
• Mg clt relay
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• Passenger side j/b (behind right side of dash)
• Power window master switch with ecu
• Pre
• Radiator fan motor (behind radiator)
• Rdi fuse 30a
• Single
• Water temperature switch 1 (at right front of engine compartment, behind grille)
• Water temperature switch 2 (on rear center of engine)